Command Reference Guide

116 ● qos rtpq 3Com Router 5000 Family and Router 6000 Family
Command Reference
The parameter "bandwidth" should be set greater than the service-required
bandwidth so as to prevent conflict caused by the burst traffic. However, the
bandwidth should be no greater than 75% of the total bandwidth. If you need to
configure the bandwidth to be greater than 75% of the total bandwidth, please first
change the maximum reserved bandwidth via
qos reserved-bandwidth
command.
In bandwidth allocation, the bandwidth for data load, IP header, UDP header and RTP
header is allocated, except that for the Layer2 frame header. Therefore, it is obligatory
to reserve 25% of the total bandwidth.
CAUTION: Except for interfaces encapsulated with X.25 or LAPB, all physical
interfaces can use RTPQ.
You can apply an RTPQ to a dialer interface successfully only when its physical
interfaces use default queuing and have adequate bandwidth.
Related Command qos reserved-bandwidth