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Configuring H.323 Gatekeepers and Proxies
H.323 Gatekeeper Configuration Task List
VC-324
Cisco IOS Voice, Video, and Fax Configuration Guide
To put all your gateways in the same zone, use the gw-priority option 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.
Step 3
Router(config-gk)# zone prefix
gatekeeper-name e164-prefix
[gw-priority pri-0-to-10
gw-alias [gw-alias, ...]]
Adds a prefix to the gatekeeper zone list. To remove knowledge of a zone
prefix, use the no form of this command with the gatekeeper name and prefix.
To remove the priority assignment for a specific gateway, use the no form of
this command with the gw-priority option.
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-10 gw-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-alias for 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-10 value.
The gw-alias name 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.
Command Purpose