Users Guide

ip ospf dead-interval
Sets the time interval since the last hello-packet was received from a router. After the interval elapses, the neighboring routers
declare the router dead.
Syntax
ip ospf dead-interval seconds
Parameters seconds — Enter the dead interval value in seconds, from 1 to 65535.
Default 40 seconds
Command Mode INTERFACE
Usage
Information
The dead interval is four times the default hello-interval by default. The no version of this command
resets the value to the default.
Example
OS10(conf-if-vl-10)# ip ospf dead-interval 10
Supported
Releases
10.2.0E or later
ip ospf hello-interval
Sets the time interval between the hello packets sent on the interface.
Syntax
ip ospf hello-interval seconds
Parameters seconds — Enter the hello-interval value in seconds, from 1 to 65535.
Default 10 seconds
Command Mode INTERFACE
Usage
Information
All routers in a network must have the same hello time interval between the hello packets. The no version
of the this command resets the value to the default.
NOTE: When you configure hello-interval for OSPF, the OSPF dead-interval value is implicitly set to
a value four times greater than the hello-interval value.
Example
OS10(conf-if-vl-10)# ip ospf hello-interval 30
Supported
Releases
10.2.0E or later
ip ospf message-digest-key
Enables OSPF MD5 authentication and sends an OSPF message digest key on the interface.
Syntax
ip ospf message-digest-key keyid md5 key
Parameters
● keyid — Enter an MD5 key ID for the interface, from 1 to 255.
● key — Enter a character string as the password. A maximum of 16 characters.
Defaults Not configured
Command Mode INTERFACE
Usage
Information
All neighboring routers in the same network must use the same key value to exchange OSPF information.
The no version of this command deletes the authentication key.
Example
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ip ospf message-digest-key 2 md5 sample12345
Supported
Releases
10.3.0E or later
952 Layer 3