Ip Ospf Dead-Interval - Cisco Nexus 3548 Command Reference Manual

Chapter Unicast Routing Commands

ip ospf dead-interval

To set the interval during which at least one hello packet must be received from a neighbor before the
router declares that neighbor as down, use the ip ospf dead-interval command. To restore the default,
use the no form of this command.
Syntax Description
seconds
Command Default The default for seconds is four times the interval set by the ip ospf hello-interval command.
Command Modes
Interface configuration mode
Command History Release
5.0(3)A1(1)
Usage Guidelines The dead interval value must be the same for all networking devices on a specific network.
Configure a shorter dead interval to detect down neighbors faster and improve convergence. Very short
dead intervals could cause routing instability.
Use the show ip ospf interface command to verify the dead interval and hello interval.
This command requires the LAN Base Services license.
Examples
This example shows how to set the OSPF dead interval to 20 seconds:
switch# configure terminal
switch(config)# interface ethernet 1/2
switch(config-if)# no switchport
switch(config-if)# ip ospf dead-interval 20
switch(config-if)#
Related Commands Command
ip ospf hello-interval
show ip ospf interface
OL-27852-01
ip ospf dead-interval seconds
no ip ospf dead-interval
Interval (in seconds) during which the router must receive at least one hello
packet from a neighbor or that neighbor adjacency is removed from the local
router and does not participate in routing. The range is from 1 to 65535, and
the default is 40. The value must be the same for all nodes on the network.
Modification
This command was introduced.
Description
Specifies the interval between hello packets that OSPF sends on the
interface.
Displays OSPF interface-related information.
Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
ip ospf dead-interval
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