[j-nsp] Multiple lo0 address or how to backup layer2 services

[George Yalamov]

Hello ,


I have a question about  loopback addresses. Can I have multiple 
loopback addresses with different IGP metrics. I'm wonderryng, because I 
want to protect layer 2 service (martini tunnel for example).

Imagine something like that:
	      _______
	      |     |
	------|PE1  |-----> MPLS Cloud
	|     |_____|
	|	
Ethernet
Layer2 domain
	|     _______
	|     |     |
	------|PE2  |-----> MPLS Cloud
	      |_____|


I terminate customer l2circuit on PE1 I have vc represent  with lo0 "X" 
  address and virtual-circuit-id. If PE1 router fails ,L2 domain will 
terminate my customer VLAN on PE2. On PE2 I have the same config for 
that service but the source  ot the circuit is with PE2,s loopback (lo0 
"Y").

If I have on PE2 second loopback address "X" with worst IS-IS metric it 
will rise in the routing table because PE1 is dead. It' sounds good but 
PE2 still originate this vc with its lo "Y" address.
I didn't find a way to originate LSP with different addresses.

Anyone has any idea or some different way to do l2 service backup via mpls?

Thanks,
George