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:
licenses are installed on:
n
Traversal or non-traversal call licenses
n
TURN relay licenses
Small / Medium systems
Large systems
Traversal calls
150
500
Non-traversal calls
750
750
Registrations
2500
5000
TURN relays *
1800
6000
Table 4: Maximum physical capacity per peer
* 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.
limited to 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.
not shared across a cluster.
If two endpoints are registered to different cluster peers, and a SIP call is made between them, two non-
traversal licenses are used. If the call is made over H.323, only one non-traversal license is used.
traversal licenses are used. If the call is made over H.323, only one non-traversal license is used.
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 still limited by its physical
capacity as listed above. 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.
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 still limited by its physical
capacity as listed above. 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.
Note that you are also limited to the number of call license option keys that can be installed (purchased) per
VCS peer as follows:
VCS peer as follows:
Small / Medium systems
Large systems
Traversal calls
100
500
Non-traversal calls
500
500
TURN relays
1800
6000
Table 5: Maximum call license option keys that can be installed (purchased) per peer
You can see a summary of all of the call, registration and TURN relay licenses installed on each cluster peer
by going to the
by going to the
Option keys
page and scrolling down to the
Current licenses
section.
Cisco TelePresence Video Communication Server Administrator Guide (X8.2)
Page 184 of 542
Clustering and peers
License usage within a cluster