Cbwfq, Cbq -37 cbwfq -37 – Avaya P580 User Manual
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Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
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80-Series QoS
before the switch services queue 5. Queue 5 must be empty before
the switch services queue 4, and so on.
For information on how to set up strict priority queueing, see
“
Setting Up Strict Priority Queueing”
CBQ
With the class-based queuing (CBQ) algorithm, you can specify a
maximum bit rate, or bandwidth, for a queue. When that bit rate is
exceeded, the switch drops all packets that exceed the bit rate.
The bit rate that you set should be the long-term average rate of
transmission. Traffic that does not exceed this rate is guaranteed
transfer.
For information on how to set up CBQ queueing, see “
* Note: Avaya recommends that you do not set a port using
CBQ as the source port or mirror port for a port mirror.
When the switch limits the bandwidth of a port, packets
are subject to random drop. If packets from a source port
or mirror port are dropped, the mirror traffic may not
match the source traffic.
CBWFQ
The class-based weighted fair queueing (CBWFQ) algorithm is a
combination of the CBQ and WFQ algorithms. CBWFQ makes more
complex management of traffic possible. Using CBWFQ, you can set:
■
The maximum bit rate.
The bit rate that you set should be the long-term average rate
of transmission. Traffic that does not exceed this rate is
guaranteed transfer.
■
Burst thresholds
■
The action that you want the switch to take when the bit rate
exceeds the maximum bit rate.
—
Drop the packets
Or
—
Forward the packets according to the weight of the queue