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Chapter 3 QoS in an AVVID-Enabled Campus Network
Selecting a Distribution-Layer Switch
Catalyst 6500 (with Native IOS) as a Distribution-Layer Switch
shows a general model for the Catalyst 6500 (with Native IOS) as a distribution device (as
illustrated in the QoS configurations discussed in this chapter).
Figure 3-14 General Model for Catalyst 6500 (with Native IOS) as a Distribution Switch in QoS
Configurations
For the Catalyst 6500 running Native IOS, QoS requires the following changes to the configuration of
the distribution switch:
1.
Configure QoS.
1.
Configure VoIP control traffic transmit queuing.
2.
Configure the distribution layer with a Layer 3 access switch.
3.
Configure the distribution layer with a Layer 2 access switch.
4.
Configure QoS policies and Layer 3 access lists for VoIP control traffic classification.
Enabling QoS
To enable QoS on the Catalyst 6500 with Native Cisco IOS, do the following:
Step 1
Enable QoS.
Cat6k-distrib (config)#mls qos
Si
Si
IP
VVID=112
6500 w/ PFC
4000
3500
VLAN=12
IP
VVID=111
VLAN=11
IP
VVID=110
VLAN=10
Distribution
Access
Hybrid
6500
Native IOS
6500
7200 WAN
router
74705
2/1
2/2
1/2
3/2
9/1
3/1
1/1