Reference Guide

1024 | Open Shortest Path First (OSPFv2 and OSPFv3)
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ip ospf hello-interval
c e s
Specify the time interval between the hello packets sent on the interface.
Syntax
ip ospf hello-interval seconds
To return to the default value, enter no ip ospf hello-interval.
Parameters
Defaults
10 seconds
Command Modes
INTERFACE
Command
History
Usage
Information
The time interval between hello packets must be the same for routers in a network.
Related
Commands
ip ospf message-digest-key
c e s
Enable OSPF MD5 authentication and send an OSPF message digest key on the interface.
Syntax
ip ospf message-digest-key keyid md5 key
To delete a key, use the no ip ospf message-digest-key keyid command.
Parameters
Defaults
No MD5 authentication is configured.
Command Modes
INTERFACE
Command
History
Usage
Information
To change to a different key on the interface, enable the new key while the old key is still enabled. The
FTOS will send two packets: the first packet authenticated with the old key, and the second packet
authenticated with the new key. This process ensures that the neighbors learn the new key and
communication is not disrupted by keeping the old key enabled.
seconds
Enter a the number of second as the delay between hello packets.
Range: 1 to 65535.
Default: 10 seconds.
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.1 Introduced on E-Series
ip ospf dead-interval Set the time interval before a router is declared dead.
keyid
Enter a number as the key ID.
Range: 1 to 255.
key
Enter a continuous character string as the password.
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.1 Introduced on E-Series