This command will trigger the OSPF forwarding address suppression in
translated type-5 LSAs, causing a NSSA ABR to use 0.0.0.0 as a forwarding
address instead of copying the address from the type-7 LSA
Example: In a topology like: R1 --- R2(ABR) --- R3(ASBR)
R3 is announcing a type-7 LSA that is translated to type-5 by the R2 ABR.
The forwarding address in the type-5 is by default copied from the type-7
r1# sh ip os da external
AS External Link States
LS age: 6
Options: 0x2 : *|-|-|-|-|-|E|-
LS Flags: 0x6
LS Type: AS-external-LSA
Link State ID: 3.3.3.3 (External Network Number)
Advertising Router: 10.0.25.2
LS Seq Number: 80000001
Checksum: 0xcf99
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 10.0.23.3 <--- address copied from type-7 lsa
External Route Tag: 0
r2# sh ip os database
NSSA-external Link States (Area 0.0.0.1 [NSSA])
Link ID ADV Router Age Seq# CkSum Route
3.3.3.3 10.0.23.3 8 0x80000001 0x431d E2 3.3.3.3/32 [0x0]
AS External Link States
Link ID ADV Router Age Seq# CkSum Route
3.3.3.3 10.0.25.2 0 0x80000001 0xcf99 E2 3.3.3.3/32 [0x0]
r2# conf t
r2(config)# router ospf
r2(config-router)# area 1 nssa suppress-fa
r2(config-router)# exit
r2(config)# exit
r2# sh ip os database
NSSA-external Link States (Area 0.0.0.1 [NSSA])
Link ID ADV Router Age Seq# CkSum Route
3.3.3.3 10.0.23.3 66 0x80000001 0x431d E2 3.3.3.3/32 [0x0]
AS External Link States
Link ID ADV Router Age Seq# CkSum Route
3.3.3.3 10.0.25.2 16 0x80000002 0x0983 E2 3.3.3.3/32 [0x0]
r1# sh ip os da external
OSPF Router with ID (11.11.11.11)
AS External Link States
LS age: 34
Options: 0x2 : *|-|-|-|-|-|E|-
LS Flags: 0x6
LS Type: AS-external-LSA
Link State ID: 3.3.3.3 (External Network Number)
Advertising Router: 10.0.25.2
LS Seq Number: 80000002
Checksum: 0x0983
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0 <--- address set to 0
External Route Tag: 0
r2# conf t
r2(config)# router ospf
r2(config-router)# no area 1 nssa suppress-fa
r2(config-router)# exit
r1# sh ip os da external
OSPF Router with ID (11.11.11.11)
AS External Link States
LS age: 1
Options: 0x2 : *|-|-|-|-|-|E|-
LS Flags: 0x6
LS Type: AS-external-LSA
Link State ID: 3.3.3.3 (External Network Number)
Advertising Router: 10.0.25.2
LS Seq Number: 80000003
Checksum: 0xcb9b
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0 <--- address set to 0
External Route Tag: 0
r2# conf t
r2(config)# router ospf
r2(config-router)# no area 1 nssa suppress-fa
r2(config-router)# exit
r1# sh ip os da external
OSPF Router with ID (11.11.11.11)
AS External Link States
LS age: 1
Options: 0x2 : *|-|-|-|-|-|E|-
LS Flags: 0x6
LS Type: AS-external-LSA
Link State ID: 3.3.3.3 (External Network Number)
Advertising Router: 10.0.25.2
LS Seq Number: 80000003
Checksum: 0xcb9b
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 10.0.23.3 <--- address copied from type-7 lsa
External Route Tag: 0
Signed-off-by: ckishimo <carles.kishimoto@gmail.com>
This command is currently useful only for developers.
Let's hide it to not confuse end users by having both
"show runnning-config" and "show configuration running".
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
Make the local buffer offered to printfrr extension tokens
bigger; existing size wasn't quite enough for some of the
more elaborate struct prefix types.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
1. When VNI export RT changes, for each local es_evi, update local
EAD/ES and EAD/EVI routes and advertise.
2. When VNI import RT changes, uninstall all type-1 routes imported in
the VNI and import routes carrying the updated RT.
Signed-off-by: Ameya Dharkar <adharkar@vmware.com>
Move `bgp_peer_config_apply` outside `bgp_peer_configure_bfd` (and
document it) so we only call the session installation once with one
set of timers. It also makes all calls of that function
equal (e.g. always calls `bgp_peer_config_apply` afterwards).
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Remove old BFD API usage and replace it with the new one.
Highlights:
- More shared code: the daemon gets notified with callbacks instead of
having to roll its own code to find the notified sessions.
- Less code to integrate with BFD.
- Remove hidden commands to configure single / multi hop. Use
protocol data instead.
BGP can determine if a peer is single/multi hop according to the
following criteria:
a. If the IP address is a link-local address (single hop)
b. The network is shared with peer (single hop)
c. BGP is configured for eBGP multi hop / TTL security (multi hop)
- Respect the configuration hierarchy:
a. Peer configuration take precendence over peer-group
configuration.
b. When peer group configuration is removed, reset peer
BFD configurations to defaults (unless peer had specific
configs).
Example:
neighbor foo peer-group
neighbor foo bfd profile X
neighbor 192.168.0.2 peer-group foo
neighbor 192.168.0.2 bfd
! If peer-group is removed the profile configuration gets
! removed from peer 192.168.0.2, but BFD will still enabled
! because of the neighbor specific bfd configuration.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
The BFD function `bgp_bfd_is_peer_multihop` will no longer exist and now
both code paths are equal.
Longer explanation:
Cumulus was previously using the BFD function to help determine whether a
peer is multi hop or not, because there is a configuration to set BFD
to use single or multi hop.
Current BFD code can automatically pick between single/multi hop by
using the protocol information and so it is a good idea to have that
tested/used than relying on yet another duplicated information.
(BFD extracts the TTL information from protocol and selects
single/multi hop based on that)
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
New BFD protocol integration API with abstractions to fix most common
protocol integration errors:
- Set address family together with the source/destination addresses
- Set the TTL together with the single/multi hop option
- Set/unset profile/interface easily
- Keep the arguments so we don't have to rebuild them every time
- Install/uninstall functions that keep track of current state so the
daemon doesn't have to
- Reinstall when critical configuration changes (address, multi hop
etc...)
- Reconfigure BFD when the daemon restarts automatically
- Automatically calls the user defined callback for session update
- Shutdown handler for all protocols
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
New BFD protocol integration API with abstractions to fix most common
protocol integration errors:
- Set address family together with the source/destination addresses
- Set the TTL together with the single/multi hop option
- Set/unset profile/interface easily
- Keep the arguments so we don't have to rebuild them every time
- Install/uninstall functions that keep track of current state so the
daemon doesn't have to
- Reinstall when critical configuration changes (address, multi hop
etc...)
- Reconfigure BFD when the daemon restarts automatically
- Automatically calls the user defined callback for session update
- Shutdown handler for all protocols
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
