Command Line Reference Guide

Open Shortest Path First (OSPFv2 and OSPFv3) | 721
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.
After the reply is received and the new key is authenticated, you must delete the old key. Dell Force10
recommends keeping only one key per interface.
Version 8.3.5.0 Introduced on S55
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 8.3.5.0 Introduced on S55
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
Note: The MD5 secret is stored as plain text in the configuration file with service password
encryption.