CANOGA PERKINS 9145EMP NID Software Version 3.1 - Manual (Page 130)

9145EMP NID Software User’s Manual CoS Configuration
CoS Queues Configuration
118
10.3.5 Early Detect Drop Profiles
Early Detect is a congestion avoidance mechanism that allows you to drop packets based on a
specific profile. The drop can be selectively applied to packets with a specific PCP value or a
priority. Doing so allows you to drop packets before a specific queue is full.
Every Queue has two drop profiles associated with it. You can configure a drop profile and
associate it with a specific class of service, and enable or disable each ED Drop Profile
independently, and set the MIN, MAX, and MID values for each queue.
From the Class of Service Queue Configuration screen (Figure 10-3), type 5 for ED Drop Profiles
on User ports, or 6 for ED Drop Profiles on the Network port, and press Enter. The ED Drop
Profile Configuration screen (Figure 10-14 for User ports, or Figure 10-15 for the Network Port)
opens.
1. Press CTRL-T to select Drop Profile A or Profile B.
2. Type 1, 5 or 9 to set the minimum threshold percentage for the appropriate Drop Profile,
press Backspace to remove the current setting, type the desired setting, and press Enter.
3. Type 2, 6 or 10 to set the maximum threshold percentage for the appropriate Drop Profile,
use Backspace to remove the current setting, type the desired setting, and press Enter.
4. Type 3, 7 or 11 to set the Mid threshold percentage for the appropriate Drop Profile, use
Backspace to remove the current setting, type the desired setting, and press Enter.
5. Type 4, 8 or 12 to view the Match Criteria for the appropriate Drop Profile. The Match
Criteria screen (Figure 10-16) for the appropriate ED Drop Profile opens.
a. Press CTRL-T to select A profile or B profile.
b. Press CTRL-D to select DSCP or PCP menus.
c. Type the DSCP or PCP number, or a range of numbers, and press Enter to high-
light the Match column. Press the Space bar to select X (matched) or -
(unmatched) and then press Enter. The next entry is highlighted.
d. Press Esc to return to the bottom of the screen.
6. Press Esc to return to the ED Drop Profile Configuration screen.
7. Press Esc again to return to the Class of Service Queue Configuration screen.
To match a profile, a tagged IP packet must match both PCP and DSCP values.