Cisco 6500 Series Software Configuration Manual page 399

Chapter 31 Configuring PFC QoS
Figure 31-5 Marking with PFC2 and Multilayer Switch Feature Card 2
From PFC2
Figure 31-6 Marking with PFC1 and Multilayer Switch Feature Card 1 or 2
From PFC
78-14099-04
Multilayer Switch Feature Card 2 (MSFC2) marking
Yes
IP traffic
from PFC2?
No
Route
traffic
CoS =
all traffic
To egress
port
Multilayer Switch Feature Card (MSFC) marking
Yes
IP traffic
from PFC?
No
Route
traffic
CoS = 0 for all traffic
(not configurable)
To egress
port
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
Understanding How PFC QoS Works
Write ToS
byte into
packet
IP precedence for
(not configurable)
Write ToS
byte into
packet
31-9