Cisco Cisco TelePresence Video Communication Server Expressway Maintenance Manual
4.
Clustering and Presence
Clustering supports the use of Presence.
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All peers in the cluster must have identical SIP domain, Presence Server and Presence User Agent (PUA)
configuration.
configuration.
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If peers in the cluster have the PUA enabled, each peer publishes information about its own local registrations.
This information is routed to a Presence Server authoritative for the cluster’s domain.
This information is routed to a Presence Server authoritative for the cluster’s domain.
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If peers have the Presence Server enabled, the Presence database is replicated across all peers in the cluster.
When viewing presence status on a peer in a cluster:
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Publishers shows all presentities across the cluster for whom presence information is being published.
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Presentities shows any presentity for whom a subscription request has been received on the local VCS only.
■
Subscribers shows each endpoint from which a subscription request has been received on the local VCS
only.
only.
Clustering and Cisco TMS
Cisco TMS version 13.2 or later is mandatory if your cluster is configured to use FindMe or Device Provisioning. From
X8.1 onwards you must use Cisco TelePresence Management Suite Provisioning Extension.
X8.1 onwards you must use Cisco TelePresence Management Suite Provisioning Extension.
Size limitations for clusters and provisioning
A VCS cluster of any size supports up to:
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10,000 FindMe accounts
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10,000 users for provisioning
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200,000 phonebook entries
Note that:
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systems can support up to 2,500 device registrations per peer, subject to a maximum of 10,000
registrations per cluster. Typically this means one device per FindMe account.
■
systems can support up to 5,000 device registrations per peer (with a maximum of 20,000 registrations
per cluster). However, you are still limited to 10,000 FindMe accounts/users and 10,000 provisioned devices
per cluster.
per cluster.
If you need to provision more than 10,000 devices, your network will require additional VCS clusters with an
appropriately designed and configured dial plan.
appropriately designed and configured dial plan.
for more information about using clusters with Cisco
TMS.
About the Cluster Subzone
When two or more VCSs are clustered together, a new subzone is created within the cluster’s Local Zone. This is the
Cluster Subzone (see the diagram in the
Cluster Subzone (see the diagram in the
cluster will briefly pass via this subzone during call setup.
The Cluster Subzone is (like the Traversal Subzone) a virtual subzone used for call routing only, and endpoints cannot
register to this subzone. After a call has been established between two peers, the Cluster Subzone will no longer
appear in the call route and the call will appear as having come from (or being routed to) the Default Subzone.
register to this subzone. After a call has been established between two peers, the Cluster Subzone will no longer
appear in the call route and the call will appear as having come from (or being routed to) the Default Subzone.
The two situations in which a call will pass via the Cluster Subzone are:
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Cisco TelePresence Video Communication Server Administrator Guide