[j-nsp] IBGP via EBGP Default

[Christopher Costa]

We observe on EX and QFX platforms that their IBGP session is
maintained (and reestablishes when bouncing the session) when the
interconnect between them goes down; following an EBGP learned default
route to reach the peer address.  Juniper says this is expected
behavior, although my understanding is that the IBGP session should
not be maintained when the underlying route is known via EBGP.  Am I
mistaken about that?

Thanks