From ImageStream Router Documentation
Peer can not establish a session with my router
Common configuration errors
- Is the IP address for failed peer correct?
- Is the Router ID set correctly? It should be an IP address assigned on the router.
- How many hops away is the peer? Default setting requires a peer to be adjacent.
- Does the router have any firewall rules blocking BGP traffic? This is particularly relevent if you've hardened the router.