Merge pull request #9467 from gpnaveen/bgp_v4overv6

tests: adding 11 bgp v4 over v6 test cases.
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Russ White 2021-08-25 17:14:10 -04:00 committed by GitHub
commit ddcd8ec538
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 4090 additions and 0 deletions

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{
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24, "ipv6": "fd00::", "v6mask": 64},
"lo_prefix": {"ipv4": "1.0.", "v4mask": 32, "ipv6": "2001:DB8:F::", "v6mask": 128},
"routers": {
"r0": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link1": {"ipv4": "auto", "ipv6": "auto"},
"r1-link2": {"ipv4": "auto", "ipv6": "auto"},
"r1-link3": {"ipv4": "auto", "ipv6": "auto"},
"r1-link4": {"ipv4": "auto", "ipv6": "auto"},
"r1-link5": {"ipv4": "auto", "ipv6": "auto"}}
},
"r1": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r0-link1": {"ipv4": "auto", "ipv6": "auto"},
"r0-link2": {"ipv4": "auto", "ipv6": "auto"},
"r0-link3": {"ipv4": "auto", "ipv6": "auto"},
"r0-link4": {"ipv4": "auto", "ipv6": "auto"},
"r0-link5": {"ipv4": "auto", "ipv6": "auto"},
"r2-link0": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"activate": "ipv4",
"capability": "extended-nexthop"
}
}
}
}
}
}
}}},
"r2": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link0": {"ipv4": "auto", "ipv6": "auto"},
"r3": {"ipv4": "auto", "ipv6": "auto"},
"r4": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "200",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"activate": "ipv4",
"capability": "extended-nexthop"
}
}
},
"r3": {"dest_link": {"r2": {}}}}
}
}
}}},
"r3": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "200",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}}},
"r4": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}}
}}}

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{
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24, "ipv6": "fd00::", "v6mask": 64},
"lo_prefix": {"ipv4": "1.0.", "v4mask": 32, "ipv6": "2001:DB8:F::", "v6mask": 128},
"routers": {
"r0": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link1": {"ipv4": "auto", "ipv6": "auto"},
"r1-link2": {"ipv4": "auto", "ipv6": "auto"},
"r1-link3": {"ipv4": "auto", "ipv6": "auto"},
"r1-link4": {"ipv4": "auto", "ipv6": "auto"},
"r1-link5": {"ipv4": "auto", "ipv6": "auto"}}
},
"r1": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r0-link1": {"ipv4": "auto", "ipv6": "auto"},
"r0-link2": {"ipv4": "auto", "ipv6": "auto"},
"r0-link3": {"ipv4": "auto", "ipv6": "auto"},
"r0-link4": {"ipv4": "auto", "ipv6": "auto"},
"r0-link5": {"ipv4": "auto", "ipv6": "auto"},
"r2-link0": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
}
}
}
}
}}},
"r2": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link0": {"ipv4": "auto", "ipv6": "auto"},
"r3": {"ipv4": "auto", "ipv6": "auto"},
"r4": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "200",
"default_ipv4_unicast": "False",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r4": {"dest_link": {"r2": {"activate": "ipv4"}}}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
},
"r3": {"dest_link": {"r2": {}}}}
}
}}}},
"r3": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "300",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}}},
"r4": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "400",
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r4": {}}}}}}
}}}}}

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{
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24, "ipv6": "fd00::", "v6mask": 64},
"lo_prefix": {"ipv4": "1.0.", "v4mask": 32, "ipv6": "2001:DB8:F::", "v6mask": 128},
"routers": {
"r0": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link1": {"ipv4": "auto", "ipv6": "auto"},
"r1-link2": {"ipv4": "auto", "ipv6": "auto"},
"r1-link3": {"ipv4": "auto", "ipv6": "auto"},
"r1-link4": {"ipv4": "auto", "ipv6": "auto"},
"r1-link5": {"ipv4": "auto", "ipv6": "auto"}}
},
"r1": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r0-link1": {"ipv4": "auto", "ipv6": "auto"},
"r0-link2": {"ipv4": "auto", "ipv6": "auto"},
"r0-link3": {"ipv4": "auto", "ipv6": "auto"},
"r0-link4": {"ipv4": "auto", "ipv6": "auto"},
"r0-link5": {"ipv4": "auto", "ipv6": "auto"},
"r2-link0": {"ipv4": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"activate": "ipv4",
"capability": "extended-nexthop",
"neighbor_type": "unnumbered"
}
}
}
}
}
}
}}},
"r2": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link0": {"ipv4": "auto"},
"r3": {"ipv4": "auto", "ipv6": "auto"},
"r4": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "200",
"default_ipv4_unicast": "False",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r4": {"dest_link": {"r2": {"activate": "ipv4"}}}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"activate": "ipv4",
"capability": "extended-nexthop",
"neighbor_type": "unnumbered"
}
}
},
"r3": {"dest_link": {"r2": {}}}}
}
}}}},
"r3": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "300",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}}},
"r4": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "400",
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r4": {}}}}}}
}}}}}

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{
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24, "ipv6": "fd00::", "v6mask": 64},
"lo_prefix": {"ipv4": "1.0.", "v4mask": 32, "ipv6": "2001:DB8:F::", "v6mask": 128},
"routers": {
"r0": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link1": {"ipv4": "auto", "ipv6": "auto"},
"r1-link2": {"ipv4": "auto", "ipv6": "auto"},
"r1-link3": {"ipv4": "auto", "ipv6": "auto"},
"r1-link4": {"ipv4": "auto", "ipv6": "auto"},
"r1-link5": {"ipv4": "auto", "ipv6": "auto"}}
},
"r1": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r0-link1": {"ipv4": "auto", "ipv6": "auto"},
"r0-link2": {"ipv4": "auto", "ipv6": "auto"},
"r0-link3": {"ipv4": "auto", "ipv6": "auto"},
"r0-link4": {"ipv4": "auto", "ipv6": "auto"},
"r0-link5": {"ipv4": "auto", "ipv6": "auto"},
"r2-link0": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
}
}
}
}
}}},
"r2": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link0": {"ipv4": "auto", "ipv6": "auto"},
"r3": {"ipv4": "auto", "ipv6": "auto"},
"r4": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r4": {"dest_link": {"r2": {"activate": "ipv4"}}}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
},
"r3": {"dest_link": {"r2": {}}}}
}
}}}},
"r3": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "300",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}}},
"r4": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "400",
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r4": {}}}}}}
}}}}}

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{
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {"ipv4": "10.0.0.0", "v4mask": 24, "ipv6": "fd00::", "v6mask": 64},
"lo_prefix": {"ipv4": "1.0.", "v4mask": 32, "ipv6": "2001:DB8:F::", "v6mask": 128},
"routers": {
"r0": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link1": {"ipv4": "auto"},
"r1-link2": {"ipv4": "auto"},
"r1-link3": {"ipv4": "auto"},
"r1-link4": {"ipv4": "auto"},
"r1-link5": {"ipv4": "auto"}}
},
"r1": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r0-link1": {"ipv4": "auto"},
"r0-link2": {"ipv4": "auto"},
"r0-link3": {"ipv4": "auto"},
"r0-link4": {"ipv4": "auto"},
"r0-link5": {"ipv4": "auto"},
"r2-link0": {"ipv4": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"neighbor_type": "unnumbered",
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
}
}
}
}
}}},
"r2": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r1-link0": {"ipv4": "auto"},
"r3": {"ipv4": "auto", "ipv6": "auto"},
"r4": {"ipv4": "auto"}},
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "False",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r4": {"dest_link": {"r2": {"activate": "ipv4"}}}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"neighbor_type": "unnumbered",
"capability": "extended-nexthop",
"activate": "ipv4"
}
}
},
"r3": {"dest_link": {"r2": {}}}}
}
}}}},
"r3": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto", "ipv6": "auto"}},
"bgp": {
"local_as": "300",
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}}},
"r4": {
"links": {
"lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"},
"r2": {"ipv4": "auto"}},
"bgp": {
"local_as": "400",
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r4": {}}}}}}
}}}}}

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#!/usr/bin/env python
#
# Copyright (c) 2021 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation, Inc.
# ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""RFC5549 Automation."""
import os
import sys
import time
import json
import pytest
from copy import deepcopy
import ipaddr
from re import search as re_search
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
sys.path.append(os.path.join(CWD, "../../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib.topogen import Topogen, get_topogen
from mininet.topo import Topo
from lib.common_config import (
start_topology,
write_test_header,
get_frr_ipv6_linklocal,
write_test_footer,
create_prefix_lists,
verify_rib,
create_static_routes,
check_address_types,
reset_config_on_routers,
step,
create_route_maps,
create_interfaces_cfg,
)
from lib.topolog import logger
from lib.bgp import (
clear_bgp_and_verify,
verify_bgp_convergence,
create_router_bgp,
verify_bgp_rib,
)
from lib.topojson import build_topo_from_json, build_config_from_json
# Global variables
topo = None
# Reading the data from JSON File for topology creation
jsonFile = "{}/rfc5549_ebgp_ibgp_nbr.json".format(CWD)
try:
with open(jsonFile, "r") as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
# Global variables
NETWORK = {
"ipv4": [
"11.0.20.1/32",
"11.0.20.2/32",
"11.0.20.3/32",
"11.0.20.4/32",
"11.0.20.5/32",
],
"ipv6": ["1::1/128", "1::2/128", "1::3/128", "1::4/128", "1::5/128"],
}
MASK = {"ipv4": "32", "ipv6": "128"}
NEXT_HOP = {
"ipv4": ["10.0.0.1", "10.0.1.1", "10.0.2.1", "10.0.3.1", "10.0.4.1"],
"ipv6": ["Null0", "Null0", "Null0", "Null0", "Null0"],
}
NO_OF_RTES = 2
NETWORK_CMD_IP = "1.0.1.17/32"
ADDR_TYPES = check_address_types()
TOPOOLOGY = """
Please view in a fixed-width font such as Courier.
+----+
| R4 |
| |
+--+-+
| ipv4 nbr
no bgp ebgp/ibgp |
| ebgp/ibgp
+----+ 5links +----+ 8links +--+-+ +----+
|R0 +----------+ R1 +------------+ R2 | ipv6 nbr |R3 |
| +----------+ +------------+ +-------------+ |
+----+ +----+ ipv6 nbr +----+ +----+
"""
TESTCASES = """
1. Verify Ipv4 route next hop is changed when advertised using
next hop -self command
2. Verify IPv4 route advertised to peer when IPv6 BGP session established
using peer-group
3. Verify IPv4 routes received with IPv6 nexthop are getting advertised
to another IBGP peer without changing the nexthop
4. Verify IPv4 routes advertised with correct nexthop when nexthop
unchange is configure on EBGP peers
"""
class CreateTopo(Topo):
"""
Test topology builder.
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function."""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""Set up the pytest environment."""
global topo
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(CreateTopo, mod.__name__)
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
BGP_CONVERGENCE
)
logger.info("Running setup_module() done")
def teardown_module():
"""
Teardown the pytest environment.
* `mod`: module name
"""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
tgen.stop_topology()
def get_llip(onrouter, intf):
"""
API to get the link local ipv6 address of a perticular interface
Parameters
----------
* `fromnode`: Source node
* `tonode` : interface for which link local ip needs to be returned.
Usage
-----
result = get_llip('r1', 'r2-link0')
Returns
-------
1) link local ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
tgen = get_topogen()
intf = topo["routers"][onrouter]["links"][intf]["interface"]
llip = get_frr_ipv6_linklocal(tgen, onrouter, intf)
if llip:
logger.info("llip ipv6 address to be set as NH is %s", llip)
return llip
return None
def get_glipv6(onrouter, intf):
"""
API to get the global ipv6 address of a perticular interface
Parameters
----------
* `onrouter`: Source node
* `intf` : interface for which link local ip needs to be returned.
Usage
-----
result = get_glipv6('r1', 'r2-link0')
Returns
-------
1) global ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
glipv6 = (topo["routers"][onrouter]["links"][intf]["ipv6"]).split("/")[0]
if glipv6:
logger.info("Global ipv6 address to be set as NH is %s", glipv6)
return glipv6
return None
# ##################################
# Test cases start here.
# ##################################
def test_ibgp_to_ibgp_p1(request):
"""
Test Capability extended nexthop.
Verify IPv4 routes received with IPv6 nexthop are getting advertised to
another IBGP peer without changing the nexthop
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
global topo
topo23 = deepcopy(topo)
build_config_from_json(tgen, topo23, save_bkup=False)
step("Configure IPv6 EBGP session between R1 and R2 with " "global IPv6 address")
step("Configure IPv6 IBGP session betn R2 & R3 using IPv6 global address")
step("Enable capability extended-nexthop on both the IPv6 BGP peers")
step("Activate same IPv6 nbr from IPv4 unicast family")
step("Enable cap ext nh on r1 and r2 and activate in ipv4 addr family")
step("Verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.")
# verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.
bgp_convergence = verify_bgp_convergence(tgen, topo23)
assert bgp_convergence is True, "Testcase :Failed \n Error:" " {}".format(
bgp_convergence
)
step(" Configure 5 IPv4 static" " routes on R1, Nexthop as different links of R0")
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
}
}
}
}
result = create_router_bgp(tgen, topo23, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes advertised using static and network command are "
" received on R2 BGP and routing table , "
"verify using show ip bgp, show ip route for IPv4 routes ."
)
gllip = get_llip("r1", "r2-link0")
assert gllip is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r2"
protocol = "bgp"
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gllip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r3": {
"dest_link": {
"r2": {
"activate": "ipv4",
"capability": "extended-nexthop",
}
}
}
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r3 = {
"r3": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r3": {
"activate": "ipv4",
"capability": "extended-nexthop",
}
}
}
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r3)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes installed on R3 with global address without "
"changing the nexthop ( nexthop should IPv6 link local which is"
" received from R1)"
)
gipv6 = get_glipv6("r1", "r2-link0")
dut = "r3"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gipv6,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gipv6
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
write_test_footer(tc_name)
def test_ext_nh_cap_red_static_network_ibgp_peer_p1(request):
"""
Test Extended capability next hop, with ibgp peer.
Verify IPv4 routes advertise using "redistribute static" and
"network command" are received on EBGP peer with IPv6 nexthop
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
step(
" Configure IPv6 EBGP session between R1 & R2 with global IPv6 address"
" Enable capability extended-nexthop on the nbr from both the routers"
" Activate same IPv6 nbr from IPv4 unicast family"
)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"default_ipv4_unicast": "False",
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r3": {
"dest_link": {
"r2": {
"capability": "extended-nexthop",
"activate": "ipv4",
"next_hop_self": True,
"activate": "ipv4",
}
}
}
}
}
}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r3 = {
"r3": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r3": {
"capability": "extended-nexthop",
"activate": "ipv4",
}
}
}
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r3)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"default_ipv4_unicast": "False",
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
gllip = get_llip("r1", "r2-link0")
assert gllip is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gllip,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": gllip,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
gllip = get_glipv6("r2", "r3")
assert gllip is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r3"
protocol = "bgp"
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gllip,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": gllip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=gllip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
write_test_footer(tc_name)
def test_bgp_peer_group_p1(request):
"""
Test extended capability next hop with peer groups.
Verify IPv4 routes received with IPv6 nexthop are getting advertised to
another IBGP peer without changing the nexthop
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
global topo
topo1 = deepcopy(topo)
step("Configure IPv6 EBGP session between R1 and R2 with " "global IPv6 address")
step("Configure IPv6 IBGP session betn R2 & R3 using IPv6 global address")
step("Enable capability extended-nexthop on both the IPv6 BGP peers")
step("Activate same IPv6 nbr from IPv4 unicast family")
step("Enable cap ext nh on r1 and r2 and activate in ipv4 addr family")
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"default_ipv4_unicast": "False",
"peer-group": {
"rfc5549": {"capability": "extended-nexthop", "remote-as": "200"}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"activate": "ipv4",
"capability": "extended-nexthop",
"peer-group": "rfc5549",
}
}
}
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"default_ipv4_unicast": "False",
"peer-group": {
"rfc5549": {"capability": "extended-nexthop", "remote-as": "100"}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"capability": "extended-nexthop",
"activate": "ipv4",
"peer-group": "rfc5549",
}
}
},
"r3": {"dest_link": {"r2": {}}},
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r3 = {
"r3": {
"bgp": {
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r3)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step("Verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.")
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase :Failed \n Error:" " {}".format(
bgp_convergence
)
step(" Configure 2 IPv4 static" " routes on R1, Nexthop as different links of R0")
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes advertised using static and network command are "
" received on R2 BGP and routing table , "
"verify using show ip bgp, show ip route for IPv4 routes ."
)
gllip = get_llip("r1", "r2-link0")
assert gllip is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gllip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step("Enable cap ext nh on r1 and r2 and activate in ipv4 addr family")
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"default_ipv4_unicast": "False",
"peer-group": {
"rfc5549": {"capability": "extended-nexthop", "remote-as": "200"}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1-link0": {
"activate": "ipv4",
"capability": "extended-nexthop",
"peer-group": "rfc5549",
}
}
}
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"default_ipv4_unicast": "False",
"peer-group": {
"rfc5549": {"capability": "extended-nexthop", "remote-as": "100"}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r2 = {
"r2": {
"bgp": {
"address_family": {
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2-link0": {
"capability": "extended-nexthop",
"activate": "ipv4",
"peer-group": "rfc5549",
}
}
},
"r3": {"dest_link": {"r2": {}}},
}
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r2)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r3 = {
"r3": {
"bgp": {
"address_family": {
"ipv4": {"unicast": {"neighbor": {"r2": {"dest_link": {"r3": {}}}}}}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r3)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step("Verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.")
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase :Failed \n Error:" " {}".format(
bgp_convergence
)
step(" Configure 2 IPv4 static" " routes on R1, Nexthop as different links of R0")
for rte in range(0, NO_OF_RTES):
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes advertised using static and network command are "
" received on R2 BGP and routing table , "
"verify using show ip bgp, show ip route for IPv4 routes ."
)
gllip = get_llip("r1", "r2-link0")
assert gllip is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": gllip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=gllip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
write_test_footer(tc_name)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))

View File

@ -0,0 +1,661 @@
#!/usr/bin/env python
#
# Copyright (c) 2021 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation, Inc.
# ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""RFC5549 Automation."""
import os
import sys
import time
import json
import pytest
import datetime
from copy import deepcopy
import ipaddr
from re import search as re_search
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
sys.path.append(os.path.join(CWD, "../../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib.topogen import Topogen, get_topogen
from mininet.topo import Topo
from lib.common_config import (
start_topology,
write_test_header,
write_test_footer,
create_prefix_lists,
get_frr_ipv6_linklocal,
verify_rib,
create_static_routes,
check_address_types,
reset_config_on_routers,
step,
create_route_maps,
addKernelRoute,
kill_router_daemons,
start_router_daemons,
create_interfaces_cfg,
)
from lib.topolog import logger
from lib.bgp import (
clear_bgp_and_verify,
clear_bgp,
verify_bgp_convergence,
create_router_bgp,
verify_bgp_rib,
)
from lib.topojson import build_topo_from_json, build_config_from_json
# Global variables
topo = None
# Reading the data from JSON File for topology creation
jsonFile = "{}/rfc5549_ebgp_nbr.json".format(CWD)
try:
with open(jsonFile, "r") as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
# Global variables
NETWORK = {
"ipv4": [
"11.0.20.1/32",
"11.0.20.2/32",
"11.0.20.3/32",
"11.0.20.4/32",
"11.0.20.5/32",
],
"ipv6": ["1::1/128", "1::2/128", "1::3/128", "1::4/128", "1::5/128"],
}
MASK = {"ipv4": "32", "ipv6": "128"}
NEXT_HOP = {
"ipv4": ["10.0.0.1", "10.0.1.1", "10.0.2.1", "10.0.3.1", "10.0.4.1"],
"ipv6": ["Null0", "Null0", "Null0", "Null0", "Null0"],
}
NO_OF_RTES = 2
NETWORK_CMD_IP = "1.0.1.17/32"
ADDR_TYPES = check_address_types()
BGP_CONVERGENCE_TIMEOUT = 10
TOPOOLOGY = """
Please view in a fixed-width font such as Courier.
+----+
| R4 |
| |
+--+-+
| ipv4 nbr
no bgp ebgp |
| ebgp/ibgp
+----+ 5links +----+ +--+-+ +----+
|R0 +----------+ R1 | | R2 | ipv6 nbr |R3 |
| +----------+ +------------+ +-------------+ |
+----+ +----+ ipv6 nbr +----+ +----+
"""
TESTCASES = """
TC6. Verify BGP speaker advertise IPv4 route to peer only if "extended
nexthop capability" is negotiated
TC7. Verify ipv4 route nexthop updated dynamically when in route-map is
applied on receiving BGP peer
TC8. Verify IPv4 routes advertise using "redistribute static" and "network
command" are received on EBGP peer with IPv6 nexthop
TC10. Verify IPv4 routes are deleted after un-configuring of "network
command" and "redistribute static knob"
TC18. Verify IPv4 routes installed with correct nexthop after deactivate
and activate neighbor from address family
TC19. Verify IPv4 route ping is working fine and nexhop installed in kernel
as IPv4 link-local address
TC24. Verify IPv4 prefix-list routes advertised to peer when prefix -list
applied in out direction
TC27. Verify IPv4 routes are intact after BGPd process restart
TC30. Verify Ipv4 route installed with correct next hop when same route
is advertised via IPV4 and IPv6 BGP peers
TC32. Verify IPv4 route received with IPv6 nexthop can be advertised to
another IPv4 BGP peers
"""
class CreateTopo(Topo):
"""
Test topology builder.
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function."""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""Set up the pytest environment."""
global topo, ADDR_TYPES
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(CreateTopo, mod.__name__)
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
BGP_CONVERGENCE
)
logger.info("Running setup_module() done")
def teardown_module():
"""Teardown the pytest environment."""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
tgen.stop_topology()
def get_llip(onrouter, intf):
"""
API to get the link local ipv6 address of a perticular interface
Parameters
----------
* `fromnode`: Source node
* `tonode` : interface for which link local ip needs to be returned.
Usage
-----
result = get_llip('r1', 'r2-link0')
Returns
-------
1) link local ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
tgen = get_topogen()
intf = topo["routers"][onrouter]["links"][intf]["interface"]
llip = get_frr_ipv6_linklocal(tgen, onrouter, intf)
if llip:
logger.info("llip ipv6 address to be set as NH is %s", llip)
return llip
return None
def get_glipv6(onrouter, intf):
"""
API to get the global ipv6 address of a perticular interface
Parameters
----------
* `onrouter`: Source node
* `intf` : interface for which link local ip needs to be returned.
Usage
-----
result = get_glipv6('r1', 'r2-link0')
Returns
-------
1) global ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
glipv6 = (topo["routers"][onrouter]["links"][intf]["ipv6"]).split("/")[0]
if glipv6:
logger.info("Global ipv6 address to be set as NH is %s", glipv6)
return glipv6
return None
# ##################################
# Test cases start here.
# ##################################
def test_ext_nh_cap_red_static_network_ebgp_peer_tc8_p0(request):
"""
Test exted capability nexthop with route map in.
Verify IPv4 routes advertise using "redistribute static" and
"network command" are received on EBGP peer with IPv6 nexthop
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
step("Configure IPv6 EBGP session between R1 and R2 with global" " IPv6 address")
reset_config_on_routers(tgen)
step(
"Enable capability extended-nexthop on the nbr from both the "
" routers Activate same IPv6 nbr from IPv4 unicast family"
)
step(
" Configure 2 IPv4 static "
"routes on R1 (nexthop for static route exists on different "
"link of R0"
)
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv6"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv6"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "True",
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
},
"ipv6": {"unicast": {"redistribute": [{"redist_type": "static"}]}},
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
glip = get_llip("r1", "r2-link0")
assert glip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 and IPv6 routes advertised using static and network command "
"are received on R2 BGP & routing table , verify using show ip bgp "
"show ip route for IPv4 routes and show bgp ipv6,show ipv6 routes "
"for IPv6 routes ."
)
dut = "r2"
protocol = "bgp"
for addr_type in ADDR_TYPES:
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK[addr_type][0],
"no_of_ip": 2,
"next_hop": glip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, addr_type, dut, verify_nh_for_static_rtes, next_hop=glip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, bgp_rib
)
result = verify_rib(
tgen,
addr_type,
dut,
verify_nh_for_static_rtes,
next_hop=glip,
protocol=protocol,
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Verify IPv4 routes are installed with IPv6 global nexthop of R1"
" R1 to R2 connected link"
)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": glip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=glip
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=glip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
def test_ext_nh_cap_remove_red_static_network_ebgp_peer_tc10_p1(request):
"""
Test exted capability nexthop with route map in.
Verify IPv4 routes are deleted after un-configuring of
network command and redistribute static knob
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
step(
"Configure IPv6 EBGP session between R1 and R2 with global IPv6"
" address Enable capability extended-nexthop on the nbr from both"
" the routers , Activate same IPv6 nbr from IPv4 unicast family"
)
step(
" Configure 2 IPv4 static routes "
" on R1 nexthop for static route exists on different link of R0"
)
reset_config_on_routers(tgen)
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 unicast"
" family respectively from R1. Configure loopback on R1 with IPv4 "
"address Advertise loobak from IPv4 unicast family using network "
"command from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"local_as": "100",
"default_ipv4_unicast": "True",
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
},
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 and IPv6 routes advertised using static and network command are"
" received on R2 BGP and routing table , verify using show ip bgp"
" show ip route for IPv4 routes and show bgp, show ipv6 routes"
" for IPv6 routes ."
)
glipv6 = get_llip("r1", "r2-link0")
assert glipv6 is not None, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"advertise_networks": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": get_glipv6,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=get_glipv6
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen,
"ipv4",
dut,
verify_nh_for_static_rtes,
next_hop=get_glipv6,
protocol=protocol,
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"Verify IPv4 routes are installed with IPv6 global nexthop of R1 "
" R1 to R2 connected link"
)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"advertise_networks": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": glipv6,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=glipv6, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static", "delete": True}]
}
},
"ipv6": {
"unicast": {
"redistribute": [{"redist_type": "static", "delete": True}]
}
},
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": glipv6,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=glipv6, expected=False
)
assert (
bgp_rib is not True
), "Testcase {} : Failed \n Error: Routes still" " present in BGP rib".format(
tc_name
)
result = verify_rib(
tgen,
"ipv4",
dut,
verify_nh_for_static_rtes,
next_hop=glipv6,
protocol=protocol,
expected=False,
)
assert (
result is not True
), "Testcase {} : Failed \n Error: Routes " "still present in RIB".format(tc_name)
step(
"After removing IPv4 routes from redistribute static those routes"
" are removed from R2, after re-advertising routes which are "
" advertised using network are still present in the on R2 with "
" IPv6 global nexthop, verify using show ip bgp and show ip routes"
)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": glipv6,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=glipv6, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"advertise_networks": [
{
"network": NETWORK_CMD_IP,
"no_of_network": 1,
"delete": True,
}
]
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
result = verify_rib(
tgen,
"ipv4",
dut,
verify_nh_for_nw_cmd_rtes,
next_hop=glipv6,
protocol=protocol,
expected=False,
)
assert (
result is not True
), "Testcase {} : Failed \n " "Error: Routes still present in BGP rib".format(
tc_name
)
write_test_footer(tc_name)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))

View File

@ -0,0 +1,613 @@
#!/usr/bin/env python
#
# Copyright (c) 2021 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation, Inc.
# ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""RFC5549 Automation."""
import os
import sys
import time
import json
import pytest
import ipaddr
from copy import deepcopy
from re import search as re_search
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
sys.path.append(os.path.join(CWD, "../../"))
from lib.topogen import Topogen, get_topogen
from mininet.topo import Topo
from lib.common_config import (
write_test_header,
start_topology,
create_route_maps,
write_test_footer,
start_router,
stop_router,
verify_rib,
create_static_routes,
check_address_types,
reset_config_on_routers,
step,
shutdown_bringup_interface,
create_interfaces_cfg,
get_frr_ipv6_linklocal,
)
from lib.topolog import logger
from lib.bgp import clear_bgp, verify_bgp_convergence, create_router_bgp, verify_bgp_rib
from lib.topojson import build_topo_from_json, build_config_from_json
# Global variables
topo = None
# Reading the data from JSON File for topology creation
jsonFile = "{}/rfc5549_ebgp_unnumbered_nbr.json".format(CWD)
try:
with open(jsonFile, "r") as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
# Global variables
NO_OF_RTES = 2
NETWORK_CMD_IP = "1.0.1.17/32"
NETWORK = {
"ipv4": [
"11.0.20.1/32",
"11.0.20.2/32",
"11.0.20.3/32",
"11.0.20.4/32",
"11.0.20.5/32",
],
"ipv6": ["1::1/128", "1::2/128", "1::3/128", "1::4/128", "1::5/128"],
}
MASK = {"ipv4": "32", "ipv6": "128"}
NEXT_HOP = {
"ipv4": ["10.0.0.1", "10.0.1.1", "10.0.2.1", "10.0.3.1", "10.0.4.1"],
"ipv6": ["Null0", "Null0", "Null0", "Null0", "Null0"],
}
INTF_LIST = [
"r2-link0",
"r2-link1",
"r2-link2",
"r2-link3",
"r2-link4",
"r2-link5",
"r2-link6",
"r2-link7",
]
ADDR_TYPES = check_address_types()
TOPOOLOGY = """
Please view in a fixed-width font such as Courier.
+----+
| R4 |
| |
+--+-+
| ipv4 nbr
no bgp ebgp/ibgp |
| ebgp/ibgp
+----+ 5links +----+ 8links +--+-+ +----+
|R0 +----------+ R1 +------------+ R2 | ipv6 nbr |R3 |
| +----------+ +------------+ +-------------+ |
+----+ +----+ ipv6 nbr +----+ +----+
"""
TESTCASES = """
1. Verify IPv4 routes are advertised when IPv6 EBGP loopback session
established using Unnumbered interface
2. Verify IPv4 routes are installed with correct nexthop after
shut / no shut of nexthop and BGP peer interfaces
3. Verify IPv4 routes are intact after stop and start the FRR services
"""
class CreateTopo(Topo):
"""
Test topology builder.
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function."""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""Set up the pytest environment."""
global topo, ADDR_TYPES
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(CreateTopo, mod.__name__)
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
BGP_CONVERGENCE
)
logger.info("Running setup_module() done")
def teardown_module():
"""Teardown the pytest environment."""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
tgen.stop_topology()
def get_llip(onrouter, intf):
"""
API to get the link local ipv6 address of a perticular interface
Parameters
----------
* `fromnode`: Source node
* `tonode` : interface for which link local ip needs to be returned.
Usage
-----
result = get_llip('r1', 'r2-link0')
Returns
-------
1) link local ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
tgen = get_topogen()
intf = topo["routers"][onrouter]["links"][intf]["interface"]
llip = get_frr_ipv6_linklocal(tgen, onrouter, intf)
if llip:
logger.info("llip ipv6 address to be set as NH is %s", llip)
return llip
return None
def get_glipv6(onrouter, intf):
"""
API to get the global ipv6 address of a perticular interface
Parameters
----------
* `onrouter`: Source node
* `intf` : interface for which link local ip needs to be returned.
Usage
-----
result = get_glipv6('r1', 'r2-link0')
Returns
-------
1) global ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
glipv6 = (topo["routers"][onrouter]["links"][intf]["ipv6"]).split("/")[0]
if glipv6:
logger.info("Global ipv6 address to be set as NH is %s", glipv6)
return glipv6
return None
# ##################################
# Test cases start here.
# ##################################
def test_unnumbered_loopback_ebgp_nbr_p0(request):
"""
Test extended capability nexthop with un numbered ebgp.
Verify IPv4 routes are advertised when IPv6 EBGP loopback
session established using Unnumbered interface
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
step("Configure IPv6 EBGP Unnumbered session between R1 and R2")
step("Enable capability extended-nexthop on both the IPv6 BGP peers")
step("Activate same IPv6 nbr from IPv4 unicast family")
step("Enable cap ext nh on r1 and r2 and activate in ipv4 addr family")
step("Verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.")
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase {} :Failed \n Error: {}".format(
tc_name, bgp_convergence
)
step(" Configure 5 IPv4 static" " routes on R1, Nexthop as different links of R0")
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
},
"ipv6": {"unicast": {"redistribute": [{"redist_type": "static"}]}},
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes advertised using static and network command are "
" received on R2 BGP and routing table , "
"verify using show ip bgp, show ip route for IPv4 routes ."
)
llip = get_llip("r1", "r2-link0")
assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, llip)
dut = "r2"
protocol = "bgp"
for rte in range(0, NO_OF_RTES):
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK["ipv4"][rte], "no_of_ip": 1, "next_hop": llip}
]
}
}
""" interface_list = ['r1-link0','r1-link1']
nh_list =[]
for i in range(NO_OF_RTES):
nh_list.append(topo['routers']['r2']['links'][i][
'interface']) """
bgp_rib = verify_rib(
tgen,
"ipv4",
dut,
# verify_nh_for_static_rtes, next_hop='r2-r1-eth0')
verify_nh_for_static_rtes,
next_hop=llip,
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, bgp_rib
)
result = verify_rib(
tgen,
"ipv4",
dut,
verify_nh_for_static_rtes,
next_hop=llip,
protocol=protocol,
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
# verify the routes with nh as ext_nh
verify_nh_for_nw_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK_CMD_IP, "no_of_ip": 1, "next_hop": llip}
]
}
}
bgp_rib = verify_rib(
tgen,
"ipv4",
dut,
# verify_nh_for_nw_rtes, next_hop='r2-r1-eth0')
verify_nh_for_nw_rtes,
next_hop=llip,
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# stop/start -> restart FRR router and verify
stop_router(tgen, "r1")
stop_router(tgen, "r2")
start_router(tgen, "r1")
start_router(tgen, "r2")
step(
"After stop/start of FRR services , verify session up and routes "
"came up fine ,nh is proper using show bgp & show ipv6 route on R2 "
)
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase {} :Failed \n Error: {}".format(
tc_name, bgp_convergence
)
llip = get_llip("r1", "r2-link0")
assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": llip,
}
]
}
}
bgp_rib = verify_bgp_rib(
tgen,
"ipv4",
dut,
# verify_nh_for_static_rtes, next_hop='r2-r1-eth0')
verify_nh_for_static_rtes,
next_hop=llip,
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
verify_nh_for_nw_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK_CMD_IP, "no_of_ip": 1, "next_hop": llip}
]
}
}
bgp_rib = verify_rib(
tgen,
"ipv4",
dut,
# verify_nh_for_nw_rtes, next_hop='r2-r1-eth0')
verify_nh_for_nw_rtes,
next_hop=llip,
)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
write_test_footer(tc_name)
def test_restart_frr_p2(request):
"""
Test extended capability nexthop , restart frr.
Verify IPv4 routes are intact after stop and start the FRR services
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
step("Configure IPv6 EBGP Unnumbered session between R1 and R2")
step("Enable capability extended-nexthop on both the IPv6 BGP peers")
step("Activate same IPv6 nbr from IPv4 unicast family")
step("Enable cap ext nh on r1 and r2 and activate in ipv4 addr family")
step("Verify bgp convergence as ipv6 nbr is enabled on ipv4 addr family.")
reset_config_on_routers(tgen)
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase {} :Failed \n Error: {}".format(
tc_name, bgp_convergence
)
step(" Configure 5 IPv4 static" " routes on R1, Nexthop as different links of R0")
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 "
"unicast family respectively from R1 using red static cmd "
"Advertise loopback from IPv4 unicast family using network command "
"from R1"
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
},
"ipv6": {"unicast": {"redistribute": [{"redist_type": "static"}]}},
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
"IPv4 routes advertised using static and network command are "
" received on R2 BGP and routing table , "
"verify using show ip bgp, show ip route for IPv4 routes ."
)
llip = get_llip("r1", "r2-link0")
assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": llip,
}
]
}
}
bgp_rib = verify_rib(tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
verify_nh_for_nw_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK_CMD_IP, "no_of_ip": 1, "next_hop": llip}
]
}
}
bgp_rib = verify_rib(tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# stop/start -> restart FRR router and verify
stop_router(tgen, "r1")
stop_router(tgen, "r2")
start_router(tgen, "r1")
start_router(tgen, "r2")
step(
"After stop/start of FRR services , verify session up and routes "
"came up fine ,nh is proper using show bgp & show ipv6 route on R2 "
)
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase {} :Failed \n Error: {}".format(
tc_name, bgp_convergence
)
llip = get_llip("r1", "r2-link0")
assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# verify the routes with nh as ext_nh
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK["ipv4"][0], "no_of_ip": 1, "next_hop": llip}
]
}
}
bgp_rib = verify_rib(tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
# verify the routes with nh as ext_nh
verify_nh_for_nw_rtes = {
"r1": {
"static_routes": [
{"network": NETWORK_CMD_IP, "no_of_ip": 1, "next_hop": llip}
]
}
}
bgp_rib = verify_rib(tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip)
assert bgp_rib is True, "Testcase {} : Failed \n Error: {}".format(tc_name, bgp_rib)
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
write_test_footer(tc_name)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))

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#!/usr/bin/env python
#
# Copyright (c) 2021 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation, Inc.
# ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""RFC5549 Automation."""
import os
import sys
import time
import json
import pytest
import ipaddr
from re import search as re_search
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
sys.path.append(os.path.join(CWD, "../../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib.topogen import Topogen, get_topogen
from mininet.topo import Topo
from lib.common_config import (
start_topology,
write_test_header,
write_test_footer,
create_interfaces_cfg,
verify_rib,
create_static_routes,
check_address_types,
step,
reset_config_on_routers,
get_frr_ipv6_linklocal,
)
from lib.topolog import logger
from lib.bgp import clear_bgp, verify_bgp_convergence, create_router_bgp
from lib.topojson import build_topo_from_json, build_config_from_json
# Global variables
topo = None
# Reading the data from JSON File for topology creation
jsonFile = "{}/rfc5549_ibgp_unnumbered_nbr.json".format(CWD)
try:
with open(jsonFile, "r") as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
# Global variables
NETWORK_CMD_IP = "1.0.1.17/32"
NETWORK = {
"ipv4": [
"11.0.20.1/32",
"11.0.20.2/32",
"11.0.20.3/32",
"11.0.20.4/32",
"11.0.20.5/32",
],
"ipv6": ["1::1/128", "1::2/128", "1::3/128", "1::4/128", "1::5/128"],
}
MASK = {"ipv4": "32", "ipv6": "128"}
NEXT_HOP = {
"ipv4": ["10.0.0.1", "10.0.1.1", "10.0.2.1", "10.0.3.1", "10.0.4.1"],
"ipv6": ["Null0", "Null0", "Null0", "Null0", "Null0"],
}
ADDR_TYPES = check_address_types()
NO_OF_RTES = 2
TOPOOLOGY = """
Please view in a fixed-width font such as Courier.
+----+
| R4 |
| |
+--+-+
| ipv4 nbr
no bgp ebgp/ibgp |
| ebgp/ibgp
+----+ 2links +----+ 8links +--+-+ +----+
|R0 +----------+ R1 + + R2 | ipv6 nbr |R3 |
| +----------+ +------------+ +-------------+ |
+----+ +----+ ipv6 nbr +----+ +----+
"""
TESTCASES = """
1. Verify IPv4 routes are deleted after un-configuring "network command
" and "redistribute static knob" with Unnumbered IPv6 IBGP session
"""
class CreateTopo(Topo):
"""
Test topology builder.
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function."""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""Set up the pytest environment."""
global topo
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(CreateTopo, mod.__name__)
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
BGP_CONVERGENCE
)
logger.info("Running setup_module() done")
def teardown_module():
"""Teardown the pytest environment."""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
tgen.stop_topology()
def get_llip(onrouter, intf):
"""
API to get the link local ipv6 address of a perticular interface
Parameters
----------
* `fromnode`: Source node
* `tonode` : interface for which link local ip needs to be returned.
Usage
-----
result = get_llip('r1', 'r2-link0')
Returns
-------
1) link local ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
tgen = get_topogen()
intf = topo["routers"][onrouter]["links"][intf]["interface"]
llip = get_frr_ipv6_linklocal(tgen, onrouter, intf)
if llip:
logger.info("llip ipv6 address to be set as NH is %s", llip)
return llip
return None
def get_glipv6(onrouter, intf):
"""
API to get the global ipv6 address of a perticular interface
Parameters
----------
* `onrouter`: Source node
* `intf` : interface for which link local ip needs to be returned.
Usage
-----
result = get_glipv6('r1', 'r2-link0')
Returns
-------
1) global ipv6 address from the interface.
2) errormsg - when link local ip not found.
"""
glipv6 = (topo["routers"][onrouter]["links"][intf]["ipv6"]).split("/")[0]
if glipv6:
logger.info("Global ipv6 address to be set as NH is %s", glipv6)
return glipv6
return None
# ##################################
# Test cases start here.
# ##################################
def test_ext_nh_cap_red_static_network_ebgp_peer_unnumbered_nbr_p1(request):
"""
Test extended capability nexthop.
Verify IPv4 routes advertise using "redistribute static" and
"network command" are received on EBGP peer with IPv6 nexthop
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
reset_config_on_routers(tgen)
step(
"Configure IPv6 IBGP Unnumbered session between R1 and R2 and enable "
"ipv6 nd ra-interval 10 in the interface"
)
step(
"Enable capability extended-nexthop"
"on the neighbor from both the routers and "
"ipv6 nd ra-interval 10 on link connected between R1 and R2"
)
bgp_convergence = verify_bgp_convergence(tgen, topo)
assert bgp_convergence is True, "Testcase :Failed \n Error:" " {}".format(
bgp_convergence
)
for rte in range(0, NO_OF_RTES):
# Create Static routes
input_dict = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][rte],
"no_of_ip": 1,
"next_hop": NEXT_HOP["ipv4"][rte],
}
]
}
}
result = create_static_routes(tgen, input_dict)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step(
"Advertise static routes from IPv4 unicast family and IPv6 unicast "
"family respectively from R1 "
"Configure loopback on R1 with IPv4 address Advertise loopback "
"from IPv4 unicast family using network cmd from R1 "
)
configure_bgp_on_r1 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [{"redist_type": "static"}],
"advertise_networks": [
{"network": NETWORK_CMD_IP, "no_of_network": 1}
],
}
}
}
}
}
}
result = create_router_bgp(tgen, topo, configure_bgp_on_r1)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
llip = get_llip("r1", "r2-link0")
assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
step(
" IPv4 and IPv6 routes advertised using static and network command are"
" received on R2 BGP and routing table , verify using show ip bgp"
" show ip route for IPv4 routes and show bgp show ipv6 routes"
" for IPv6 routes ."
)
dut = "r2"
protocol = "bgp"
verify_nh_for_static_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK["ipv4"][0],
"no_of_ip": NO_OF_RTES,
"next_hop": llip,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_static_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
verify_nh_for_nw_cmd_rtes = {
"r1": {
"static_routes": [
{
"network": NETWORK_CMD_IP,
"no_of_ip": 1,
"next_hop": llip,
}
]
}
}
result = verify_rib(
tgen, "ipv4", dut, verify_nh_for_nw_cmd_rtes, next_hop=llip, protocol=protocol
)
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
write_test_footer(tc_name)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))