Configure EBGP or IBGP Multihop between PE and CE Routers

You can configure an external BGP (EBGP) or internal BGP (IBGP) multihop session between the PE and CE routers of a Layer 3 VPN. This allows you to have one or more routers between the PE and CE routers. Using IBGP between PE and CE routers does not require the configuration of any additional statements. However, using EBGP between the PE and CE routers requires the configuration of the multihop statement.

To configure an external BGP multihop session for the connection between the PE and CE routers, include the multihop statement at the [edit routing-instances routing-instance-name protocols bgp], [edit routing-instances routing-instance-name protocols bgp group group-name], or [edit routing-instances routing-instance-name protocols bgp group group-name neighbor address] hierarchy level:

multihop <ttl-value>;