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Watson SHDSL Router

Web-based Management Manual

Watson-SHDSL-Router-GUI-Manual.doc

Version 2.3-03

8-52

Revision: 2012-02-29

Figure 8-56: Edit DSCP Settings

3. Configure the following fields:

 DSCP Value (hex) Enter a hexadecimal number that will serve as the

DSCP value.

 802.1p Priority Select a 802.1p priority level from the drop-down menu

(each priority level is mapped to low/medium/high priority queue).

4. Click 'OK' to save the settings.

Note that the DSCP value overriding the priority of incoming packets with an unas-

signed value (priority 0, assumed to be a no-priority-set) is "0x0".

8.3.6 802.1p Settings

The IEEE 802.1p priority marking method is a standard for prioritizing network traf-

fic at the data link/Mac sub-layer. 802.1p traffic is simply classified and sent to the

destination, with no bandwidth reservations established. The 802.1p header in-

cludes a 3-bit prioritization field, which allows packets to be grouped into eight lev-

els of priority (0-7), where level 7 is the highest one. In addition, Watson maps the-

se eight levels to low/medium/high priority queues, where Queue 0 has the lowest

priority.

By default, the higher the level and queue values, the more priority they receive.

Therefore, the more critical the traffic is, the higher priority level and queue number

it should receive. To change the mapping between a priority value and a queue

value, perform the following:

1. Under the 'QoS' menu item, click '802.1p Settings'. The following screen ap-

pears.

Figure 8-57: Traffic Queuing in 802.1p Settings

2. From the corresponding drop-down menu, select a desired value.

3. Click 'OK' to save the settings.

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Schmid Watson Technical Information Page 98