Verifying Is-Is Nsf - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 13 Configuring Cisco NSF with SSO Supervisor Engine Redundancy

Verifying IS-IS NSF

To verify IS-IS NSF, you must check that the NSF function is configured on the SSO-enabled networking
device. To verify IS-IS NSF, follow these steps:
Verify that "nsf" appears in the IS-IS configuration of the SSO-enabled device by entering the
Step 1
show running-config command. The display shows either the Cisco IS-IS or the IETF IS-IS
configuration. The following display indicates that the device uses the Cisco implementation of IS-IS
NSF:
Switch# show running-config
<...Output Truncated...>
router isis
nsf cisco
<...Output Truncated...>
Step 2 If the NSF configuration is set to cisco, enter the show isis nsf command to verify that NSF is enabled
on the device. Using the Cisco configuration, the display output differs on the active and redundant RPs.
The following display shows sample output for the Cisco configuration on the active RP. In this example,
note the presence of "NSF restart enabled":
Switch# 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 RP. In this
example, note the presence of "NSF restart enabled":
Switch# 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:
Switch# 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
NSF L2 active LSPs:0
NSF interfaces awaiting L2 CSNP:0
Awaiting L2 LSPs:
Interface:Serial3/0/2
Peer state:STANDBY HOT,
Peer state:ACTIVE,
NSF L1 Restart state:Running
NSF p2p Restart retransmissions:0
Maximum L1 NSF Restart retransmissions:3
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Configuring NSF with SSO Supervisor Engine Redundancy
Mode:SSO
Mode:SSO
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