Cisco Catalyst 3750-X Command Reference

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Catalyst 3750-X and 3560-X Switch Command Reference
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
trust
If you specify trust ip-precedence, QoS uses the IP precedence value from the ingress packet and the
IP-precedence-to-DSCP map. For non-IP packets that are tagged, QoS uses the received CoS value; for
non-IP packets that are untagged, QoS uses the default port CoS value. In either case, the DSCP for the
packet is derived from the CoS-to-DSCP map.
To return to policy-map configuration mode, use the exit command. To return to privileged EXEC mode,
use the end command.
Examples This example shows how to define a port trust state to trust incoming DSCP values for traffic classified
with class1:
Switch(config)# policy-map policy1
Switch(config-pmap)# class class1
Switch(config-pmap-c)# trust dscp
Switch(config-pmap-c)# police 1000000 20000 exceed-action policed-dscp-transmit
Switch(config-pmap-c)# exit
You can verify your settings by entering the show policy-map privileged EXEC command.
Related Commands Command Description
class Defines a traffic classification match criteria (through the police, set,
and trust policy-map class configuration commands) for the
specified class-map name.
police Defines a policer for classified traffic.
policy-map Creates or modifies a policy map that can be attached to multiple
ports to specify a service policy.
set Classifies IP traffic by setting a DSCP or IP-precedence value in the
packet.
show policy-map Displays QoS policy maps.

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