Configuring H.323 Gatekeepers and Proxies

H.323 Gatekeeper Configuration Task List

Note To explicitly enable or disable a particular endpoint, specify its host address using a 32-bit subnet mask.

Configuring Intergatekeeper Communication

This section describes two ways to configure intergatekeeper communication:

Via DNS, page 307

Manual Configuration, page 308

Via DNS

To configure intergatekeeper communication using DNS, use the following commands in global configuration mode:

 

Command

Purpose

Step 1

 

 

Router(config)# ip name-serverdns-server-name

Specifies the DNS server address.

 

[server-address2...server-address6]

The arguments are as follows:

 

 

 

 

dns-server-name Specifies the IP address of

 

 

the name server.

 

 

server-address2...server-address6—(Optional)

 

 

IP addresses of additional name servers (a

 

 

maximum of six name servers).

Step 2

 

 

Router(config)# ip domain-namename

Defines a default domain name that the Cisco IOS

 

 

software uses to complete unqualified host names

 

 

(names without a dotted-decimal domain name). The

 

 

name argument specifies the default domain name

 

 

used to complete unqualified host names. Do not

 

 

include the initial period that separates an unqualified

 

 

name from the domain name.

 

 

 

For all gatekeepers in the system, enter a text record of the form into DNS:

ras [gk-id@]host [:port] [priority]

The gk-idargument is an optional gatekeeper ID. If the optional gatekeeper ID is not specified, host is used as the gatekeeper ID.

The host argument is either an IP address or the actual host name of the gatekeeper in the form host.some_domain.com.

The port argument, if specified, should be some port number other than RAS port 1719.

The priority argument specifies the order in which the listed gatekeepers should be searched for endpoints. Gatekeepers with lower priorities are searched before those with higher numbers.

How you enter the text record for a particular domain depends on the DNS implementation. The following examples are for the Berkeley Internet Name Domain (BIND). These records are typically entered into the “hosts” database:

zone1.comintxt“ras gk.zone1.com” zone2.comintxt“ras gk2@gk.zone2.com”

Cisco IOS Voice, Video, and Fax Configuration Guide

VC-307

Page 19
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Cisco Systems VC-289 manual Configuring Intergatekeeper Communication, Server-address2...server-address6 -Optional, VC-307

VC-289 specifications

Cisco Systems has long been a leader in networking technology, and among its diverse range of products is the VC-289. Designed specifically for enhanced performance in high-demand environments, the VC-289 serves a critical role in supporting the modern networking infrastructure.

One of the standout features of the VC-289 is its scalability. The device is engineered to easily accommodate expanded workloads, ensuring that organizations can grow without the need for frequent upgrades. This scalability is complemented by Cisco's commitment to backward compatibility, allowing businesses to integrate new systems with existing setups seamlessly.

In terms of performance, the VC-289 boasts impressive processing power. With advanced multi-core architecture, it is capable of handling multiple data streams simultaneously, making it ideal for environments that require consistent data flow, such as cloud computing and IoT applications. The device’s high throughput ensures that users experience minimal latency, facilitating quick data transfers even during peak usage times.

Security is another key characteristic of the VC-289. Cisco has integrated robust security protocols that protect against various cyber threats. Through features such as advanced encryption standards and intrusion prevention systems, organizations can ensure that sensitive data remains secure and is not compromised during transmission.

Another notable technology within the VC-289 is its support for software-defined networking (SDN) capabilities. This allows for more flexible network management, enabling IT teams to adapt the network according to evolving business needs. The ability to programmatically control the network also means that businesses can implement changes more rapidly, reducing downtime and improving overall productivity.

The VC-289 is designed with energy efficiency in mind, featuring power-saving modes that help reduce operational costs. This focus on sustainability not only benefits the environment but also appeals to organizations striving to meet corporate social responsibility objectives.

In conclusion, the Cisco Systems VC-289 stands as an exemplary solution for modern networking challenges. With its scalability, performance capabilities, enhanced security features, SDN support, and energy efficiency, it meets the demands of today's fast-paced and ever-evolving technological landscape. Organizations looking to invest in a robust networking solution would do well to consider the VC-289 as a cornerstone of their infrastructure.