Configuration Guide User guide

1982 FastIron Configuration Guide
53-1002494-02
Configuring QoS mapping configuration
FastIron X Series devices
FastIron X Series devices require the use of an ACL to honor DSCP-based QoS for routed traffic in
the Layer 3 image, or for switched traffic in the Layer 2 image. To enable DSCP-based QoS on these
devices, apply an ACL entry such as the following.
Brocade(config)#access-list 101 permit ip any any dscp-cos-mapping
NOTE
Use the bridged-routed keyword in the ACL to honor DSCP for switched traffic in the Layer 3 image.
Refer to “Enabling ACL support for switched traffic in the router image” on page 1733.
NOTE
The access-list 101 permit ip any any dscp-cos-mapping command is supported on the SX-FI48GPP
interface module. For more information on QoS queues for the SX-FI48GPP interface module, refer
to “Queues for the SX-FI48GPP interface module” on page 1972.
Trust DSCP for the SX-FI48GPP, SX-FI-24GPP,
SX-FI-24HF, SX-FI-2XG, and SX-FI8XG modules
On the following modules, trust DSCP can be enabled on a per-port basis:
• SX-FI48GPP
• SX-FI-24GPP
• SX-FI-24HF
• SX-FI-2XG
• SX-FI-8XG
Each port on the supported modules corresponds to a front-end panel port. By default, trust VLAN
priority is enabled.
NOTE
For all ports in the other FastIron SX modules, ACL should be used to implement the trust DSCP
mode.
For example, to enable trust DSCP on interface ethernet 1/48 on the SX-FI48GPP module, enter
the following command.
[no] trust dscp
To disable the configuration, use the no form of the command.
Configuring QoS mapping configuration
You can optionally change the following QoS mappings:
• DSCP to internal forwarding priority
• VLAN priority (802.1p) to hardware forwarding queue
The mappings are globally configurable and apply to all interfaces.