Mapping Ingress Dscp Values To Internal Dscp Values; Figure 122: Setting The Trust Mode - Edge-Core ECS4810-12M Layer 2 Management Manual

Hide thumbs Also See for ECS4810-12M Layer 2:

Table of Contents

To configure the trust mode:

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.

Click Traffic, Priority, Trust Mode.

Select the interface type to display (Port or Trunk).

Set the trust mode.

Click Apply.

"qos map dscp-mutation" on page 980

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

250), 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.

| Class of Service

Layer 3/4 Priority Settings

Troubleshooting