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Cisco 3750G - Catalyst Integrated Wireless LAN Controller User Manual

Cisco 3750G - Catalyst Integrated Wireless LAN Controller
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33-11
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 33 Configuring QoS
Understanding QoS
When configuring policing on an SVI, you can create and configure a hierarchical policy map with these
two levels:
VLAN level—Create this primary level by configuring class maps and classes that specify the port
trust state or set a new DSCP or IP precedence value in the packet. The VLAN-level policy map
applies only to the VLAN in an SVI and does not support policers.
Interface level—Create this secondary level by configuring class maps and classes that specify the
individual policers on physical ports the belong to the SVI. The interface-level policy map only
supports individual policers and does not support aggregate policers. Beginning with Cisco IOS
Release 12.2(25)SED, you can configure different interface-level policy maps for each class defined
in the VLAN-level policy map.
See the “Classifying, Policing, and Marking Traffic on SVIs by Using Hierarchical Policy Maps” section
on page 33-53 for an example of a hierarchical policy map.
Figure 33-5 shows the policing and marking process when hierarchical policy maps on an SVI.
Figure 33-5 Policing and Marking Flowchart on SVIs
92355
Ye s
Ye s
No
No
Pass
through Drop
Mark
Get the VLAN and
interface-level classification
results for the packet.
Is an interface-level policer
configured for this packet?
Check if the packet is in the
profile by querying the policer.
Check out-of-profile action
configured for this policer.
Drop packet.
Modify DSCP according to the
policed-DSCP map. Generate
a new QoS label.
Start
Done

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Cisco 3750G - Catalyst Integrated Wireless LAN Controller Specifications

General IconGeneral
Switching Capacity32 Gbps
RAM128 MB
Flash Memory32 MB
Power DeviceInternal power supply
Ports48 x 10/100/1000 + 4 x SFP
Performance38.7 Mpps
Wireless LAN Controller Capacity50
StackingYes
FeaturesVLAN support, QoS
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z
Operating Humidity10% to 85% non-condensing
Power over Ethernet (PoE)Yes (optional)

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