Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 1178

Usage Information Related Commands The time interval between the hello packets must be the same for routers in a network. ip ospf dead-interval - sets the time interval before a router is declared dead. ip ospf message-digest-key Enable OSPF MD5 authentication and send an OSPF message digest key on the interface. C9000 Series Syntax Parameters ip ospf message-digest-key keyid md5 key To delete a key, use the no ip ospf message-digest-key keyid command. keyid key Enter a number as the key ID. The range is from 1 to 255. Enter a continuous character string as the password. Defaults No MD5 authentication is configured. Command Modes INTERFACE Command History This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide. The following is a list of the Dell Networking OS version history for this command. Version Description 9.9(0.0) 9.2(1.0) 8.3.19.0 9.1(0.0) 8.3.11.1 8.3.7.0 7.6.1.0 7.5.1.0 6.1.1.1 Introduced on the C9010. Introduced on the Z9500. Introduced on the S4820T. Included usage information on maximum number of digest keys per interface. Introduced on the Z9000. Introduced on the S4810. Introduced on the S-Series. Introduced on the C-Series. Introduced on the E-Series. Usage Information You can configure a maximum of six digest keys on an interface. Of the available six digest keys, the switches select the MD5 key that is common. The remaining MD5 keys are unused. To change to a different key on the interface, enable the new key while the old key is still enabled. The system sends 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, delete the old key. Dell recommends keeping only one key per interface. NOTE: The MD5 secret is stored as plain text in the configuration file with service password encryption. Write down or otherwise record the key. You cannot learn the key once it is configured. Use caution when changing the key. 1178 Open Shortest Path First (OSPFv2 and OSPFv3)