1. Home
  2. Cisco Systems
  3. BGP next-hop-self

BGP next-hop-self

Hi

I hava a question about BGP next-hop-self. There is a topology below.

R1------------R2--------------R3 (AS100) (AS100) (AS200) 30.1.1.1 30.2.2.2 30.3.3.3

R1 and R2 have AS100 , R3 has AS200. R1,R2 and R3 interfaces are set in OSPF.

30.1.1.1 30.2.2.2 30.3.3.3 are not in OSPF, but those are advertised from R3 in BGP.

R1 can see 30.1.1.1 30.2.2.2 30.3.3.3 in BGP but R1 cannot ping those.

next, "neighbor R1 next-hop-self" is set on R2, R1 can ping those.

I think that next-hop-self is no need since R1 can see those routes.

Please anyone can say the advise if i mistake something about it.

Thanks.

Reply to
COM3
Loading thread data ...

1) R1 needs a valid route to the next-hop-address, and 2) because 30.1.1.1, 30.2.2.2, and 30.3.3.3 are not in R1's OSPF, R1 requires the command "no synch" under bgp.
Reply to
John Agosta

Cabling-Design.com Forums website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.