Hi, 

We are using I-BGP between our RS for redundancy. 
Not every peer has a session with both RS, or some of them choose
to keep only one session open at a time, so if we want to make sure 
every prefixes are propagated to every peer, we need to exchange route
between the 2 RS.

Regards, 
Noémie 

On 14/12/2018 23:16, Alarig Le Lay wrote: