Setting The Group Port Weights - Dell PowerConnect B-RX Configuration Manual

18
QoS for the oversubscribed 16 x 10GE modules
TABLE 94
7
8
9
10
11
12
13
14
15

Setting the group port weights

The command qos rcv-scheduler wfq 1 2 3 4 5 6 7 8 1 2 1 2 1 2 is used for Storage mode. This
mode uses weighting to determine the queue scheduling. The network ports are still assigned high
low and low high queues but are scheduled based on the weights assigned.
Setting the averaging-fair-weight (wfq) parameter
The wfq parameter is configured as the averaging-fair-weight parameter. In this implementation,
you can set one of 13 (1 - 13) possible values. These values represent a wfg value as described in
Table 95
Calculating the values for WFQ storage mode traffic scheduling
Weighted Fair Queueing (WFQ) scheduling is configured to be a percentage of available bandwidth
using the following formula.
Where.
w (x) = The value of the queue that you want to determine the weight for. It can be the value of any
weight (0 - 7).
w0 - w7 = the assigned values of the eight weights.
Weight of w (x) = the calculated weight as a percentage of the port's total bandwidth.
For example if you assign the following values to weight 0 to 7.
BigIron RX (config-if-e10000-4/1)#qos rcv-scheduler wfq 1 5 1 5 1 5 1 5
Weight 0 = 1, Weight 1 = 5, Weight 2 = 1, Weight 3 = 5, Weight 4 = 1, Weight 5 = 5, Weight 6 = 1,
and Weight 7 = 5
490
QOS profile table (Continued)
3 0 3 or 7
4 1 0 or 4
5 1 1 or 5
6 1 2 or 6
7 1 3 or 7
4 0 0 or 4
5 0 1 or 5
6 0 2 or 6
7 0 3 or 7
Weight of w (x) =
------------------------------------------------------------
w0 + w1 + w2 + w3 + w4 + w5 + w6 + w7
Low priority TC DP0
High priority TC DP1
High priority TC DP1
High priority TC DP1
High priority TC DP1
High priority TC DP0 (Network control)
High priority TC DP0 (Network control)
High priority TC DP0 (Network control)
High priority TC DP0 (Network control)
w (x)
BigIron RX Series Configuration Guide
53-1001810-01