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Chapter 6
Configuring VoIP
Additional VoIP Dial-Peer Configurations
For example, to ensure that voice traffic associated with VoIP dial peer 103 is
given a higher priority than other IP network traffic, enter the following:
c4224(config)# dial-peer voice 103 voip
c4224(config-dial-peer)# ip precedence 5
In this example, when an IP call leg is associated with VoIP dial peer 103, all
packets transmitted to the IP network via this dial peer will have their precedence
bits set to 5. If the networks receiving these packets have been configured to
recognize precedence bits, the packets are given priority over packets with a
lower configured precedence value.
Configure RSVP for Dial Peers
RSVP must be enabled at each LAN or WAN interface across which voice packets
will travel. After enabling RSVP, you must use the req-qos dial-peer
configuration command to request an RSVP session and configure the QoS for
each VoIP dial peer. Otherwise, no bandwidth is reserved for voice traffic.
For example, to configure controlled-load QoS for VoIP dial peer 108, enter the
following global configuration commands:
c4224(config)# Dial-peer voice 108 voip
c4224(config-dial-peer)# req-qos controlled-load
c4224(config-dial-peer)# session target ipv4:10.0.0.8
In this example, every time a connection is made through VoIP dial peer 108, an
RSVP reservation request is made between the local router, all intermediate
routers in the path, and the final destination router.
Cisco recommends that you select controlled-load for the requested QoS. The
Note
controlled-load service uses admission (or capacity) control to ensure that
preferential service is provided even when the bandwidth is overloaded.
Catalyst 4224 Access Gateway Switch Software Configuration Guide
6-34
OL-2031-02
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Table of Contents
Troubleshooting
