3Com 3CBLSG48 User Guide - Page 71
Destination MAC Address, Destination Mask, VLAN ID, CoS Mask, Ethertype, Action
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60 CHAPTER 4: MANAGING DEVICE SECURITY mask of FF:FF:FF:FF:FF:FF indicates that no bit is important. A wildcard of 00.00.00.00.00.00.00 indicates that all bits are important. For example, if the source MAC address is E0:3B:4A:C2: CA:E2 and the wildcard mask is 00:00:00:00:00:FF, the first five bytes of the MAC are used, while the last byte is ignored. For the source MAC address E0:3B:4A:C2:CA:E2, this wildcard mask matches all MAC addresses in the range E0:3B:4A:C2:CA:00 to E0:3B:4A:C2:CA:FF. Destination MAC Address - Matches the destination MAC address to which packets are addressed to the ACE. Destination Mask - Indicates the destination MAC Address wildcard mask. Wildcards are used to mask all or part of a destination address by specifying which bits are used and which are ignored. A wildcard mask of FF:FF:FF:FF:FF indicates that no bit is important. A wildcard 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 00:00:00:00:00:FF, the first five bytes of the MAC are used, while the last byte is ignored. For the destination MAC address 0:3B:4A: C2:CA:E2, this wildcard mask matches all MAC addresses in the range E0:3B:4A:C2:CA:00 to E0:3B:4A:C2:CA:FF. VLAN ID - Matches the packet's VLAN ID to the ACE. The possible field values are 1 to 4094 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 among various types of protocols. Action - Indicates the ACL forwarding action. The options are as follows: Permit - Forwards packets which meet the ACL criteria. Deny - Drops packets which meet the ACL criteria.