3 scheduling scheme, 4 weight parameters, 5 early detect drop profiles – CANOGA PERKINS 9145E NID Software Version 4.10 User Manual

Page 204: 5 early detect drop profile configuration, Scheduling scheme, Weight parameters, Early detect drop profiles, Early detect drop profile configuration

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9145E NID Software User’s Manual

CoS Configuration

Early Detect Drop Profile Configuration

192

Type the appropriate number to change the queue size. Press Backspace to remove the old
setting, then type the new setting. Press Enter to confirm the setting.

10.4.3 Scheduling Scheme

The 9145E supports two scheduling modes: Strict Priority (SP) and Weigh Fair Queuing (WFQ).
All queues can be set to service packets using one of the scheduling mode mentioned above to
the exception to the LLQ. The LLQ is always set by default to SP.

Type the appropriate number for the scheduling schem you want to modify. Press the Space bar
to select Strict Priority or Weighted Fair. Press Enter to confirm the setting.

10.4.4 Weight Parameters

NOTE: Queue 3, Queue 2 and Queue 1 require a Weight parameter range between 0 and 1000.

If you enter an invalid weight parameter, INVALID INPUT will appear at the bottom of the screen.

If WFQ is set as the scheduling method, a weight need to be assigned to each queue. The queue
is proportional to how much bandwidth that queue will receive. The weight value can be of any
range between 0-1000.

Type the appropriate number to change the queue weight. Type the new setting. Press Enter to
confirm the setting.

10.4.5 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 to it. You can configure a drop profile and
associate it with a specific class of service. You can enable or disable each ED Drop Profile
independently.

Type the appropriate number for the schedule scheme you want to modify. Press the Space bar
to select Enabled or Disabled. Press Enter to confirm the setting.

10.5 Early Detect Drop Profile Configuration

You can enable and disable each drop profile, as well as set the MIN, MAX, and MID values for
each queue.

From the Class of Service Configuration screen, type either 4 or 9 and press Enter. The ED Drop
Profile Configuration screen (Figure 10-10) 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.

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