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Routing

what cause of duplicate lsa-id in ospf as CE-PE with sham-link

[ Edited ]
‎01-26-2014 08:15 AM

root@XXX> show ospf database instance YYY

OSPF database, Area 0.0.0.0
Type ID Adv Rtr Seq Age Opt Cksum Len
Router *3.3.1.1 3.3.1.1 0x80000006 455 0x22 0x43ff 60
Router 7.7.1.1 7.7.1.1 0x80000008 458 0x22 0xdd56 60
Router 10.80.32.6 10.80.32.6 0x8000000d 40 0x22 0x7c5f 60
Router 10.80.32.8 10.80.32.8 0x80000008 147 0x22 0x8756 60
Summary 7.1.1.1 10.80.32.6 0x80000008 457 0xa2 0x9f8a 28
Summary 7.1.1.1 10.80.32.8 0x80000004 456 0xa2 0x9b90 28
Summary 7.1.1.2 10.80.32.6 0x80000008 457 0xa2 0x9593 28
Summary 7.1.1.2 10.80.32.8 0x80000004 456 0xa2 0x9199 28
Summary 8.8.8.1 10.80.32.6 0x80000008 457 0xa2 0xd2e4 28
Summary 8.8.8.1 10.80.32.8 0x80000005 456 0xa2 0xcceb 28
Summary 8.8.8.2 10.80.32.6 0x80000008 457 0xa2 0xc8ed 28
Summary 8.8.8.2 10.80.32.8 0x80000005 456 0xa2 0xc2f4 28
Summary 8.8.8.3 10.80.32.6 0x80000008 457 0xa2 0xbef6 28
Summary 8.8.8.3 10.80.32.8 0x80000004 456 0xa2 0xbafc 28
Summary 8.8.8.4 10.80.32.6 0x80000008 457 0xa2 0xb4ff 28
Summary 8.8.8.4 10.80.32.8 0x80000004 456 0xa2 0xb006 28
Summary 8.8.8.5 10.80.32.6 0x80000008 457 0xa2 0xaa09 28
Summary 8.8.8.5 10.80.32.8 0x80000004 456 0xa2 0xa60f 28
Summary 8.8.8.6 10.80.32.6 0x80000007 457 0xa2 0xa211 28
Summary 8.8.8.6 10.80.32.8 0x80000004 456 0xa2 0x9c18 28
Summary 8.8.8.7 10.80.32.6 0x80000007 457 0xa2 0x981a 28
Summary 8.8.8.7 10.80.32.8 0x80000004 456 0xa2 0x9221 28
Summary 8.8.8.8 10.80.32.6 0x80000007 457 0xa2 0x8e23 28
Summary 8.8.8.8 10.80.32.8 0x80000004 456 0xa2 0x882a 28
OSPF AS SCOPE link state database
Type ID Adv Rtr Seq Age Opt Cksum Len
Extern 10.80.10.40 10.80.32.8 0x80000004 456 0xa2 0x84bd 36
Extern 10.80.32.6 10.80.32.8 0x80000003 456 0xa2 0xfa51 36
Extern 10.80.32.8 10.80.32.6 0x80000003 457 0xa2 0xf259 36
Extern 10.80.32.24 10.80.32.8 0x80000004 456 0xa2 0x44f4 36
Extern 10.95.178.144 10.80.32.8 0x80000004 456 0xa2 0x7ca5 36

 

 

root@XXX> ...ance YYY lsa-id 8.8.8.1 extensive

OSPF database, Area 0.0.0.0
Type ID Adv Rtr Seq Age Opt Cksum Len
Summary 8.8.8.1 10.80.32.6 0x80000008 502 0xa2 0xd2e4 28
mask 255.255.255.255
Topology default (ID 0) -> Metric: 100
Aging timer 00:51:38
Installed 00:08:20 ago, expires in 00:51:38, sent 00:08:20 ago
Last changed 00:08:20 ago, Change count: 2
Summary 8.8.8.1 10.80.32.8 0x80000005 501 0xa2 0xcceb 28
mask 255.255.255.255
Topology default (ID 0) -> Metric: 100
Aging timer 00:51:39
Installed 00:08:20 ago, expires in 00:51:39, sent 00:08:20 ago
Last changed 00:08:20 ago, Change count: 2

 

 

 

question ? 

It is normal operation  when using ospf sham-link each PE will regenerate lsa with own adv-router-id  ?

junos implement loop prevention with dn bit and vpn tag in ospf with MPLSVPN environment ?

 

 

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