Nsf - Cisco Catalyst 3560-X Command Reference Manual

Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands

nsf

Note
Syntax Description
Defaults
Command Modes
Command History
Usage Guidelines
Examples
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Use the nsf router configuration command on a switch stack or standalone switch to enable and configure
Cisco nonstop forwarding (NSF) for Open Shortest Path First (OSPF) or Enhanced Interior Gateway
Routing Protocol (EIGRP) routing. Use the no form of this command to disable NSF.
nsf [enforce global]
no nsf
This command is not supported on switches running the LAN base feature set.
enforce global
NSF is disabled.
The enforce global option is enabled (OSPF only).
Router configuration (OSPF or EIGRP)
Release
12.2(53)SE2
The nsf command is a router configuration command and affects all interfaces that are covered by the
designated routing process. The switch supports Cisco NSF for OSPF and EIGRP protocols.
When NSF is enabled and a stack master switchover is detected, the NSF-capable routers rebuild routing
information from NSF-aware or NSF-capable neighbors and do not wait for a restart.
This example shows how to enable OSPF NSF:
Switch(config)# router ospf 100
Switch(config-router)# nsf
Use the show ip ospf privileged EXEC command to verify that OSPF NSF is enabled.
This example shows how to enable EIGRP NSF:
Switch(config)# router eigrp 1
Switch(config-router)# nsf
Use the show ip protocols privileged EXEC command to verify that EIGRP NSF is enabled.
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(Optional) Cancel OSPF NSF restart when non-NSF-aware neighbors are
detected. These keywords are visible only in OSPF router configuration
mode.
Modification
This command was introduced.
Catalyst 3750-X and 3560-X Switch Command Reference
nsf
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