Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
License Usage Within a Cluster
The following types of licenses are pooled for use by any peer in a cluster, irrespective of which peer the licenses are
installed on:
installed on:
■
Traversal or non-traversal call licenses
■
TURN relay licenses
If a cluster peer becomes unavailable, the shareable licenses installed on that peer remain available to the rest of the
cluster peers for two weeks from the time the cluster lost contact with the peer. This will maintain the overall license
capacity of the cluster — however, note that each peer is limited by its physical capacity. After this two week period,
the licenses associated with the unavailable peer are removed from the cluster. To maintain the same capacity for
your cluster, you should ensure that either the problem with the peer is resolved or new option keys are installed on
another peer in the cluster.
cluster peers for two weeks from the time the cluster lost contact with the peer. This will maintain the overall license
capacity of the cluster — however, note that each peer is limited by its physical capacity. After this two week period,
the licenses associated with the unavailable peer are removed from the cluster. To maintain the same capacity for
your cluster, you should ensure that either the problem with the peer is resolved or new option keys are installed on
another peer in the cluster.
:
Small / Medium / CE500 / CE1100
‡
systems
Large / CE1000 / CE1100
‡
systems
Traversal calls
150
†
500
Non-traversal
calls
calls
750
750
Registrations
2500
5000
TURN relays *
1800
6000
Table 7 Maximum licenses that a peer can use
‡ CE1100 appliance can run with medium or large capacity, depending on whether it has 1Gbps or 10Gbps NICs
installed.
installed.
† This is the maximum number of licenses the system can use. This limit specifically applies to the case where a peer
becomes unavailable and other peers must use its licenses to honor the cluster's overall capacity. This is not
intended as a production capacity limit, only as a temporary measure to allow the affected peer to be returned to
normal service. We strongly discourage installing more than 100 licenses on any platform that has small or
medium capacity.
becomes unavailable and other peers must use its licenses to honor the cluster's overall capacity. This is not
intended as a production capacity limit, only as a temporary measure to allow the affected peer to be returned to
normal service. We strongly discourage installing more than 100 licenses on any platform that has small or
medium capacity.
* On a Large system, the total TURN capacity of 6000 relays is spread evenly across 6 ports; each port is limited to
handling 1000 relays. On a Small/Medium system, there is a single TURN port that handles up to 1800 relays.
handling 1000 relays. On a Small/Medium system, there is a single TURN port that handles up to 1800 relays.
Note that each VCS comes pre-installed with 2,500 registration licenses, and that registration licenses are not
shared across a cluster.
shared across a cluster.
You can see a summary of all of the call, registration and TURN relay licenses installed on each cluster peer by going
to the Option keys page and scrolling down to the Current licenses section.
to the Option keys page and scrolling down to the Current licenses section.
Licenses Used in Intercluster Calls
This section describes the licenses used when endpoints are registered to different peers in the same cluster.
If the call media does not traverse the cluster peers:
■
A SIP call between the endpoints consumes two non-traversal call licenses (one on each node).
■
An H.323 call between the endpoints consumes one non-traversal license (on the node where the endpoint
that initiated the call is registered).
that initiated the call is registered).
If the call media traverses the cluster peers, or if either endpoint is registered with ASSENT or H.460 capability :
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Cisco TelePresence Video Communication Server Administrator Guide
Clustering and Peers