Cisco Cisco Expressway Maintenance Manual
You can configure up to 3000 links. Some links are created automatically when a zone is created.
Default Links
The Expressway is shipped with the Default Subzone, Traversal Subzone and Default Zone already created, and with
default links pre-configured between them as follows: DefaultSZtoTraversalSZ, DefaultSZtoDefaultZ and
TraversalSZtoDefaultZ. If the Expressway is in a cluster, an additional link, DefaultSZtoClusterSZ, between the
Default Subzone and the Cluster Subzone is also established.
default links pre-configured between them as follows: DefaultSZtoTraversalSZ, DefaultSZtoDefaultZ and
TraversalSZtoDefaultZ. If the Expressway is in a cluster, an additional link, DefaultSZtoClusterSZ, between the
Default Subzone and the Cluster Subzone is also established.
You can edit any of these default links in the same way you would edit manually configured links. If any of these links
have been deleted you can re-create them, either:
have been deleted you can re-create them, either:
■
manually through the web interface
■
automatically by using the CLI command
xCommand DefaultLinksAdd
Automatically created links
Whenever a new zone is created, links are automatically created as follows:
New zone type
Default links are created to...
Neighbor zone
Default Subzone and Traversal Subzone
DNS zone
Default Subzone and Traversal Subzone
ENUM zone
Default Subzone and Traversal Subzone
Traversal client zone
Traversal Subzone
Traversal server zone
Traversal Subzone
Along with the pre-configured default links this ensures that, by default, any zone has connectivity to all other
subzones and zones. You may rename, delete and amend any of these default links.
subzones and zones. You may rename, delete and amend any of these default links.
Note:
calls will fail if links are not configured correctly. You can check whether a call will succeed, and what
bandwidth will be allocated to it, using the CLI command
xCommand CheckBandwidth
.
Configuring Pipes
Pipes are used to control the amount of bandwidth used on calls between specific subzones and zones. The limits
can be applied to the total concurrent bandwidth used at any one time, or to the bandwidth used by any individual
call.
can be applied to the total concurrent bandwidth used at any one time, or to the bandwidth used by any individual
call.
To apply these limits, you must first create a pipe and configure it with the required bandwidth limitations. Then when
configuring
configuring
you assign the pipe to one or more links. Calls using the link will then have the pipe’s bandwidth
The Pipes page (Configuration > Bandwidth > Pipes) lists all the pipes that have been configured on the Expressway
and allows you to create, edit and delete pipes.
and allows you to create, edit and delete pipes.
The following information is displayed:
Field
Description
Name
The name of the pipe.
Total
bandwidth
bandwidth
The upper limit on the total bandwidth used at any one time by all calls on all links to which this
pipe is applied.
pipe is applied.
Per call
bandwidth
bandwidth
The maximum bandwidth of any one call on the links to which this pipe is applied.
160
Cisco Expressway Administrator Guide