FibeAir IP-20C/S/E
User Guide
Ceragon Proprietary and Confidential
Page 219 of 597
2 Select the row you want to modify and click Edit. The 802.1AD Marking -
Edit page opens.
Figure 159: 802.1AD Marking - Edit Page
3 Enter the new 802.1AD UP and 802.1AD DEI values.
4 Click Apply, then Close.
7.5
Configuring WRED
This section includes:
Assigning WRED Profiles to Queues
7.5.1
WRED Overview
Weighted Random Early Detection (WRED) enables differentiation between
higher and lower priority traffic based on CoS. You can define up to 30 WRED
profiles. Each profile contains a green traffic curve and a yellow traffic curve.
This curve describes the probability of randomly dropping frames as a
function of queue occupancy.
The system also includes two pre-defined read-only profiles. These profiles
are assigned profile IDs 31 and 32.
A WRED profile can be assigned to each queue. The WRED profile assigned to
the queue determines whether or not to drop incoming packets according to
the occupancy of the queue. As the queue occupancy grows, the probability of
dropping each incoming frame increases as well. As a consequence,
statistically more TCP flows will be restrained before traffic congestion occurs.
