mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-04-28 15:36:25 +00:00
master
7 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
David Lamparter
|
acddc0ed3c |
*: auto-convert to SPDX License IDs
Done with a combination of regex'ing and banging my head against a wall. Signed-off-by: David Lamparter <equinox@opensourcerouting.org> |
||
|
Madhuri Kuruganti
|
e85e4a8d16 |
bgpd: conditional advertisement code cleanup
Signed-off-by: Madhuri Kuruganti <maduri111@gmail.com> |
||
|
Madhuri Kuruganti
|
8093d7999c |
bgpd: adding debug command for conditional advertisement
Signed-off-by: Madhuri Kuruganti <maduri111@gmail.com> |
||
|
Quentin Young
|
389e4f92d6 |
bgpd: add knob to config cond-adv scanner period
Adds a knob that sets the time between loc-rib scans for conditional advertisement. I chose the range (5-240) because 1 second seems dumb and too easy to hurt yourself at even moderate scale, 5 seconds you can still hurt yourself but I could see a use case for it, and 4 minutes should be enough for anyone (tm) Signed-off-by: Quentin Young <qlyoung@nvidia.com> |
||
|
Madhuri Kuruganti
|
1a0416bd6f |
bgpd: conditional advertisement - copyright
Signed-off-by: Madhuri Kuruganti <k.madhuri@samsung.com> |
||
|
Madhuri Kuruganti
|
c385f82af3 |
bgpd: conditional advertisement - other match rules support
Sample Configuration with prefix-list and community match rules --------------------------------------------------------------- R1 ------- R2(DUT) ------- R3 Router2# show running-config Building configuration... Current configuration: ! frr version 7.6-dev-MyOwnFRRVersion frr defaults traditional hostname router log file /var/log/frr/bgpd.log log syslog informational hostname Router2 service integrated-vtysh-config ! debug bgp updates in debug bgp updates out ! debug route-map ! ip route 20.20.0.0/16 blackhole ipv6 route 2001:db8::200/128 blackhole ! interface enp0s9 ip address 10.10.10.2/24 ! interface enp0s10 ip address 10.10.20.2/24 ! interface lo ip address 2.2.2.2/32 ! router bgp 2 bgp log-neighbor-changes no bgp ebgp-requires-policy neighbor 10.10.10.1 remote-as 1 neighbor 10.10.20.3 remote-as 3 ! address-family ipv4 unicast neighbor 10.10.10.1 soft-reconfiguration inbound neighbor 10.10.20.3 soft-reconfiguration inbound neighbor 10.10.20.3 advertise-map ADV-MAP non-exist-map EXIST-MAP exit-address-family ! ip prefix-list DEFAULT seq 5 permit 1.1.1.5/32 ip prefix-list DEFAULT seq 10 permit 1.1.1.1/32 ip prefix-list EXIST seq 5 permit 10.10.10.10/32 ip prefix-list DEFAULT-ROUTE seq 5 permit 0.0.0.0/0 ip prefix-list IP1 seq 5 permit 10.139.224.0/20 ip prefix-list T2 seq 5 permit 1.1.1.5/32 ! bgp community-list standard DC-ROUTES seq 5 permit 64952:3008 bgp community-list standard DC-ROUTES seq 10 permit 64671:501 bgp community-list standard DC-ROUTES seq 15 permit 64950:3009 bgp community-list standard DEFAULT-ROUTE seq 5 permit 65013:200 ! route-map ADV-MAP permit 10 match ip address prefix-list IP1 ! route-map ADV-MAP permit 20 match community DC-ROUTES ! route-map EXIST-MAP permit 10 match community DEFAULT-ROUTE match ip address prefix-list DEFAULT-ROUTE ! line vty ! end Router2# Router2# show ip bgp 0.0.0.0 BGP routing table entry for 0.0.0.0/0 Paths: (1 available, best #1, table default) Advertised to non peer-group peers: 10.10.10.1 10.10.20.3 1 10.10.10.1 from 10.10.10.1 (10.139.224.1) Origin IGP, metric 0, valid, external, best (First path received) Community: 64848:3011 65011:200 65013:200 Last update: Tue Oct 6 02:39:42 2020 Router2# Sample output with non-exist-map when default route present in table -------------------------------------------------------------------- Router2# show ip bgp BGP table version is 4, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 0.0.0.0/0 10.10.10.1 0 0 1 i *> 1.1.1.1/32 10.10.10.1 0 0 1 i *> 1.1.1.5/32 10.10.10.1 0 0 1 i *> 10.139.224.0/20 10.10.10.1 0 0 1 ? Displayed 4 routes and 4 total paths Router2# show ip bgp neighbors 10.10.20.3 advertised-routes BGP table version is 4, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 0.0.0.0/0 0.0.0.0 0 1 i *> 1.1.1.5/32 0.0.0.0 0 1 i <<<<<<<<< non-exist-map : 0.0.0.0/0 is present so, 10.139.224.0/20 not advertised Total number of prefixes 2 Sample output with non-exist-map when default route not present in table ------------------------------------------------------------------------ Router2# show ip bgp BGP table version is 5, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 1.1.1.1/32 10.10.10.1 0 0 1 i *> 1.1.1.5/32 10.10.10.1 0 0 1 i *> 10.139.224.0/20 10.10.10.1 0 0 1 ? Displayed 3 routes and 3 total paths Router2# Router2# Router2# show ip bgp neighbors 10.10.20.3 advertised-routes BGP table version is 5, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 1.1.1.1/32 0.0.0.0 0 1 i *> 1.1.1.5/32 0.0.0.0 0 1 i *> 10.139.224.0/20 0.0.0.0 0 1 ? <<<<<<<<< non-exist-map : 0.0.0.0/0 is not present so, 10.139.224.0/20 advertised Total number of prefixes 3 Router2# Sample output with exist-map when default route present in table -------------------------------------------------------------------- Router2# show ip bgp BGP table version is 8, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 0.0.0.0/0 10.10.10.1 0 0 1 i *> 1.1.1.1/32 10.10.10.1 0 0 1 i *> 1.1.1.5/32 10.10.10.1 0 0 1 i *> 10.139.224.0/20 10.10.10.1 0 0 1 ? Displayed 4 routes and 4 total paths Router2# Router2# Router2# Router2# Router2# show ip bgp neighbors 10.10.20.3 advertised-routes BGP table version is 8, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 0.0.0.0/0 0.0.0.0 0 1 i *> 1.1.1.1/32 0.0.0.0 0 1 i *> 1.1.1.5/32 0.0.0.0 0 1 i *> 10.139.224.0/20 0.0.0.0 0 1 ? <<<<<<<<< exist-map : 0.0.0.0/0 is present so, 10.139.224.0/20 advertised Total number of prefixes 4 Router2# Sample output with exist-map when default route not present in table -------------------------------------------------------------------- Router2# show ip bgp BGP table version is 9, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 1.1.1.1/32 10.10.10.1 0 0 1 i *> 1.1.1.5/32 10.10.10.1 0 0 1 i *> 10.139.224.0/20 10.10.10.1 0 0 1 ? Displayed 3 routes and 3 total paths Router2# Router2# Router2# Router2# show ip bgp neighbors 10.10.20.3 advertised-routes BGP table version is 9, local router ID is 2.2.2.2, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path *> 1.1.1.5/32 0.0.0.0 0 1 i <<<<<<<<< exist-map : 0.0.0.0/0 is not present so, 10.139.224.0/20 not advertised Total number of prefixes 1 Router2# Signed-off-by: Madhuri Kuruganti <k.madhuri@samsung.com> |
||
|
Madhuri Kuruganti
|
7f7940e6bf |
bgpd: conditional advertisement
Implemented as per the feature description given in the source link.
Descriprion:
The BGP conditional advertisement feature uses the non-exist-map or exist-map
and the advertise-map keywords of the neighbor advertise-map command in order
to track routes by the route prefix.
non-exist-map :
If a route prefix is not present in output of the non-exist-map command, then
the route specified by the advertise-map command is announced.
exist-map :
If a route prefix is present in output of the exist-map command, then the route
specified by the advertise-map command is announced.
The conditional BGP announcements are sent in addition to the normal
announcements that a BGP router sends to its peers.
The conditional advertisement process is triggered by the BGP scanner process,
which runs every 60 seconds. This means that the maximum time for the conditional
advertisement to take effect is 60 seconds. The conditional advertisement can take
effect sooner, depending on when the tracked route is removed from the BGP table
and when the next instance of the BGP scanner occurs.
Sample Configuration on DUT
---------------------------
Router2# show running-config
Building configuration...
Current configuration:
!
frr version 7.6-dev-MyOwnFRRVersion
frr defaults traditional
hostname router
log file /var/log/frr/bgpd.log
log syslog informational
hostname Router2
service integrated-vtysh-config
!
debug bgp updates in
debug bgp updates out
!
debug route-map
!
ip route 200.200.0.0/16 blackhole
ipv6 route 2001:db8::200/128 blackhole
!
interface enp0s9
ip address 10.10.10.2/24
!
interface enp0s10
ip address 10.10.20.2/24
!
interface lo
ip address 2.2.2.2/24
ipv6 address 2001:db8::2/128
!
router bgp 2
bgp log-neighbor-changes
no bgp ebgp-requires-policy
neighbor 10.10.10.1 remote-as 1
neighbor 10.10.20.3 remote-as 3
!
address-family ipv4 unicast
network 2.2.2.0/24
network 200.200.0.0/16
neighbor 10.10.10.1 soft-reconfiguration inbound
neighbor 10.10.10.1 advertise-map ADVERTISE non-exist-map CONDITION
neighbor 10.10.20.3 soft-reconfiguration inbound
exit-address-family
!
address-family ipv6 unicast
network 2001:db8::2/128
network 2001:db8::200/128
neighbor 10.10.10.1 activate
neighbor 10.10.10.1 soft-reconfiguration inbound
neighbor 10.10.10.1 advertise-map ADVERTISE_6 non-exist-map CONDITION_6
neighbor 10.10.20.3 activate
neighbor 10.10.20.3 soft-reconfiguration inbound
exit-address-family
!
access-list CONDITION seq 5 permit 3.3.3.0/24
access-list ADVERTISE seq 5 permit 2.2.2.0/24
access-list ADVERTISE seq 6 permit 200.200.0.0/16
access-list ADVERTISE seq 7 permit 20.20.0.0/16
!
ipv6 access-list ADVERTISE_6 seq 5 permit 2001:db8::2/128
ipv6 access-list CONDITION_6 seq 5 permit 2001:db8::3/128
!
route-map ADVERTISE permit 10
match ip address ADVERTISE
!
route-map CONDITION permit 10
match ip address CONDITION
!
route-map ADVERTISE_6 permit 10
match ipv6 address ADVERTISE_6
!
route-map CONDITION_6 permit 10
match ipv6 address CONDITION_6
!
line vty
!
end
Router2#
Withdraw when non-exist-map prefixes present in BGP table:
----------------------------------------------------------
Router2# show ip bgp all wide
For address family: IPv4 Unicast
BGP table version is 8, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 10.10.10.1 0 0 1 i
*> 2.2.2.0/24 0.0.0.0 0 32768 i
*> 3.3.3.0/24 10.10.20.3 0 0 3 i
*> 200.200.0.0/16 0.0.0.0 0 32768 i
Displayed 4 routes and 4 total paths
For address family: IPv6 Unicast
BGP table version is 8, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001:db8::1/128 fe80::a00:27ff:fecb:ad57 0 0 1 i
*> 2001:db8::2/128 :: 0 32768 i
*> 2001:db8::3/128 fe80::a00:27ff:fe76:6738 0 0 3 i
*> 2001:db8::200/128 :: 0 32768 i
Displayed 4 routes and 4 total paths
Router2#
Router2# show ip bgp neighbors 10.10.10.1
BGP neighbor is 10.10.10.1, remote AS 1, local AS 2, external link
!--- Output suppressed.
For address family: IPv4 Unicast
Update group 9, subgroup 5
Packet Queue length 0
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(all)
Condition NON_EXIST, Condition-map *CONDITION, Advertise-map *ADVERTISE, status: Withdraw
1 accepted prefixes
For address family: IPv6 Unicast
Update group 10, subgroup 6
Packet Queue length 0
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(all)
Condition NON_EXIST, Condition-map *CONDITION_6, Advertise-map *ADVERTISE_6, status: Withdraw
1 accepted prefixes
!--- Output suppressed.
Router2#
Here 2.2.2.0/24 & 200.200.0.0/16 (prefixes in advertise-map) are withdrawn
by conditional advertisement scanner as the prefix(3.3.3.0/24) specified
by non-exist-map is present in BGP table.
Router2# show ip bgp all neighbors 10.10.10.1 advertised-routes wide
For address family: IPv4 Unicast
BGP table version is 8, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 0.0.0.0 0 1 i
*> 3.3.3.0/24 0.0.0.0 0 3 i
Total number of prefixes 2
For address family: IPv6 Unicast
BGP table version is 8, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001:db8::1/128 :: 0 1 i
*> 2001:db8::3/128 :: 0 3 i
*> 2001:db8::200/128 :: 0 32768 i
Total number of prefixes 3
Router2#
Advertise when non-exist-map prefixes not present in BGP table:
---------------------------------------------------------------
After Removing 3.3.3.0/24 (prefix present in non-exist-map),
2.2.2.0/24 & 200.200.0.0/16 (prefixes present in advertise-map) are advertised
Router2# show ip bgp all wide
For address family: IPv4 Unicast
BGP table version is 9, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 10.10.10.1 0 0 1 i
*> 2.2.2.0/24 0.0.0.0 0 32768 i
*> 200.200.0.0/16 0.0.0.0 0 32768 i
Displayed 3 routes and 3 total paths
For address family: IPv6 Unicast
BGP table version is 9, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001:db8::1/128 fe80::a00:27ff:fecb:ad57 0 0 1 i
*> 2001:db8::2/128 :: 0 32768 i
*> 2001:db8::200/128 :: 0 32768 i
Displayed 3 routes and 3 total paths
Router2#
Router2# show ip bgp neighbors 10.10.10.1
!--- Output suppressed.
For address family: IPv4 Unicast
Update group 9, subgroup 5
Packet Queue length 0
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(all)
Condition NON_EXIST, Condition-map *CONDITION, Advertise-map *ADVERTISE, status: Advertise
1 accepted prefixes
For address family: IPv6 Unicast
Update group 10, subgroup 6
Packet Queue length 0
Inbound soft reconfiguration allowed
Community attribute sent to this neighbor(all)
Condition NON_EXIST, Condition-map *CONDITION_6, Advertise-map *ADVERTISE_6, status: Advertise
1 accepted prefixes
!--- Output suppressed.
Router2#
Router2# show ip bgp all neighbors 10.10.10.1 advertised-routes wide
For address family: IPv4 Unicast
BGP table version is 9, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 0.0.0.0 0 1 i
*> 2.2.2.0/24 0.0.0.0 0 32768 i
*> 200.200.0.0/16 0.0.0.0 0 32768 i
Total number of prefixes 3
For address family: IPv6 Unicast
BGP table version is 9, local router ID is 2.2.2.2, vrf id 0
Default local pref 100, local AS 2
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001:db8::1/128 :: 0 1 i
*> 2001:db8::2/128 :: 0 32768 i
*> 2001:db8::200/128 :: 0 32768 i
Total number of prefixes 3
Router2#
Signed-off-by: Madhuri Kuruganti <k.madhuri@samsung.com>
|