Asus GigaX2024SX - Manual (Page 340)

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Therefore, any inbound frames that do not have priority tags will be placed in
queue 0 of the output port. (Note that if the output port is an untagged member of
the associated VLAN, these frames are stripped of all VLAN tags prior to
transmission.)
Example
The following example shows how to set a default priority on port 3 to 5:
queue cos-map
This command assigns class of service (CoS) values to the priority queues (i.e.,
hardware output queues 0 - 3). Use the no form set the CoS map to the default
values.
Syntax
queue cos-map queue_id [cos1 ... cosn]
no queue cos-map
• queue_id - The ID of the priority queue.
Ranges are 0 to 3, where 3 is the highest priority queue.
• cos1 .. cosn - The CoS values that are mapped to the queue ID. It is a
space-separated list of numbers. The CoS value is a number from 0 to 7,
where 7 is the highest priority.
Default Setting
This switch supports Class of Service by using four priority queues, with Weighted
Round Robin queuing for each port. Eight separate traffic classes are defined in
IEEE 802.1p. The default priority levels are assigned according to
recommendations in the IEEE 802.1p standard as shown below.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• CoS values assigned at the ingress port are also used at the egress port.
• This command sets the CoS priority for all interfaces.
Example
The following example shows how to map CoS values 0, 1 and 2 to egress queue
0, value 3 to egress queue 1, values 4 and 5 to egress queue 2, and values 6 and
7 to egress queue 3: