June 2003
Intermediate to advanced
432 pages
15h 56m
English
book
Cisco Catalyst QoS: Quality of Service in Campus Networks
by Mike Flannagan - CCIE® No. 7651, Richard Froom - CCIE No. 5102, Kevin Turek - CCIE No. 7284
Content preview from Cisco Catalyst QoS: Quality of Service in Campus Networks
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160 Chapter 6: QoS Features Available on the Catalyst 2950 and 3550 Family of Switches
Ingress DSCP Mutation
Classification using ingress DSCP mutation enables the switch to map ingress DSCP values
to alternate configured DSCP values. In essence, DSCP mutation is the logical equivalent
to a DSCP-to-DSCP mapping. Ingress DSCP mutation is commonly used when connecting
multiple autonomous QoS domains, as illustrated in Figure 6-8. This feature is only
available on the Catalyst 3550 Family of switches.
Figure 6-8 DSCP Mutation
In this example, Switch 1 remaps packets with ingress DSCP values of 45 to 30 by way of
the internal DSCP value. Example 6-13 ...
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