Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 721

Command Modes INTERFACE Command History Version 8.3.5.0 Version 7.6.1.0 Version 7.5.1.0 pre-Version 6.1.1.1 Introduced on S55 Introduced on S-Series Introduced on C-Series Introduced on E-Series Usage The time interval between hello packets must be the same for routers in a network. Information Related Commands ip ospf dead-interval Set the time interval before a router is declared dead. 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 keyid key Enter a number as the key ID. Range: 1 to 255. Enter a continuous character string as the password. Defaults No MD5 authentication is configured. Command Modes INTERFACE Command History Version 8.3.5.0 Version 7.6.1.0 Version 7.5.1.0 pre-Version 6.1.1.1 Introduced on S55 Introduced on S-Series Introduced on C-Series Introduced on E-Series 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. Note: The MD5 secret is stored as plain text in the configuration file with service password encryption. Open Shortest Path First (OSPFv2 and OSPFv3) | 721