Brocade BigIron RX Series Configuration Guide - Manual (Page 565)

BigIron RX Series Configuration Guide 487
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Configuring the QoS mappings
18
Enabling marking
This command enables marking of the 802.1p field or the DSCP field in the ToS byte of an IP
header.
Syntax: [no] qos-tos mark cos | dscp
The cos | dscp parameter specifies the type of marking.
• cos – The device changes the outbound packet’s 802.1p priority value to match the results of
the device’s QoS mapping from the specified trust level.
• dscp – The device changes the outbound packet’s DSCP value to match the results of the
device’s QoS mapping from the specified trust level.
Configuring the QoS mappings
The Brocade device maps a packet’s 802.1p or DSCP value to an internal forwarding priority. The
default mappings are listed in
Table 96 through Table 99 . You can change the following mappings
as described in this section:
• CoS –> DSCP
• DSCP –> DSCP
• DSCP –> internal forwarding priority
• CoS –> internal forwarding priority
The mappings are globally configurable and apply to all interfaces.
NOTE
In a configuration where you have marking enabled with the trust level set to CoS, you must enter
the ip rebind-acl all command at the global CONFIG level of the CLI after making the mapping
change. This applies to mappings that are configured using the qos-tos map command.
NOTE
The mappings are globally configurable and apply to all interfaces.
Changing the CoS –> DSCP mappings
The CoS –> DSCP mappings are used if the trust level is CoS and DSCP marking is enabled.
To change the CoS –> DSCP mappings, enter commands such as the following at the global
CONFIG level of the CLI.
BigIron RX(config)# qos-tos map cos-dscp 0 33 25 49 17 7 55 41
BigIron RX(config)# ip rebind-acl all
This command configures the mappings displayed in the COS-DSCP map portion of the QoS
information display.
BigIron RX(config-if-e10000-1/1)# show qos-tos
...portions of table omitted for simplicity...