Before You Change a Cluster
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Systems that are configured as peers must not also be configured as neighbors to each other, and vice versa.
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If peers are deployed on different LANs, there must be sufficient connectivity between the networks to ensure a low degree of latency between the peers.
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Cluster peers can be in separate subnets. Peers communicate with each other using H.323 messaging, which can be transmitted across subnet boundaries.
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Deploying all peers in a cluster on the same LAN means they can be configured with the same routing information such as local domain names and local domain subnet masks.
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To remove a peer from the cluster you must clear all peer address fields on that peer, save, then restart.
Caution |
If you clear all the peer address fields from the clustering page and save the configuration, then the Expressway will factory reset itself the next time you do a restart. This means you will lose all existing configuration except basic networking for the LAN1 interface, including all configuration that you do between when you clear the fields and the next restart. |
The Expressway displays a banner to remind you that it is pending a factory reset.
If you need to prevent the factory reset, restore the clustering peer address fields exactly as they were. Replace the original peer addresses in the same order, and then save the configuration to clear the banner and prevent the reset.