Cisco Cisco TelePresence Video Communication Server Expressway
Single Clustered Network Elements
In this scenario each network element is clustered.
Multiple Clustered Network Elements
In this scenario there are multiple clusters of each network element.
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Jabber clients can access their own cluster via any route
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VCS Control uses round robin to select a node (publisher or subscriber) when routing home cluster discovery
requests
requests
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Each combination of Unified CM and IM and Presence Service clusters must use the same domain
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Intercluster Lookup Service (ILS) must be active on the Unified CM clusters
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Intercluster peer links must be configured between the IM and Presence Service clusters, and the Intercluster
Sync Agent (ICSA) must be active
Sync Agent (ICSA) must be active
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Mobile and Remote Access Through Cisco Video Communication Server Deployment Guide
Deployment Scenarios