Zyxel OLT2412 [156/326] Port by port queuing commands

Zyxel OLT2412 [156/326] Port by port queuing commands
Chapter 22 Queuing Method
OLT2412 User’s Guide
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an equal amount of bandwidth, and then moves to the end of the list; and so on, depending on the
number of queues being used. This works in a looping fashion until a queue is empty.
Weighted Round Robin Scheduling (WRR) uses the same algorithm as round robin scheduling, but
services queues based on their priority and queue weight (the number you configure in the queue
Weight field) rather than a fixed amount of bandwidth. WRR is activated only when a port has
more traffic than it can handle. Queues with larger weights get more service than queues with
smaller weights. This queuing mechanism is highly efficient in that it divides any available
bandwidth across the different traffic queues and returns to queues that have not yet emptied.
22.2 Port by Port Queuing Commands
The following section lists the commands for this feature.
22.3 Port by Port Queuing Command Examples
This example configures WFQ on XE port 2 in slot 3 and assigns weight values
(1,2,3,4,12,13,14,15) to the physical queues (Q0 to Q8).
Table 80 Port by Port Queuing Commands
COMMAND DESCRIPTION
queue priority <0-7> level <0-7>
Sets the IEEE 802.1p priority level-to-physical queue mapping.
priority <0-7>: IEEE 802.1p defines up to eight separate
traffic types by inserting a tag into a MAC-layer frame that
contains bits to define class of service. Frames without an explicit
priority tag are given the default priority of the ingress port.
level <0-7>: The OLT has up to 8 physical queues that you can
map to the 8 priority levels. On the OLT, traffic assigned to
higher index queues gets through faster while traffic in lower
index queues is dropped if the network is congested.
interface port-channel <aid>
Enters sub-command mode for configuring the specified ports.
spq
Sets the switch to use Strictly Priority Queuing (SPQ) on the
specified ports.
wrr
Sets the switch to use Weighted Round Robin (WRR) on the
specified ports.
wfq
Sets the switch to use Weighted Fair Queuing (WFQ) on the
specified ports.
weight <wt1> <wt2> ... <wt8>
Assigns a weight value to each physical queue on the OLT. When
the OLT is using WRR or WFQ, bandwidth is divided across
different traffic queues according to their weights. Queues with
larger weights get more service than queues with smaller
weights. Weight values range: 1-15.
OLT2412(config)# interface port-channel xe-3-2
OLT2412(config-interface)# wfq
OLT2412(config-interface)# weight 1 2 3 4 12 13 14 15

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