Mapping Ingress Dscp Values To Internal Dscp Values; Figure 119: Setting The Trust Mode - Edge-Core ECS3510-26P Management Manual

26-port fast ethernet layer 2 switch

Hide thumbs Also See for ECS3510-26P:

Table of Contents

Use the Traffic > Priority > DSCP to DSCP page to map DSCP values in

incoming packets to per-hop behavior and drop precedence values for

internal priority processing.

The DSCP is six bits wide, allowing coding for up to 64 different forwarding

behaviors. The DSCP replaces the ToS bits, but it retains backward

compatibility with the three precedence bits so that non-DSCP compliant,

ToS-enabled devices, will not conflict with the DSCP mapping. Based on

network policies, different kinds of traffic can be marked for different kinds

of forwarding.

Set the trust mode.

Click Apply.

"qos map dscp-mutation" on page 864

Enter per-hop behavior and drop precedence for any of the DSCP

values 0 - 63.

This map is only used when the priority mapping mode is set to DSCP

246), and the ingress packet type is IPv4. Any attempt to

configure the DSCP mutation map will not be accepted by the switch,

unless the trust mode has been set to DSCP.

Two QoS domains can have different DSCP definitions, so the DSCP-to-

PHB/Drop Precedence mutation map can be used to modify one set of

DSCP values to match the definition of another domain. The mutation

map should be applied at the receiving port (ingress mutation) at the

boundary of a QoS administrative domain.

Random Early Detection starts dropping yellow and red packets when

the buffer fills up to 0x60 packets, and then starts dropping any

packets regardless of color when the buffer fills up to 0x80 packets.

The specified mapping applies to all interfaces.

| Class of Service

Layer 3/4 Priority Settings

Show Quick Links

Table of Contents