Cisco Cisco Expressway
Note that the regular expression used to prevent local domains being searched via the DNS zone can be
broken down into the following components:
broken down into the following components:
(.*) = match all pattern strings
(?!.*@%localdomains%.*$).* = do not match any pattern strings ending in @localdomains
In the deployment example, calls destined for @cisco.com would be searched via the DNS zone, whereas
calls destined for @example.com would not.
calls destined for @example.com would not.
Task 11: Configuring external (unknown) IP address routing
The following configuration defines how an Expressway routes calls (and other requests) to external IP
addresses. An external IP address is an IP address which is not ‘known’ to the Expressway and therefore
assumed to be a publicly routable address.
addresses. An external IP address is an IP address which is not ‘known’ to the Expressway and therefore
assumed to be a publicly routable address.
n
All requests destined for external IP addresses, originating at the Expressway-C are routed to the
Expressway-E using a search rule.
Expressway-E using a search rule.
n
The Expressway-E then attempts to open a connection directly to the IP address.
To configure how the Expressway will handle calls to unknown IP addresses:
1. Go to
Configuration > Dial plan > Configuration
.
2. Configure the fields as follows:
Expressway-C
Expressway-E
Calls to unknown IP addresses
Indirect
Direct
Cisco Expressway Basic Configuration Deployment Guide
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Routing configuration