User manual

Configuring Your Gateway

SMCD3GN2 Wireless Cable Modem User Manual

DSCP Based QoS Menu

The DSCP Based QoS menu lets you classify and prioritize traffic using DSCP tags. DSCP

allows the Gateway to determine how traffic classes should be prioritized. Using the DSCP

Based QoS menu, you can use DSCP to provide different levels of service to conforming

and non-conforming traffic by appropriately selecting the DSCP values in this menu. The

Gateway uses the Hierarchical Token Bucket queuing algorithm, which divides the 64

possible DSCP code values into 8 queues.

Table 7 shows the actual queuing.

Table 7. Queuing for DSCP-Based QoS

Name Precedence DSCP Range Priority

Routing (default)

000 (0) 000000(0) – 000111 (7) 8

Priority

001 (1) 001000 (8) – 001111 (15) 7

Immediate

010 (2) 010000 (16) – 010111 (23) 6

Flash

011 (3) 011000 (24) – 011111 (31) 5

Flash Override

100 (4) 100000 (32) – 100111 (39) 4

Critical

101 (5) 101000 (40) – 101111 (47) 3

Internetwork Control

110 (6) 111000 (48) – 110111 (55) 2

Network Control

111 (7) 111000 (56) – 111111 (63 1

To access the DSCP Based QoS menu, click QOS in the menu bar and then click the DSCP

submenu in the menu bar. Figure 26 shows an example of the menu.

Note: The DSCP submenu is not available in the menu bar if Enable QOS Module is not

checked in the QoS Settings menu (see page 39).