CANOGA PERKINS 9145ELB NID Software Version 4.01 - Manual (Page 111)

CoS Configuration 9145ELB NID Software User’s Manual
CoS Queues Configuration
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9.3.4 Queues Configuration on Network Ports
The same queue configuration is used for all sets of four egress queues.
From the Class of Service Queue Configuration screen (Figure 9-4), type 4 and press Enter. The
Edit Queue Configuration on Network Ports screen (Figure 9-13) opens.
1. Enable/Disable a Queue This function allows you to enable only those queues you wish
to use. Type the number of the queue you wish to enable or disable. Press the Space bar
to select Enabled or Disabled and then press Enter.
NOTE:The LLQ cannot be disabled and the LLQ size cannot be set to zero (0).
2. Queue Size (in 8K-Byte) The queue size can be any value from 0KB to 8MB (from 8KB
to 8MB for LLQ). To change the queue size, type 2 for LLQ, 5 for Queue 3, 12 for Queue
2, or 19 for Queue 1. Type the new setting and press Enter.
Queues require a size parameter range between 0 and 250 (between 1 and 250 for LLQ).
If you enter an invalid size parameter, the message INVALID INPUT will appear at the
bottom of the screen.
3. Yellow packet threshold is expressed as a percentage. The actual queue size for yellow
packets is calculated based on the percentage value and the queue size. If drop profile is
enabled, the yellow packet threshold is not applicable. If the threshold is changed, the
CBS*/EBS* values will be updated accordingly. See section 11.3 for definition of these
parameters.
4. Scheduling The 9145ELB supports two scheduling modes: Strict Priority (SP) and
Weighted Fair Queuing (WFQ). All queues can be set to service packets using one of the
scheduling mode mentioned above with the exception of the LLQ. The LLQ is always set
by default to SP.
To change the schedule scheme, type 6 for Queue 3, 13 for Queue 2, or 20 for Queue 1.
Press the Space bar to select Strict Priority or Weighted Fair and then press Enter. If
shaping is enabled on a particular queue, the scheduling mode must be configured to
strict priority
NOTE: The scheduling algorithm is applied to each set of four queues associated with each
User Port. This means that, for example, Q1 associated with User 1 and Q1 associated with
User 2 will have the same priority. In this case, the queues are serviced in a round robin fashion.
5. Weight Queue 3, Queue 2 and Queue 1 require a weight parameter range between 0
and 1000. If WFQ is set as the scheduling method, a weigh need to be assigned to each
queue. The weight is proportional to how much bandwidth that queue will receive. The
weight value can be of any range between 0-1000.
To change the queue weight, type 8 for Queue 3, 15 for Queue 2, or 22 for Queue 1. Type
the new setting and press Enter.
NOTE: If you enter an invalid weight parameter, the message INVALID INPUT will appear at the
bottom of the screen.