User guide
20 Release Notes for Cisco 2500 Series for Cisco IOS Release 12.0 T
New and Changed Information
The Multimedia Conference Manager feature provides network administration mechanisms to
support H.323 applications without impacting the mission critical applications running on today’s
networks. Multimedia Conference Manager is implemented on Cisco IOS software. Multimedia
Conference Manager provides the network administrator with these abilities:
• Identify H.323 traffic and apply appropriate policies
• Limit H.323 traffic on the local-area network (LAN) and wide-area network (WAN)
• Provide user accounting for records based on service utilization
• Insert QoS for the H.323 traffic generated by applications such as Voice over IP (VoIP), data
conferencing, and video conferencing
• Implement security for H.323 communications
Multimedia Conference Manager has two principal functions: gatekeeper and proxy. This document
describes the value of the Multimedia Conference Manager gatekeeper and proxy functions for
end-to-end implementation of H.323-compliant multimedia applications. These functions are
unique to Multimedia Conference Manager. Similar robust features are currently not available in
other vendor solutions.
Gatekeeper subsystems provide:
• User authorization where authorization, authentication, and accounting (AAA) account holders
are permitted to register and use the services of Multimedia Conference Manager
• Accounting using AAA call detail records
• Zone bandwidth management to limit the number of active sessions
• H.323 call routing
• Address resolution
Starting with Cisco IOS Releases 11.3(6)Q and 11.3(7)NA and later, you can configure Cisco
gatekeepers to use the Cisco Hot Standby Routing Protocol (HSRP), so that when one gatekeeper
fails, the standby gatekeeper assumes its role.
Proxy subsystems provide:
• H.323 traffic consolidation
• Tight bandwidth controls
• QoS mechanisms such as IP Precedence and RSVP
• Secure communication over extranets
NetFlow Policy Routing
IP policy routing now works with Cisco Express Forwarding (CEF), Distributed CEF (DCEF),
NetFlow, and NetFlow with flow acceleration. IP policy routing was formerly supported only in
fast-switching and process-switching. Now that policy routing is integrated into CEF, policy routing
can be deployed on a wide scale and on high-speed interfaces.