Can't reach BGP propagated networks

[Dan74]

Hi all,

My goal is to be able to ping any of the loopback networks from any of the routers. Each router is in it's own AS and set as a neighbor of Router1. I can ping between Router0 and Router1 and between Router1 and Router2, but I can't go all the way from Router0 to Router2.

Any advice would be greatly appreciated!

[Harold Ritter]

Make sure you the loopback interface address as the source for the ping. By default, the outgoing interface address will be used as the source and this address is not propagated in BGP, therefore unreachable from Router2.

Router0#ping 4.4.4.4 source lo0

Regards,

[Dan74 · Accepted solution]

Thanks Harold. It turns out that my configs were working just fine, but I wasn't specifying the source of the ping when pinging across. Since I didn't want to go through all the ping options to specify the source, I ended up adding "redistribute connected" to the middle router.

[3Dg4RIP]

Hi Dan, yes you need use the command "redistribute connected" also in some scenarios is requiered some static routes and their redistribution. You are using BGP for Lab and Test or is a real application? You can use OSPF and use redistribution.