Configuring H.323 Gatekeepers and Proxies

H.323 Gatekeeper Configuration Task List

 

Command

Purpose

 

 

 

Step 3 Router(config-gk)# zone prefix

Adds a prefix to the gatekeeper zone list. To remove knowledge of a zone

 

gatekeeper-name e164-prefix

prefix, use the no form of this command with the gatekeeper name and prefix.

 

[gw-priority pri-0-to-10

To remove the priority assignment for a specific gateway, use the no form of

 

gw-alias [gw-alias, ...]]

 

this command with the gw-priorityoption.

 

 

 

 

The keywords and arguments are as follows:

 

 

• gatekeeper-name—Specifies the name of a local or remote gatekeeper,

 

 

which must have been defined by using the zone local or zone remote

 

 

command.

 

 

• e164-prefix—Specifies an E.164 prefix in standard form followed by dots

 

 

(.). Each dot represents a number in the E.164 address. For example,

 

 

212....... is matched by 212 and any seven numbers.

 

 

Note Although a dot representing each digit in an E.164 address is the

 

 

preferred configuration method, you can also enter an asterisk (*) to

 

 

match any number of digits.

 

 

• gw-priority pri-0-to-10gw-alias—(Optional) Use the gw-priority

 

 

option to define how the gatekeeper selects gateways in its local zone for

 

 

calls to numbers that begin with prefix e164-prefix. Do not use this option

 

 

to set priority levels for a prefix assigned to a remote gatekeeper.

 

 

Use values from 0 to 10. A 0 value prevents the gatekeeper from using the

 

 

gateway gw-aliasfor that prefix. Value 10 places the highest priority on

 

 

gateway gw-alias. If you do not specify a priority value for a gateway, the

 

 

value 5 is assigned.

 

 

To assign the same priority value for one prefix to multiple gateways, list

 

 

all the gateway names after the pri-0-to-10value.

 

 

The gw-aliasname is the H.323 identification (ID) of a gateway that is

 

 

registered or that will register with the gatekeeper. This name is set on the

 

 

gateway with the h323-gateway voip h.323-id command.

 

 

 

To put all your gateways in the same zone, use the gw-priorityoption and specify which gateways are used for calling different area codes. For example:

zone local localgk xyz.com

 

 

zone prefix localgk 408

 

 

zone

prefix

localgk

415

gw-priority

10 gw1 gw2

zone

prefix

localgk

650

gw-priority

0 gw1

The above commands accomplish the following:

•Domain xyz.com is assigned to gatekeeper localgk.

•Prefix 408 is assigned to gatekeeper localgk, and no gateway priorities are defined for it; therefore, all gateways registering to localgk can be used equally for calls to the 408 area code. No special gateway lists are built for the 408 prefix; a selection is made from the master list for the zone.

•The prefix 415 is added to gatekeeper localgk, and priority 10 is assigned to gateways gw1 and gw2.

Cisco IOS Voice, Video, and Fax Configuration Guide

VC-324

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Cisco Systems VC-289 manual Gateway with the h323-gateway voip h.323-id command, VC-324
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