Verifying Is-Is Nsf - Cisco RSP2 - Route Switch Processor 2 Installation And Configuration Manual

SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
Number of external LSA 0. Checksum Sum 0x0
Number of opaque AS LSA 0. Checksum Sum 0x0
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
External flood list length 0
Non-Stop Forwarding enabled, last NSF restart 00:02:06 ago (took 44 secs)
Area BACKBONE(0)
Number of interfaces in this area is 1 (0 loopback)
Area has no authentication
SPF algorithm executed 3 times

Verifying IS-IS NSF

To verify NSF for IS-IS, you must check that the NSF function is configured on the SSO-enabled
networking device. Perform the following steps:
Step 1 Verify that 'nsf' appears in the IS-IS configuration of the SSO-enabled device by entering the show
running-config command. The display will show either Cisco IS-IS or IETF IS-IS configuration. The
following display indicates that the device uses the Cisco implementation of IS-IS NSF:
Router# show running-config
router isis
nsf cisco
If the NSF configuration is set to cisco, use the show isis nsf command to verify that NSF is enabled on
Step 2
the device. Using the Cisco configuration, the display output will be different on the active and standby
RSPs. The following display shows sample output for the Cisco configuration on the active RSP. In this
example, note the presence of "NSF restart enabled":
router# show isis nsf
NSF is ENABLED, mode 'cisco'
RP is ACTIVE, standby ready, bulk sync complete
NSF interval timer expired (NSF restart enabled)
Checkpointing enabled, no errors
Local state:ACTIVE,
The following display shows sample output for the Cisco configuration on the standby RSP. In this
example, note the presence of "NSF restart enabled":
router# show isis nsf
NSF enabled, mode 'cisco'
RP is STANDBY, chkpt msg receive count:ADJ 2, LSP 7
NSF interval timer notification received (NSF restart enabled)
Checkpointing enabled, no errors
Local state:STANDBY HOT,
If the NSF configuration is set to ietf, enter the show isis nsf command to verify that NSF is enabled on
Step 3
the device. The following display shows sample output for the IETF IS-IS configuration on the
networking device:
router# show isis nsf
NSF is ENABLED, mode IETF
NSF pdb state:Inactive
NSF L1 active interfaces:0
NSF L1 active LSPs:0
NSF interfaces awaiting L1 CSNP:0
Awaiting L1 LSPs:
NSF L2 active interfaces:0
OL-4923-01 B0
Peer state:STANDBY HOT,
Peer state:ACTIVE,
Mode:SSO
Mode:SSO
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