I'm not sure if this is possible, but maybe someone can give me some
input on how to best achieve this.
I'm labbing EoMPLS using 4x 7206 VXR. I'd like to create a fully
redundant pseudowire (from the provider persective).
The idea is to put two PE routers at each end of the pseudowire (with
a common VLAN at each end shared through a switch), so that I can
fully lose a PE router and the VC still stays up.
The topology looks like this:
[PE1] [PE3]
CE1 --- [SW1] ---< > [MPLS CLOUD] < >--- [SW2] --- CE2
[PE2] [PE4]
I've tried a number of ways using xconnect-peers and backup peers (per
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fspseudo.html
), and it works great when I only have redundancy on one end, but as
soon as I add the 4th PE, nothing works anymore.
When I add the 4th PE router, PE1 forms a VC with PE3, and PE2 forms a
VC with PE4, when in reality I should only ever have one VC formed at
any given time, and PE2 should never form a VC with PE4 until PE1 or
PE3 goes down.
Does anyone have any suggested configurations?
Regards,
GG