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Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
OL-27852-01
Chapter Unicast Routing Commands
timers nsf route-hold
timers nsf route-hold
To set the timer that determines how long an NSF-aware Enhanced Interior Gateway Routing Protocol
(EIGRP) router holds routes for an inactive peer, use the
timers nsf route-hold
command. To return the
route hold timer to the default value, use the
no
form of this command.
timers nsf route-hold
seconds
no timers nsf route-hold
Syntax Description
Command Default
EIGRP NSF awareness is enabled.
seconds
:
240
Command Modes
Address family configuration mode
Router configuration mode
Router VRF configuration mode
Command History
Usage Guidelines
Use this command to set the maximum period of time that the NSF-aware router holds known routes for
an NSF-capable neighbor during a switchover operation or a well-known failure condition. The route
hold timer is configurable so that you can tune network performance and avoid undesired effects, such
as “black holing” routes (advertising invalid routes) if the switchover operation takes too much time.
When this timer expires, the NSF-aware router scans the topology table and discards any stale routes,
allowing EIGRP peers to find alternate routes instead of waiting during a long switchover operation.
This command requires the LAN Enterprise Services license.
Examples
This example shows how to set the route hold timer value for an NSF-aware router to 2 minutes (120
seconds):
switch#
configure terminal
switch(config)#
router eigrp 1
switch(config-router)
address-family ipv4 unicast
switch(config-router-af)#
timers nsf route-hold 120
switch(config-router-af)#
seconds
Time, in seconds, that EIGRP holds routes for an inactive peer. The range
is from 20 to 300 seconds. The default is 240.
Release
Modification
5.0(3)A1(1)
This command was introduced.
