ServerNet Cluster Manual

ServerNet Cluster Description
ServerNet Cluster Manual—520575-003
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Expand
The Expand subsystem supports a variety of protocols and communications methods
to enable you to connect systems in local area network (LAN) and wide area network
(WAN) topologies. Expand-over-FOX and Expand-over-ATM are two examples of
communications methods.
Expand-Over-ServerNet Line-Handler Processes
Expand-over-ServerNet is a communications medium for the Network Access Method
(NAM). When you add a node to a ServerNet cluster, you must add an Expand-over-
ServerNet line-handler process for the new node in every other system in the cluster,
as well as a line-handler process in the new node for every other node in the cluster.
Thus, in a four-node ServerNet cluster, each node has three Expand-over-ServerNet
line-handler processes.
The OSM Add Node to ServerNet Cluster and the TSM Configure ServerNet Node
guided procedures assist you in configuring and starting the line-handler processes.
Figure 1-20 shows the Expand-over-ServerNet line-handler processes for a four-node
ServerNet cluster. The line-handler processes follow the naming convention used by
the guided procedure.