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Configuring H.323 Gatekeepers and Proxies
H.323 Gatekeeper Configuration Task List
VC-310
Cisco IOS Voice, Video, and Fax Configuration Guide
Configuring Redundant Gatekeepers for a Zone Prefix
To configure redundant gatekeepers for a zone prefix, use the following commands beginning in global
configuration mode:
You can configure multiple remote gatekeepers for the same prefix, but only one of the gatekeepers
defined for any given zone prefix can be local. It is recommended that you limit the number of remote
gatekeepers that service the same zone prefix to two.
By default, LRQs are sent sequentially to the remote gatekeepers. If you would like the LRQs to be sent
simultaneously (blast), you need only specify the blast keyword on one zone prefix command per E.164
prefix.
Verifying Zone Prefix Redundancy
To verify the order in which LRQs will be sent to the gatekeepers defined for a zone prefix, enter the
show gatekeeper zone prefix command. The following output lists all the gatekeepers, in order, and the
zone prefixes serviced by each.
router# show gatekeeper zone prefix
ZONE PREFIX TABLE
=================
GK-NAME E164-PREFIX
------- -----------
c3620-1-gk 917300....
c2514-2-gk 917300....
c2600-1-gk 919.......
c2514-1-gk 919.......
Step 3
Router(config-gk)# zone remote
other-gatekeeper-name other-domain-name
other-gatekeeper-ip-address
[port-number]
Configures the remote gatekeeper.
The arguments are as follows:
• other-gatekeeper-name—Name of the remote
gatekeeper.
• other-domain-name—Domain name of the remote
gatekeeper.
• other-gatekeeper-ip-address—IP address of the
remote gatekeeper.
• port-number—(Optional) RAS signaling port
number for the remote zone. Value ranges from 1 to
65,535. If this option is not set, the default is the
well-known RAS port number 1719.
Command Purpose
Command Purpose
Step 1
Router(config)# gatekeeper
Enters gatekeeper configuration mode.
Step 2
Router(config-gk)# zone prefix gatekeeper-name
e164-prefix [blast | seq] [gw-priority priority
gw-alias [gw-alias, ...]]
Adds a prefix to the gatekeeper zone list.
For an explanation of the keywords and arguments,
see Step 3 of the configuration task table in the
“Starting a Gatekeeper” section on page 304.