RIPv2 in VRF

[Mihai]

Hi,

The configuration is correct, the issue was related to the iptables 
firewall which by default was blocking the traffic on ens34 once 
assigned to VRF.

On 06/11/2024 21:44, Mihai wrote:
> Hi,
> 
> I am trying to run RIPv2 in VRF and this doesn't seem to work correctly.
> There is no RIP neighbor shown in BIRD, however a tcpdump running on the 
> interface is showing RIP packets IN/OUT, advertising and receiving routes.
> 
> The configuration is below, am I missing something?
> 
> ipv4 table xxx;
> protocol direct direct_xxx {
>          vrf "xxx";
>          ipv4 {
>                  table xxx;
>                  import all;
>          };
>          interface "ens34";
> }
> protocol rip rip_xxx {
>          vrf "xxx";
>          ipv4 {
>                  import all;
>                  export all;
>                  table xxx;
>          };
>          interface "ens34" {
>                  metric 2;
>                  version 2;
>                  address 224.0.0.9;
>                  mode multicast;
>          };
> }
> 
> 
> bird> show rip neighbors
> rip_xxx:
> IP address                Interface  Metric Routes    Seen
> 
> bird> sh route table xxx
> Table xxx:
> 10.100.100.0/30      unicast [direct_xxx 2024-11-06 21:00:31] * (240)
>      dev ens34
> 
> root:# ip link show dev ens34
> 3: ens34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast 
> master xxx state UP mode DEFAULT group default qlen 1000
>      link/ether 00:0c:29:60:5f:76 brd ff:ff:ff:ff:ff:ff
> 
> root:# ip vrf show
> Name              Table
> -----------------------
> xxx            200
> 
> 
> 00:0c:29:60:5f:76 > 01:00:5e:00:00:09, ethertype IPv4 (0x0800), length 
> 86: (tos 0xc0, ttl 1, id 22904, offset 0, flags [none], proto UDP (17), 
> length 72)
>      10.100.100.2.520 > 224.0.0.9.520:
>      RIPv2, Response, length: 44, routes: 1 or less
>        AFI IPv4,    10.100.100.0/30, tag 0x0000, metric: 1, next-hop: self
> 
> 00:0c:29:21:ff:6e > 01:00:5e:00:00:09, ethertype IPv4 (0x0800), length 
> 66: (tos 0xc0, ttl 1, id 19130, offset 0, flags [none], proto UDP (17), 
> length 52)
>      10.100.100.1.520 > 224.0.0.9.520:
>      RIPv2, Response, length: 24, routes: 1 or less
>        AFI IPv4,     10.11.11.11/32, tag 0x0000, metric: 1, next-hop: self
> 
> 
> Thanks!