Number of external LSA 0. Checksum Sum 00000000
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Graceful Restart enabled, last GR 11:12:26 ago (took 6 secs)
Area BACKBONE(0)
Number of interfaces in this area is 1
SPF algorithm executed 1 times
Number of LSA 6. Checksum Sum 0x0268a7
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0
Displaying Graceful Restart Information for an OSPFv3 Instance
The following screen output shows the link state for an OSPFv3 instance:
RP/0/RP0/CPU0:router# show ospfv3 1 database grace
OSPFv3 Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
ADV Router Age Seq# Fragment ID Link count Bits
1.1.1.1 1949 0x8000000e 0 1
None
2.2.2.2 2007 0x80000011 0 1
None
Link (Type-8) Link States (Area 0)
ADV Router Age Seq# Link ID Interface
1.1.1.1 180 0x80000006 1 PO0/2/0/0
2.2.2.2 2007 0x80000006 1 PO0/2/0/0
Intra Area Prefix Link States (Area 0)
ADV Router Age Seq# Link ID Ref-lstype Ref-LSID
1.1.1.1 180 0x80000006 0 0x2001 0
2.2.2.2 2007 0x80000006 0 0x2001 0
Grace (Type-11) Link States (Area 0)
ADV Router Age Seq# Link ID Interface
2.2.2.2 2007 0x80000005 1 PO0/2/0/0
Enabling Nonstop Routing for OSPFv2
This optional task describes how to enable nonstop routing (NSR) for OSPFv2 process. NSR is disabled by
default. When NSR is enabled, OSPF process on the active RP synchronizes all necessary data and states with
the OSPF process on the standby RP. When the switchover happens, OSPF process on the newly active RP
has all the necessary data and states to continue running and does not require any help from its neighbors.
Step 1 configure
Enter the global configuration mode.
Step 2 router ospf instance-id
Example:
RP/0/RP0/CPU0:router(config)# router ospf isp
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
309
Implementing OSPF
Enabling Nonstop Routing for OSPFv2
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