Bandwidth Control Examples - Cisco TelePresence Administrator's Manual

Bandwidth control

Bandwidth control examples

Without a firewall
In the example below, there are three geographically separate offices: Head, Branch and Home. All
endpoints in the Head Office register with the VCS Control, as do those in the Branch and Home offices.
Each of the three offices is represented as a separate subzone on the VCS, with bandwidth configured
according to local policy.
The enterprise's leased line connection to the Internet, and the DSL connections to the remote offices are
modeled as separate pipes.
There are no firewalls involved in this scenario, so direct links can be configured between each of the offices.
Each link is then assigned two pipes, representing the Internet connections of the offices at each end of the
link.
In this scenario, a call placed between the Home Office and Branch Office will consume bandwidth from the
Home and Branch subzones and on the Home and Branch pipes (Pipe B and Pipe C). The Head Office's
bandwidth budget will be unaffected by the call.
With a firewall
If the example deployment above is modified to include firewalls between the offices, we can use Cisco's
Expressway firewall traversal solution to maintain connectivity. We do this by adding a VCS Expressway
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