display security acl 429

The IP precedence and ToS fields use 7 bits, while the DSCP field uses only 6 bits. Following the DSCP field is a 2-bit ECN field that can be set by other devices based on network congestion. If you are filtering based on DSCP value, you need two ACEs to ensure that the ACL matches regardless of the value of the seventh bit. Use the first ACE to match on the precedence and ToS values corresponding to the DSCP value. Use the second ACE to match on the same precedence value but on the ToS value plus 1. (For an example, see the “Using ACLs to Change CoS” section of the “Configuring and Managing Security ACLs” chapter in the Wireless LAN Switch and Controller Configuration Guide.

Examples — The following command displays the table:

WX-1200#display security acl dscp

DSCP

TOS

precedence

tos

dec hex

dec

hex

 

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

0

0x00

0

0x00

0

0

1

0x01

4

0x04

0

2

2

0x02

8

0x08

0

4

...

0x3f

252

0xfc

7

14

63

See Also

„set security acl on page 439

display security acl Displays a summary of security ACLs that are committed — saved in the running configuration and nonvolatile storage — or a summary of ACLs in the edit buffer.

Syntax display security acl [editbuffer]

Defaults — None.

Access — Enabled.

History — Introduced in MSS Version 3.0.