Hello FRR communities, I’m working on the following topology, it’s a simple experimental environment to learn how to configure route service with FRR. H1 - R1 - R2 - H2 Here is the IP information: H1: 192.168.10.1/24 H2: 192.168.20.1/24 R1: 192.168.10.254/24 & 192.168.30.1/24 R2: 192.168.20.254/24 & 192.168.30.2/24 And for the R1 and R2 was in separate AS, configuration as below: R1: router bgp 7675 bgp router-id 192.168.30.1 neighbor 192.168.30.2 remote-as 7676 ! address-family ipv4 unicast network 192.168.10.0/24 exit-address-family R2: router bgp 7676 bgp router-id 192.168.30.2 neighbor 192.168.30.1 remote-as 7675 ! address-family ipv4 unicast network 192.168.20.0/24 exit-address-family --- However, R1 didn’t get the “192.168.20.0/24” route, and R2 didn’t get the “192.168.10.0/24” route. So I decided to dig the debug info deeper. Here is some information I got: R1 # show ip route K>* 0.0.0.0/0 [0/0] via <my_public_gw>, enp8s0, 01:07:41 C>* <my_public_ip>/26 is directly connected, enp8s0, 01:07:41 K>* 192.168.10.0/24 [0/0] is directly connected, veth2, 00:23:10 C>* 192.168.30.0/24 is directly connected, veth0, 00:40:32 R1 # show ip bgp 192.168.10.0 BGP routing table entry for 192.168.10.0/24 Paths: (1 available, best #1, table default) Not advertised to any peer Local 0.0.0.0 from 0.0.0.0 (192.168.30.1) Origin IGP, metric 0, weight 32768, valid, sourced, local, best (First path received) Last update: Thu Sep 17 06:30:46 2020
R2 # show ip route C>* 192.168.20.0/24 is directly connected, veth1000, 00:41:39 C>* 192.168.30.0/24 is directly connected, veth1, 00:41:41 R2 # show ip bgp 192.168.20.0/24 BGP routing table entry for 192.168.20.0/24 Paths: (1 available, best #1, table default) Not advertised to any peer Local 0.0.0.0 from 0.0.0.0 (192.168.30.2) Origin IGP, metric 0, weight 32768, valid, sourced, local, best (First path received) Last update: Thu Sep 17 06:57:55 2020 ///// What I noticed is the “Not advertised to any peer”, and I can’t figure out why. Appreciated to any help and advise, please let me know if you need further information. Thank you guys. --- Best regards, Wei-Yu Chen