Cisco Cisco Expressway Maintenance Manual
Field
Description
Usage tips
On
successful
match
successful
match
Controls the ongoing search behavior if the alias
matches the search rule.
matches the search rule.
Continue: continue applying the remaining
search rules (in priority order) until the endpoint
identified by the alias is found.
search rules (in priority order) until the endpoint
identified by the alias is found.
Stop: do not apply any more search rules, even if
the endpoint identified by the alias is not found in
the target zone.
the endpoint identified by the alias is not found in
the target zone.
If Stop is selected, any rules with the same
priority level as this rule are still applied.
priority level as this rule are still applied.
Target
The zone or policy service to query if the alias
matches the search rule.
matches the search rule.
use as a target of search rules. This could be
used, for example, to call out to an external
service or application, such as a TelePresence
Conductor. The service will return some CPL
which could, for example, specify a new
destination alias which would start the search
process over again.
used, for example, to call out to an external
service or application, such as a TelePresence
Conductor. The service will return some CPL
which could, for example, specify a new
destination alias which would start the search
process over again.
State
Indicates if the search rule is enabled or not.
Use this setting to test configuration changes,
or to temporarily disable certain rules. Any
disabled rules still appear in the rules list but
are ignored.
or to temporarily disable certain rules. Any
disabled rules still appear in the rules list but
are ignored.
Click on the rule you want to configure (or click New to create a new rule, or click Delete to remove a rule).
Useful tools to assist in configuring search rules
■
You can test whether the Expressway can find an endpoint identified by a given alias, without actually placing
a call to that endpoint, by using the
a call to that endpoint, by using the
■
You can test whether a pattern matches a particular alias and is transformed in the expected way by using the
tool (Maintenance > Tools > Check pattern).
Example Searches and Transforms
You can use pre-search transforms and search rules separately or together. You can also define multiple search rules
that use a combination of Any alias and Alias pattern match modes, and apply the same or different priorities to each
rule. This will give you a great deal of flexibility in determining if and when a target zone is queried and whether any
transforms are applied.
that use a combination of Any alias and Alias pattern match modes, and apply the same or different priorities to each
rule. This will give you a great deal of flexibility in determining if and when a target zone is queried and whether any
transforms are applied.
This section gives the following examples that demonstrate how you might use pre-search transforms and search
rules to solve specific use cases in your deployment:
rules to solve specific use cases in your deployment:
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Filter Queries to a Zone Without Transforming
You can filter the search requests sent to a zone so that it is only queried for aliases that match certain criteria. For
example, assume all endpoints in your regional sales office are registered to their local Cisco VCS with a suffix of
example, assume all endpoints in your regional sales office are registered to their local Cisco VCS with a suffix of
@sales.example.com
. In this situation, it makes sense for your Head Office Expressway to query the Sales Office VCS
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Cisco Expressway Administrator Guide