Cisco Catalyst 3750-X User Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 39 Configuring QoS
Configuring Standard QoS
To delete an existing policy map, use the no policy-map policy-map-name global configuration
command. To delete an existing class map, use the no class-map [match-all | match-any]
class-map-name global configuration command. To remove a match criterion, use the no match
{access-group acl-index-or-name | ip dscp | ip precedence} class-map configuration command.
This example shows how to configure the class map called clas
s1. The class1 has one match criterion,
which is access list 103. It permits traffic from any host to any destination that matches a DSCP value
of 10.
Switch(config)# access-list 103 permit ip any any dscp 10
Switch(config)# class-map class1
Switch(config-cmap)# match access-
group 103
Switch(config-cmap)# end
Switch#
This example shows how to create a class map called class2, which matches incoming traffic with DSCP
values of 10, 11, and 12.
Switch(config)# class-map class2
Switch(config-cmap)# match ip dscp
10 11 12
Switch(config-cmap)# end
Switch#
This example shows how to create a class map called class3, which matches incoming traffic with
IP-precedence values of 5, 6, and 7:
Switch(config)# class-map class3
Switch(config-cmap)# match ip prec
edence 5 6 7
Switch(config-cmap)# end
Switch#
Step 5
match {access-group acl-index-or-name | ip dscp
dscp-list | ip precedence ip-precedence-list}
Define the match criterion to classify traffic.
By default, no match criterion is defined.
Only one match criterion per class map is supported, and only
on
e ACL per class map is supported.
• For access-group acl-index-or-name, specify the number
or name of the ACL created in Step 2.
• To filter IPv6 traffic with the match access-group
command, create an IPv6 ACL, as described in Step 2.
• For ip dscp dscp-list, enter a list of up to eight IP DSCP
values to match against incoming packets. Separate each
value with a space. The range is 0 to 63.
• For ip precedence ip-precedence-list, enter a list of up to
eight IP-precedence values to match against incoming
packets. Separate each value with a space. The range is 0
to 7.
Step 6
end Return to privileged EXEC mode.
Step 7
show class-map Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing