Cisco Cisco Expressway
Task 12: Configuring the DNS Zone
The DNS zone is used to search for externally hosted systems (such as for business to business calling). Destination
aliases are searched for by a name using a DNS lookup.
aliases are searched for by a name using a DNS lookup.
To configure the DNS zone:
1.
Sign in to the Expressway-E.
2.
Go to Configuration > Zones > Zones.
3.
Click New.
4.
Configure the fields as follows (leave all other fields with default values):
Field name
Value
Name
Enter DNSZone for example
Type
DNS
H.323 Mode
On
SIP Mode
On
Fallback transport protocol
TCP
Include address record
Off
5.
Click Create zone.
Task 13: Configuring DNS Zone Search Rules
The DNS search rule defines when the DNS zone should be searched.
A specific regular expression is configured which will prevent searches being made using the DNS zone (i.e. on the
public internet) for destination addresses (URIs) using any SIP domains which are configured on the local network
(local domains).
public internet) for destination addresses (URIs) using any SIP domains which are configured on the local network
(local domains).
To create the search rules to route via DNS:
1.
Sign in to the Expressway-E.
2.
Go to Configuration > Dial plan > Search rules.
3.
Click New.
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Cisco Expressway-E and Expressway-C - Basic Configuration Deployment Guide
Routing Configuration