Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring QoS (Rev. 03)
Overview
© 2008 Foundry Networks, Inc.
Page 21 of 62
Displaying the Mapping Assignments
The
show qos priority-txq-map
command, in Privileged (Enable) mode, displays the priority
mapping.
Command Syntax
device-name
#
show qos priority-txq-map
QoS Assignment Configuration Commands
Table 10
lists the commands to configure the priority assignment.
Table 10: Priority Assignment Configuration Commands
Command
Description
qos priority
Assigns a priority level to the untagged frames arriving at the
specified interface.
qos mac
Assigns QoS priority level manually for destination MAC address
(per VLAN).
qos traffic-class
Sets the mapping of the DSCP value to CoS.
qos policy dscp
Sets the DSCP remarking policy for remarking DSCP, priority,
transmit queue and drop precedence level by DSCP and
conformance level.
qos policy priority
Sets the priority remarking policy for remarking priority and
optionally the conformance level by the transmit queue and
conformance level.
qos tx shaper
Sets the transmit rate for the transmit queue
Assigning 802.1p Priority Information on a Port
The
qos priority
command, in Interface Configuration mode, assigns a priority level to untagged
frames that arrive on at the specified interface. The
no
form of this command restores the port
priority settings to the default value of 0. The port priority value does not reflect on the tagged
frames. The priority level of the tagged frames is defined by a value, contained in the priority filed
in the 802.1q tag.
After obtaining the 802.1p priority level, the frame will be placed to a queue on the egress port of
the device, determined by the mapping of priority levels to QoS egress queues (see
Table 11
).
Table 11: Default mapping of priority levels to QOS egress queues
Priority Level
QoS Egress Queue
0 0
1 1
2 2
3 3