Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
ICE support
Media encryption
mode
mode
B2BUA
invoked
invoked
Effect on ICE negotiation
Both zones /
subzones = On
subzones = On
At least one zone /
subzone is not Auto
subzone is not Auto
Yes
The B2BUA will perform ICE negotiation with both hosts.
Both zones /
subzones = On
subzones = On
Both zones / subzones
= Auto
= Auto
No
The VCS will not offer any TURN relay candidate addresses
to either of the ICE capable hosts. However, note that each
host device may have already been provisioned with TURN
relay candidate addresses.
to either of the ICE capable hosts. However, note that each
host device may have already been provisioned with TURN
relay candidate addresses.
Note that:
■
B2BUA routed calls are identified in the call history by a component type of B2BUA.
■
A traversal call license is consumed when a call goes via the encryption B2BUA.
■
) that can be routed via the B2BUA.
About the Local Zone and Subzones
The collection of all devices registered with the VCS makes up its Local Zone.
The Local Zone is divided into subzones. These include an automatically created Default Subzone and up to 1000
manually configurable subzones.
manually configurable subzones.
When an endpoint registers with the VCS, it is allocated to an appropriate subzone based on subzone membership
rules. These rules specify the range of IP addresses or alias pattern matches for each subzone. If an endpoint’s IP
address or alias does not match any of the membership rules, it is assigned to the Default Subzone.
rules. These rules specify the range of IP addresses or alias pattern matches for each subzone. If an endpoint’s IP
address or alias does not match any of the membership rules, it is assigned to the Default Subzone.
The Local Zone may be independent of network topology, and may comprise multiple network segments. The VCS
also has two special types of subzones:
also has two special types of subzones:
■
, which is always present
■
, which is always present but only used when your VCS is part of a cluster
Bandwidth management
The Local Zone’s subzones are used for bandwidth management. After you have set up your subzones you can apply
bandwidth limits to:
bandwidth limits to:
■
individual calls between two endpoints within the subzone
■
individual calls between an endpoint within the subzone and another endpoint outside of the subzone
■
the total of calls to or from endpoints within the subzone
For full details of how to create and configure subzones, and apply bandwidth limitations to subzones including the
Default Subzone and Traversal Subzone, see the
Default Subzone and Traversal Subzone, see the
section.
Registration, authentication and media encryption policies
In addition to bandwidth management, subzones are also used to control the VCS's registration, authentication and
media encryption policies.
media encryption policies.
for more information about how to configure these settings.
Local Zone searches
One of the functions of the VCS is to route a call received from a locally registered endpoint or external zone to its
appropriate destination. Calls are routed based on the address or alias of the destination endpoint.
appropriate destination. Calls are routed based on the address or alias of the destination endpoint.
The VCS searches for a destination endpoint in its Local Zone and its configured external zones. You can prioritize
the order in which these zones are searched, and filter the search requests sent to each zone, based on the address
or alias being searched for. This allows you to reduce the potential number of search requests sent to the Local Zone
and out to external zones, and speed up the search process.
the order in which these zones are searched, and filter the search requests sent to each zone, based on the address
or alias being searched for. This allows you to reduce the potential number of search requests sent to the Local Zone
and out to external zones, and speed up the search process.
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Cisco TelePresence Video Communication Server Administrator Guide
Zones and Neighbors