Cisco Cisco Expressway Maintenance Manual
The Links page (Configuration > Bandwidth > Links) lists all existing links and allows you to create, edit and delete
links.
links.
The following information is displayed:
Field
Description
Name
The name of the link. Automatically created links have names based on the nodes that the link is
between.
between.
Node 1 and
Node 2
The Traversal Subzone and the zone that the link is between.
Pipe 1 and
Pipe 2
for more information. Note that in order to apply a pipe, you must first have
page.
Calls
Shows the total number of calls currently traversing the link.
Bandwidth
used
used
Shows the total amount of bandwidth currently being consumed by all calls traversing the link.
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
.
164
Cisco Expressway Administrator Guide
Bandwidth Control