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Route Switch Processor (RSP8) Installation and Configuration Guide
OL-4920-02
Enabling High Availability Features
Verifying OSPF NSF
To verify NSF for OSPF, you must check that the NSF function is configured on the SSO-enabled
networking device. Perform the following steps:
Step1 Verify that “nsf” appears in the OSPF configuration of the SSO-enabled device by entering theshow
running-config command:
Router# show running-config
router ospf 120
log-adjacency-changes
nsf
network 192.168.20.0 0.0.0.255 area 0
network 192.168.30.0 0.0.0.255 area 1
network 192.168.40.0 0.0.0.255 area 2
Step2 Use the show ip ospf command to verify that NSF is enabled on the device:
Router> show ip ospf
Routing Process "ospf 1" with ID 192.168.2.1 and Domain ID 0.0.0.1
Supports only single TOS(TOS0) routes
Supports opaque LSA
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:
Step1 Verify that “nsf” appears in the IS-IS configuration of the SSO-enabled device by entering theshow
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
Step2 Ifthe NSF configuration is set to cisco, use the show isis nsf command to verify that NSF is enabled on
thedevice. 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'