cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements
253
Views
5
Helpful
3
Replies
Beginner

Can't reach BGP propagated networks

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!

 

Screen Shot 2019-05-05 at 21.50.45.pngScreen Shot 2019-05-05 at 21.58.00.png

Everyone's tags (2)
1 ACCEPTED SOLUTION

Accepted Solutions
Beginner

Re: Can't reach BGP propagated networks

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.

3 REPLIES 3
Cisco Employee

Re: Can't reach BGP propagated networks

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,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Beginner

Re: Can't reach BGP propagated networks

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.

Highlighted
Beginner

Re: Can't reach BGP propagated networks

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.

CreatePlease to create content
Content for Community-Ad
July's Community Spotlight Awards