Expand Configuration and Management Manual (G06.24+)

Expand Configuration and Management Manual—523347-008
4-1
4
Planning for ServerNet Clusters
This section describes how to plan for the configuration of Expand over ServerNet
clusters, discusses considerations for ServerNet topologies, and provides examples of
configuring Expand over ServerNet clusters, ServerNet clusters in combination with
ServerNet/FX, ServerNet clusters in combination with ATM and IP networks, and
ServerNet clusters with other communication methods.
You can configure Expand over ServerNet clusters by using either OSM or SCF. The
ServerNet Cluster Manual (for the 6770 cluster switch) and the ServerNet Cluster 6780
Planning and Installation Guide provide procedures for configuring Expand over
ServerNet clusters and information about recommended ServerNet cluster topology
configurations.
This section refers to the network control process ($NCP). $NCP initiates and
terminates node-to-node connections, maintains routing information, selects the best-
path route for data transmission to other nodes in the network, and monitor and logs
changes in the status of the network and its nodes. See Section 6, Configuring the
Network Control Process, for more information.
This section does not address every possible topology or identify every process that
must be running on each system. For additional information, refer to the following
manuals:
The topics described in this section include:
•
Configuration Considerations for Expand and ServerNet Clusters on page 4-1
•
ServerNet Clusters Coexisting With FOX Rings on page 4-3
•
ServerNet Clusters Coexisting With ATM or IP Networks on page 4-6
Configuration Considerations for Expand and
ServerNet Clusters
Major configuration considerations for Expand and ServerNet clusters include:
•
A route between two nodes that involves a change in technology invokes the use
of the Expand line handlers at every node along the route (including the source
and destination nodes). A change in technology might be a change from an
Expand-over-ServerNet line to an Expand-over-ATM line or from an Expand-over-
ServerNet line to an Expand over FOX line.
Cluster Switch Manual
6770 ServerNet Cluster Manual
6780 ServerNet Cluster 6780 Planning and Installation Guide