OSPF Domain-id

From: Bilal Hansrod <bilal.hansrod_at_gmail.com>
Date: Sun, 19 Jun 2011 00:45:43 +1000

Hello Experts,

I have simple MPLS topology running OSPF betwen CE-PE and MP-BGP. When I
change domain-id on PE, I can't see the change in real domain-id by running
show bgp vpnv4 unicast vrf VPN_A 172.16.8.0, but still the OSPF route type
changes to E2.

C1 - PE1 - RR - PE2 - C2

Both C routers running OSPF between PE with same OSPF process number.

The command output as below:

PE1

Rack1R6#show bgp vpnv4 unicast vrf VPN_A 172.16.8.0
BGP routing table entry for 100:1:172.16.0.0/16, version 57
Paths: (1 available, best #1, table VPN_A)
  Not advertised to any peer
  Local
    150.1.5.5 (metric 66) from 150.1.4.4 (150.1.4.4)
      Origin incomplete, metric 2, localpref 100, valid, internal, best
      Extended Community: RT:100:1 OSPF DOMAIN ID:0x0005:0x000000630200
        OSPF RT:0.0.0.0:2:0 OSPF ROUTER ID:172.16.5.5:0
      Originator: 150.1.5.5, Cluster list: 150.1.4.4
      mpls labels in/out nolabel/29

Configuration:
router ospf 10 vrf VPN_A
 domain-id 0.0.0.11
 log-adjacency-changes
 redistribute bgp 100 subnets tag 666
 network 0.0.0.0 255.255.255.255 area 1

PE2

ack1R5#show bgp vpnv4 unicast vrf VPN_A 172.16.8.0
BGP routing table entry for 100:1:172.16.0.0/16, version 37
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
        1
  Local
    0.0.0.0 from 0.0.0.0 (150.1.5.5)
      Origin incomplete, metric 2, localpref 100, weight 32768, valid,
sourced, best
      Extended Community: RT:100:1 OSPF DOMAIN ID:0x0005:0x000000630200
        OSPF RT:0.0.0.0:2:0 OSPF ROUTER ID:172.16.5.5:0
      mpls labels in/out 29/aggregate(VPN_A)

router ospf 10 vrf VPN_A
 domain-id 0.0.0.99
 log-adjacency-changes
 summary-address 172.16.0.0 255.255.0.0
 redistribute bgp 100 subnets tag 667
 network 0.0.0.0 255.255.255.255 area 1

Should I not be seeing different domain-id for this route; however, both of
them shows 63- When I see routes on C routes it changes to E2 and when I
remove the domain-id's, I see routes as IA.

Any help will be highly appreciated.

Thanks,

Bilal Hansrod

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Received on Sun Jun 19 2011 - 00:45:43 ART

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