[GROW] BGP Monitoring Protocol

["UTTARO, JAMES, ATTLABS" <uttaro at att.com>]

"o  Peer Distinguisher (8 bytes): Routers today can have multiple
      instances (example L3VPNs).  This field is present to distinguish
      peers that belong to one address domain from the other.

      If the peer is a "Global Instance Peer", this field is zero
      filled.  If the peer is a "L3VPN Instance Peer", it is set to the
      route distinguisher of the particular L3VPN instance that the peer
      belongs to."

 

I was a bit confused about the "L3VPN Instance Peer". What does it mean to set the Peer Distinguisher to the Route Distinguisher of the L3VPN instance that the peer belongs to? Are you assuming that the RD is different for every instantiation of the VPN on each PE? It is possible that the same RD is used across all PEs that a VPN belongs to.

 

Jim Uttaro