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3Com Switch 7750 Series
Command Reference Guide – ACL Chapter 1 ACL Commands
1-23
To define the CoS value, you can directly input a value ranging from 0 to 7, or input a
keyword listed in the following table.
Table 1-16 Description of CoS value
Keyword CoS value in decimal CoS value in binary
best-effort 0 000
background 1 001
spare 2 010
excellent-effort 3 011
controlled-load 4 100
video 5 101
voice 6 110
network-management 7 111
Description
Use the rule command to define an ACL rule.
Use the undo rule command to delete an ACL rule.
Before you can delete a rule, you must specify the rule ID. If you do not know the rule
ID, you can view it by using the display acl command.
In the case that you specify the rule ID when defining a rule:
z If the rule corresponding to the specified rule ID already exists, you will edit the
rule, and the modified part in the rule will replace the original content, while other
parts remain unchanged.
z If the rule corresponding to the specified rule ID does not exists, you will create
and define a new rule.
z The content of a modified or created rule must not be identical with the content of
any existing rule; otherwise the rule modification or creation will fail, and the
system will prompt that the rule already exists.
If you do not specify a rule ID, you will create and define a new rule, and the system
will assign an ID for the rule automatically.
Example
# Define an ACL to deny the packets with the source MAC address being
000d-88f5-97ed, the destination MAC address being 011-4301-991e, and the 802.1p
priority being 3, to pass.
<3Com> system-view
[3Com] acl number 4000