Cisco Cisco IOS Software Release 12.4(6)T

DOI—Domain of Interpretation. For Internet Security Association Key Management Protocol 
(ISAKMP), a value in the security association (SA) payload that describes in which context the key 
management message is being sent (IPsec or Group Domain of Interpretation).

GDOI—Group Domain of Interpretation. For ISAKMP, a means of distributing and managing keys for 
groups of mutually trusted systems.

group member—Device (Cisco IOS router) that registers with a group that is controlled by the key 
server for purposes of communicating with other group members.

group security association—SA that is shared by all group members in a group.

IPsec—IP security. Data encryption protocol for IP packets that are defined in a set of RFCs (see IETF 
RFC 2401).

ISAKMP—Internet Security Association and Key Management Protocol. Protocol that provides a 
framework for cryptographic key management protocols.

key encryption key. Key used to protect the rekey between the key server and group members.

key server—A device (Cisco IOS router) that distributes keys and policies to group members.

SA—security association. SA that is shared by all group members in a group.

traffic encryption key. Key that is used to protect the rekey between group members.

See 

 for terms not included in this glossary.

 lists the release history for this feature.

Not all commands may be available in your Cisco IOS software release. For release information about a 
specific command, see the command reference documentation.

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 lists only the Cisco IOS software release that introduced support for a given feature in a given 

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