Microsens MS453490M Management Guide - Manual (Page 405)

C HAPTER 15 | Basic Administration Protocols
Switch Clustering
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S WITCH C LUSTERING
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.
C OMMAND U SAGE
◆ A switch cluster has a primary unit called the “Commander” which is
used to manage all other “Member” switches in the cluster. The
management station can use either Telnet or the web interface to
communicate directly with the Commander through its IP address, and
then use the Commander to manage Member switches through the
cluster’s “internal” IP addresses.
◆ Clustered switches must be in the same Ethernet broadcast domain. In
other words, clustering only functions for switches which can pass
information between the Commander and potential Candidates or
active Members through VLAN 4093.
◆ 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.
◆ 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 Show Member page.
C ONFIGURING
G ENERAL S ETTINGS
FOR C LUSTERS
Use the Administration > Cluster (Configure Global) page to create a
switch cluster.
CLI R EFERENCES
◆ "Switch Clustering" on page 548
C OMMAND U SAGE
First be sure that clustering is enabled on the switch (the default is
disabled), 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.