HP Cisco MDS 9120 Cisco Nexus 5000 Series Command Reference Release 4.0(1a)N2( - Page 368
deny (MAC
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deny (MAC) Chapter 6 Security Commands Send comments to [email protected] deny (MAC) To create a Media Access Control (MAC) access control list (ACL)+ rule that denies traffic matching its conditions, use the deny command. To remove a rule, use the no form of this command. [sequence-number] deny source destination [protocol] [cos cos-value] [vlan vlan-id] no deny source destination [protocol] [cos cos-value] [vlan vlan-id] no sequence-number Syntax Description sequence-number source destination protocol cos cos-value vlan vlan-id (Optional) Sequence number of the deny command, which causes the switch to insert the command in that numbered position in the access list. Sequence numbers maintain the order of rules within an ACL. A sequence number can be any integer between 1 and 4294967295. By default, the first rule in an ACL has a sequence number of 10. If you do not specify a sequence number, the switch adds the rule to the end of the ACL and assigns to it a sequence number that is 10 greater than the sequence number of the preceding rule. Use the resequence command to reassign sequence numbers to rules. Source MAC addresses that the rule matches. For details about the methods that you can use to specify this argument, see "Source and Destination" in the "Usage Guidelines" section. Destination MAC addresses that the rule matches. For details about the methods that you can use to specify this argument, see "Source and Destination" in the "Usage Guidelines" section. (Optional) Protocol number that the rule matches. Valid protocol numbers are 0x0 to 0xffff. For listings of valid protocol names, see "MAC Protocols" in the "Usage Guidelines" section. (Optional) Specifies that the rule matches only packets whose IEEE 802.1Q header contains the Class of Service (CoS) value given in the cos-value argument. The cos-value argument can be an integer from 0 to 7. (Optional) Specifies that the rule matches only packets whose IEEE 802.1Q header contains the VLAN ID given. The vlan-id argument can be an integer from 1 to 4094. Command Default A newly created MAC ACL contains no rules. If you do not specify a sequence number, the switch assigns the rule a sequence number that is 10 greater than the last rule in the ACL. Command Modes MAC ACL configuration 6-34 Cisco Nexus 5000 Series Command Reference OL-16599-01