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Cisco Catalyst 3750 User Manual

Cisco Catalyst 3750
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2-360
Catalyst 3750 Switch Command Reference
OL-8552-07
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
mls qos dscp-mutation
mls qos dscp-mutation
Use the mls qos dscp-mutation interface configuration command to apply a Differentiated Services
Code Point (DSCP)-to-DSCP-mutation map to a DSCP-trusted port. Use the no form of this command
to return the map to the default settings (no DSCP mutation).
mls qos dscp-mutation dscp-mutation-name
no mls qos dscp-mutation dscp-mutation-name
Syntax Description
Defaults The default DSCP-to-DSCP-mutation map is a null map, which maps incoming DSCPs to the same
DSCP values.
Command Modes Interface configuration
Command History
Usage Guidelines If two quality of service (QoS) domains have different DSCP definitions, use the
DSCP-to-DSCP-mutation map to translate one set of DSCP values to match the definition of another
domain. You apply the DSCP-to-DSCP-mutation map to the receiving port (ingress mutation) at the
boundary of a quality of service (QoS) administrative domain.
With ingress mutation, the new DSCP value overwrites the one in the packet, and QoS handles the packet
with this new value. The switch sends the packet out the port with the new DSCP value.
You can configure multiple DSCP-to-DSCP-mutation maps on ingress ports.
You apply the map only to DSCP-trusted ports. If you apply the DSCP mutation map to an untrusted
port, to class of service (CoS) or IP-precedence trusted port, the command has no immediate effect until
the port becomes DSCP-trusted.
Examples This example shows how to define the DSCP-to-DSCP-mutation map named dscpmutation1and to apply
the map to a port:
Switch(config)# mls qos map dscp-mutation dscpmutation1 10 11 12 13 to 30
Switch(config)# interface gigabitethernet3/0/1
Switch(config-if)# mls qos trust dscp
Switch(config-if)# mls qos dscp-mutation dscpmutation1
dscp-mutation-name Name of the DSCP-to-DSCP-mutation map. This map was previously
defined with the mls qos map dscp-mutation global configuration
command.
Release Modification
12.1(11)AX This command was introduced.

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Cisco Catalyst 3750 Specifications

General IconGeneral
Device TypeSwitch
Switching Capacity32 Gbps
Forwarding Rate38.7 Mpps
Stacking Bandwidth32 Gbps
RAM128 MB
Jumbo Frame SupportYes
Switch TypeManaged
ModelCatalyst 3750 Series
Uplink InterfacesSFP
Form FactorRack-mountable
MAC Address Table Size12, 000 entries
Routing ProtocolRIP, OSPF, EIGRP
Remote Management ProtocolSNMP, Telnet, HTTP
FeaturesLayer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)PoE
Operating Temperature-5 - 45 °C
Operating Humidity10% to 85% non-condensing

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