Changing the cos –> internal forwarding priority, Mappings – Brocade BigIron RX Series Configuration Guide User Manual

Page 567

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BigIron RX Series Configuration Guide

489

53-1002484-04

Configuring the QoS mappings

18

DSCP-Priority map: (dscp = d1d2)

d2|

0

1

2

3

4

5

6

7

8

9

d1

|

-----+----------------------------------------

0

|

1

0

1

1

1

0

0

0

5

1

1

|

6

1

1

1

1

1

4

2

2

2

2

|

2

2

2

2

2

3

3

3

3

3

3

|

3

3

0

4

4

4

4

4

4

4

4

|

7

5

5

5

5

5

5

5

3

6

5

|

6

6

6

6

6

6

6

7

7

7

6

|

7

7

7

7

For information about the rest of this display, refer to

“Displaying QoS configuration information”

on

page 490.

Syntax: [no] qos-tos map dscp-priority <dscp-value> [<dscp-value>...] to <priority>

The <dscp-value> [<dscp-value>...] parameter specifies the DSCP value ranges you are remapping.
You can specify up to seven DSCP values in the same command, to map to the same forwarding
priority. The first command in the example above maps priority 1 to DSCP values 0, 2, 3, and 4.

The <priority> parameter specifies the internal forwarding priority.

Changing the CoS –> internal forwarding priority
mappings

This mapping is used when the trust level is set to CoS. In addition to determining the
internal-forwarding priority of a packet, the value also determines the outbound 802.1p value if
CoS marking is enabled. To change the
CoS –> internal forwarding priority mappings for all the CoS ranges, enter commands such as the
following at the global CONFIG level of the CLI.

BigIron RX(config)# qos-tos map cos-priority 7 4 3 6 5 2 1 0

These commands configure the mappings displayed in the CoS to forwarding priority portion of the
QoS information display. To read this part of the display, select the first part of the CoS value from
the d1 column and select the second part of the CoS value from the d2 row. For example, to read
the CoS to forwarding priority mapping for CoS value 24, select 2 from the d1 column and select 4
from the d2 row. The mappings that are changed by the command above are shown below in bold
type.

BigIron RX(config-if-e10000-1/1)# show qos-tos

...portions of table omitted for simplicity...

COS-Priority map:

COS: 0 1 2 3 4 5 6 7

------------------------------------------------

Priority: 0 1 2 3 4 5 6 7

For information about the rest of this display, refer to

“Displaying QoS configuration information”

on

page 490.

Syntax: [no] qos-tos map cos-priority <prio0> <prio1><prio2><prio3><prio4><prio5><prio6>

<prio7>

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