3Com 3CRUS2475 24, User Manual

Page: 77 / 333

Configuring ACLs 77
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Destination Wild Card Mask — Indicates the destination MAC
Address wild card mask. Wild cards are used to mask all or part of a
destination MAC address. Wild card masks specify which bits are used
and which are ignored. A wild card mask of FF:FF:FF:FF:FF indicates
that no bit is important. A wild card mask of 00.00.00.00.00.00
indicates that all bits are important. For example, if the destination
MAC address is E0:3B:4A:C2:CA:E2 and the wildcard mask is
00:3B:4A:C2:CA:FF, the first two bits of the MAC are used, while the
last two bits are ignored.
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VLAN ID — Matches the packet's VLAN ID to the ACL.
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CoS — Classifies traffic based on the CoS tag value.
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CoS Mask — Defines the CoS mask used to classify network traffic.
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Ethertype — Provides an identifier that differentiates between
various types of protocols.
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Action — Indicates the ACL forwarding action. Possible field values
are:
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Permit — Forwards packets which meet the ACL criteria.
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Deny — Drops packets which meet the ACL criteria.
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Shutdown — Drops packet that meet the ACL criteria, and disables
the port to which the packet was addressed. Ports are reactivated
from the
Interface Configuration Page .
2
Define the fields.
3
Click .