ASAI Maintenance Capabilities
■The link is now in the “layer 3 restarted” state. If the adjunct then sends a heartbeat, the ECS will respond with a heartbeat ACK. At that point, the link will go into the “layer 3 established” state.
5.
■The ECS makes a Restart Request, listing the link versions that it supports.
■The adjunct responds with a Restart ACK, choosing a link version which is not supported on the ECS.
■The ECS ignores the Restart ACK. The link remains in the “layer 3 restarting” state. When a
6.
■The adjunct makes a Restart Request, listing the link versions that it supports.
■The ECS ignores Restart Request. (The ECS may terminate all the active associations at this time.) The link remains in the state that it was in when the restart was requested. The adjunct does not receive a Restart ACK.
7.Adjunct-initiated restart - many associations active
■The adjunct makes a Restart Request, listing the link versions that it supports.
■The ECS needs additional time to initialize data associated with the active associations. Once that is done, the ECS makes a Restart Request, listing the link versions that it supports.
■The adjunct responds with a Restart ACK, choosing one of the supported versions.
■The link is now in the “layer 3 established” state, and the link version is set the chosen version. The ECS then sends a heartbeat. If the adjunct ACKs the heartbeat, the link will go into the “layer 3 established” state. This is the state in which the link is operational. (See ‘‘Heartbeat’’ on page
