Solved adapting the configuration help found at the following link: https://gitlab.labs.nic.cz/labs/bird/wikis/BGP_filtering This is an excellent configuration explanation, but without figures of the network it's a little bit tricky to read, if possible I may suggest to update the guide with a figure of the network and a figure of the message exchange propagation (clients to everyone and peers to clients ecc) The first time I tried to implement the code of the guide I got an error in a function because it seems that the name "asn" is reserved, when I tried to start a node with "asn" like parameter of the function I got a syntax error. Solved swapping "asn" with another name. Thanks, Mattia Il giorno ven 28 giu 2019 alle ore 18:42 Mattia Milani < mattia.milani@studenti.unitn.it> ha scritto:
Hello bird community, I have a little problem with some configuration files in Bird 2.0
The protocol I use is BGP
I have a star network with 5 nodes, one in the center with the 4 edges. It's something like this (I'm not sure you will see it correctly):
H1 | H2--H0--H3 | H4
Now H1,H2,H3, and H4 will share a network, a basic /24 network, and H0 should share them with these rules: If the network comes from H2 I share it with H1 and the opposite If the network comes from H3 I share it with H4 and the opposite
For this reason, I created this configuration for the H1-H0 link:
protocol bgp h_0_h_1 { local 10.0.0.1 as 1; neighbor 10.0.0.2 as 2; ipv4{ import filter bgp_in; export where proto = "h_0_h_2"; }; direct; }
Obviously, the protocol "h_0_h_2" is the protocol between H0 and H2 that is the same with little differences in addresses and in the export, where proto = "h_0_h_1".
I don't think this is the correct way to handle this situation, could you please suggest any other configurations?
Thanks a lot for the help, Mattia
-- Mattia Milani
-- Mattia Milani