3Com 3CRUS2475 - Page 77

Configuring ACLs 77
■ 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.
■ VLAN ID — Matches the packet's VLAN ID to the ACL.
■ CoS — Classifies traffic based on the CoS tag value.
■ CoS Mask — Defines the CoS mask used to classify network traffic.
■ Ethertype — Provides an identifier that differentiates between
various types of protocols.
■ Action — Indicates the ACL forwarding action. Possible field values
are:
■ Permit — Forwards packets which meet the ACL criteria.
■ Deny — Drops packets which meet the ACL criteria.
■ 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 .