WAN bridging - PPP question

From: Radoslav Vasilev (deckland@gmail.com)
Date: Mon Oct 16 2006 - 12:15:11 ART


Hi Group,

I recently came accros an IEWB lab involing WAN bridging over HDLC serial links:

R1 connects to R3 , which connects to R2

R3 was bridging its two HDLC links, so that R1 and R2 could have IP
addresses on the same subnet... The solution was straightforward -
using CRB on R3 and IRB with BVI interfaces on R1/R2 with the default
hdlc encapsulation everywhere.

My question is: How could bridging be done with PPP encapsulation
instead of HDLC in the exactly the same topology. I tried already of
course, but the same solution with PPP encapsulation is not working?

Thanks,
Rado

HDLC solution:
R1 & R2
int se0/1
 bridge-group 1
bridge irb
bridge 1 route ip
bridge 1 protocol ieee

int bvi 1
 ip addresss <same subnet>

R3:
int se 1/2
 bridge-group 2
int se 1/3
 bridge-group 2

bridge crb
bridge 2 protocol ieee



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