3Com WXR100 3CRWXR10095A manual Using the dscp Option, Using the precedence and tos Options

400CHAPTER 19: CONFIGURING AND MANAGING SECURITY ACLS

Table 34 lists the CoS values to use when reassigning traffic to a different priority. The CoS determines the MAP forwarding queue to use for the traffic when sending it to a wireless client.

Table 34 Class-of-Service (CoS) Packet Handling

WMM Priority	CLI CoS Value to
Desired	Enter
Background	1 or 2
Best effort	0 or 3
Video	4 or 5
Voice	6 or 7

Using the dscp Option

The easiest way to filter based on DSCP is to use the dscp codepoint option. The following commands remap IP packets from IP address

10.10.50.2that have DSCP value 46 to have CoS value 7 when they are forwarded to any 10.10.90.x address on Distributed MAP 4:

WX1200# set security acl ip acl2 permit cos 7 ip 10.10.50.2

0.0.0.010.10.90.0 0.0.0.255 dscp 46 success: change accepted.

WX1200# set security acl ip acl2 permit any success: change accepted.

WX1200# commit security acl acl2 success: change accepted.

WX1200# set security acl map acl2 ap 4 out success: change accepted.

Using the precedence and tos Options

You also can indirectly filter on DSCP by filtering on both the IP precedence and IP ToS values of a packet. However, this method requires two ACEs. To use this method, specify the combination of precedence and ToS values that is equivalent to the DSCP value. For example, to filter based on DSCP value 46, configure an ACL that filters based on precedence 5 and ToS 12. (To display a table of the precedence and ToS combinations for each DSCP value, use the display qos dscp-tablecommand.)