PLANET SGSD-1022 - Manual (Page 335)

User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
4.12 Cluster
Switch Clustering is a method of grouping switches together to enable centralized management through a single unit. Switches
that support clustering can be grouped together regardless of physical location or switch type, as long as they are connected to
the same local network.
Command Usage
• A switch cluster has a “Commander” unit that is used to manage all other “Member” switches in the cluster. The
management station can use both Telnet and the web interface to communicate directly with the Commander through its IP
address, while the Commander manages Member switches using the cluster’s “internal” IP addresses.
• There can be up to 36 Member switches in one cluster, and Cluster switches must be in the same IP subnet.
• Once a switch has been configured to be a cluster Commander, it automatically discovers other cluster-enabled switches in
the network. These “Candidate” switches only become cluster Members when manually selected by the administrator
through the management station.
• Cluster switches are limited to the same Ethernet broadcast domain.
• There can be up to 100 candidates and 36 member switches in one cluster.
• A switch can only be a member of one cluster.
• After the Commander and Members have been configured, any switch in the cluster can be managed from the web agent by
choosing the desired Member ID from the Cluster drop down menu. To connect to a Member switch through the CLI, use the
rcommand.
4.12.1 Cluster Configuration
To create a switch cluster, first be sure that clustering is enabled on the switch (the default is enabled), then set the switch as a
Cluster Commander. Set a Cluster IP Pool that does not conflict with the network IP subnet. Cluster IP addresses are assigned
to switches when they become Members and are used for communication between Member switches and the Commander.
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