5 early detect drop profiles – CANOGA PERKINS 9145EMP NID Software Version 4.0 User Manual

Page 136

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CoS Configuration

9145EMP NID Software User’s Manual

CoS Queues Configuration

121

Figure 10-12 Edit Queue Configuration Network Ports screen

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.

NOTE: Drop profiles and shapers are mutually exclusive. If shaping is enabled, you cannot
enable drop profiles, and vice versa.

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 10-13 for User ports, or Figure 10-14 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.

Canoga Perkins Corp. Ethernet Network Interface Device 20-MAR-2011
9145EMP-761-4-0 V40.43 Canoga 9145EMP 32 device 11:20:59
--------------------------EDIT QUEUE CONFIGURATION ON NETWORK PORTS-------------
1) LLQ: Enabled
2) Size (CBS* in 8K-byte): 8
3) Yellow Packets Thr. (%): 50 CBS*/EBS*: 64K/32K
----------------------------------------------------------------------------
4) Queue 3: Enabled 8) Weight: 256
5) Size (CBS* in 8K-byte): 8 9) ED Drop Profile 3A: Disabled
6) Scheduling: Weighted Fair Q 10) ED Drop Profile 3B: Disabled
7) Yellow Packets Thr. (%): 70 CBS*/EBS*: 64K/49K
----------------------------------------------------------------------------
11) Queue 2: Enabled 15) Weight: 128
12) Size (CBS* in 8K-byte): 8 16) ED Drop Profile 2A: Disabled
13) Scheduling: Weighted Fair Q 17) ED Drop Profile 2B: Disabled
14) Yellow Packets Thr. (%): 30 CBS*/EBS*: 64K/19K
----------------------------------------------------------------------------
18) Queue 1: Enabled 22) Weight: 64
19) Size (CBS* in 8K-byte): 8 23) ED Drop Profile 1A: Disabled
20) Scheduling: Weighted Fair Q 24) ED Drop Profile 1B: Disabled
21) Yellow Packets Thr. (%): 100 CBS*/EBS*: 64K/64K

Select [1-24]:
------------------------------------Messages-----------------------------------

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