250 Configuring Switch Informationw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Defining MAC based ACLsThe Add ACE to MAC Based ACL page allows network administrators to define a MAC- basedACL. For an explanation of ACLs, see "Defining IP based ACLs."To open the Add ACE to MAC Based ACL page, select Switch→Network Security→MAC basedACL.Figure 7-10. Add ACE to MAC Based ACLThe Add ACE to MAC Based ACL page contains the following fields:ACL Name — User-defined ACL.New ACE Priority — ACE priority, which determines which ACE is matched to a packet on a first-match basis.Source MAC Address—Matches the source MAC address from which packets are addressed to theACE.Wild Card Mask — The source MAC address wildcard mask. Wild cards are used to mask all orpart of a source MAC address. Wild card masks specify which bits are used and which bits areignored. A wild card mask of FF:FF:FF:FF:FF:FF indicates that no bit is important. A wildcard of00.00.00.00.00.00 indicates that all the bits are important.For example, if the source MAC address E0:3B:4A:C2:CA:E2 and the wildcard mask is00:3B:4A:C2:CA:FF, the first two bits of the MAC are used, while the last two bits are ignored.Destination MAC Address — Matches the destination MAC address to which packets areaddressed to the ACE.Wild Card Mask — The destination MAC address wildcard mask. Wild cards are used to mask allor part of a destination MAC address.
