Cisco WS-X6066-SLB-APC - Content Switching Module Software Manual page 712

Understanding How QoS Works
Figure 41-4 Layer 2 Switching Engine Classification and Marking
Figure 41-5 Multilayer Switch Feature Card Marking (MSFC and MSFC2)
From PFC
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
41-6
From
Ingress port
L2 Switching Engine Classification and Marking
*Match
No
Destination
MAC Address/
VLAN?
Yes
Apply
configured
CoS
To
Egress port
Multilayer Switch Feature Card (MSFC) marking
*From SET QOS MAC-COS command
Write ToS
Yes
IP traffic
byte into
from PFC?
packet
No
Route
traffic
CoS = 0 for all traffic
(not configurable)
To egress
port
Chapter 41 Configuring QoS
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