Cisco SCE 1000 2xGBE User's Guide download pdf (Page 206)

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Chapter 7 Line Configuration

Configuring TOS Marking

SCE 1000 2xGBE Release 2.0.10 User Guide

7-12 OL-7117-02

Configuring TOS Marking

The SCE 1000 TOS marking feature enables marking the TOS field in the IP header of each

packet according to two applicative attributes of the packet: its Class (class of service) and its

Color (reflects the packet’s level of compliance to its relevant bandwidth limitations, where

applicable). The actual TOS value set in the IP header is determined according to the configurable

TOS table, based on the Class and Color. The default values in the TOS table are based on the

Diffserv standard.

Note

The first few TCP packets (connection establishment) are associated and marked with a default AF4

class that is mapped to the IQ2 queue and are marked accordingly. This occurs because the SCE 1000

transmits the first few packets before classifying the flow and identifying the application or service.

The following commands are relevant to TOS marking:

• no tos-marking diffserv

• tos-marking mode

• tos-marking set-table-entry class

• tos-marking reset-table

• show interface LineCard tos-marking mode

• show interface LineCard tos-marking table

Enabling and Disabling TOS Marking

To enable TOS marking:

Step 1 From the SCE 1000(config if)# prompt, type tos-marking mode

diffserv and press Enter.

To disable TOS marking:

Step 1 From the SCE 1000(config if)# prompt, type no tos-marking diffserv

and press Enter.

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