MRV Communications LX-4000 Series Información técnica Pagina 328

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13-2 What is a Cluster?
LX Series Configuration Guide
Each LX unit can get a software update from the TFTP server
and write it to flash. The reboot image is downloaded to all
cluster members. Again, Cluster Configuration and Control
provides update status.
What is a Cluster?
L Up to 1000 nodes are allowed in a single LX cluster.
Some performance degradation will occur for large
clusters, depending on specific network
characteristics.
A
cluster is an independent group of LX Console Servers that
share some number of common configuration attributes. The
cluster has a defined secret: all the units associated with that
cluster are configured with that same secret. A cluster member’s
IP address table (configured on any one of the LX units) initially
associates each individual LX with the cluster.
Cluster members can traverse switches and routers, so they do
not need to be on the same network. Each LX unit in a cluster is
a peer, and each unit can act as a virtual master, thus
eliminating a single point of failure if something should be amiss
at any one of the nodes.
For security reasons, LX units can be members of only one
cluster. You can create multiple independent clusters when your
situation demands departmental security or unit/units isolation.
L The Cluster feature has also been enhanced to
improve the performance of Cluster operations. The
user/administrator need not take any action to
enable/use this feature.
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