VC-350

Configuring H.323 Gatekeepers and Proxies

H.323 Gatekeeper Configuration Examples

Note The no shut command is issued on both gatekeepers, primary and secondary. If the show gatekeeper status command is issued on the two gatekeepers, gk1 will show the following:

Gatekeeper State: UP

But gk2 will show the following:

Gatekeeper State: HSRP STANDBY

Using ASR for a Separate Multimedia Backbone Example

The examples in this section illustrate a separate multimedia backbone network dedicated to transporting only H.323 traffic. The closed functionality of the H.323 proxy is necessary for creating this type of backbone. Place a closed H.323 proxy on each edge of the multimedia backbone to achieve the following goals:

•The proxy directs all inter-proxy H.323 traffic, including Q.931 signaling, H.245, and media stream, to the multimedia backbone.

•The proxy shields the multimedia backbone so that routers on edge networks and other backbone networks are not aware of its existence. In this way, only H.323-compliant packets can access or traverse the multimedia backbone.

•The proxy drops any unintended non-H.323 packets that attempt to access the multimedia backbone. This section contains the following subsections:

•Enabling the Proxy to Forward H.323 Packets, page 351

•Isolating the Multimedia Network, page 351

•Configuring a Co-Edge Proxy with ASR Without Subnetting Example, page 352

•Co-Edge Proxy with Subnetting Example, page 354

•Configuring an Inside-Edge Proxy with ASR Without Subnetting Example, page 356

•Configuring a QoS-Enforced Open Proxy Using RSVP Example, page 357

•Configuring a Closed Co-Edge Proxy with ASR Without Subnetting Example, page 359

Figure 62 illustrates a network that has a multimedia backbone. A gatekeeper (not shown) in the edge network (zone) directs all out-of-zone H.323 calls to the closed proxy on the edge of that network. The closed proxy forwards this traffic to the remote zone through the multimedia backbone. A closed proxy and the edge router may reside in the same Cisco router, or they may be in separate routers, as shown in Figure 62.

Figure 62 Sample Network with Multimedia Backbone

PX1

EP1	Edge net 1

Multimedia

backbone

Data backbone

PX2

Edge net 2

EP2

11391

Cisco IOS Voice, Video, and Fax Configuration Guide

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.