SMC Networks SMC6824M manual 104, Configuring a MAC ACL Command Attributes

CONFIGURING THE SWITCH

CLI – This example adds three rules:

1.Accept any incoming packets if the source address is in subnet 10.7.1.x. For example, if the rule is matched; i.e., the rule (10.7.1.0 & 255.255.255.0) equals the masked address (10.7.1.2 & 255.255.255.0), the packet passes through.

2.Allow TCP packets from class C addresses 192.168.1.0 to any destination address when set for destination TCP port 80 (i.e., HTTP).

3.Permit all TCP packets from class C addresses 192.168.1.0 with the TCP control code set to “SYN.”

Console(config-ext-acl)#permit 10.7.1.1 255.255.255.0 any	4-124
Console(config-ext-acl)#permit 192.168.1.0 255.255.255.0 any
destination-port 80

Console(config-ext-acl)#permit tcp 192.168.1.0 255.255.255.0 any control-flag 2 2

Console(config-std-acl)#

Configuring a MAC ACL

Command Attributes

•Action – An ACL can contain any combination of permit or deny rules.

•Source/Destination Address Type – Use “Any” to include all possible addresses, “Host” to indicate a specific MAC address, or “MAC” to specify an address range with the Address and Bitmask fields. (Options: Any, Host, MAC; Default: Any)

•Source/Destination MAC Address – Source or destination MAC address.

•Source/Destination Bitmask – Hexadecimal mask for source or destination MAC address.

•VID – VLAN ID. (Range: 1-4093)

•VID Mask – VLAN bitmask. (Range: 1-4093)

•Ethernet Type – This option can only be used to filter Ethernet II formatted packets. (Range: 600-fff hex.)

A detailed listing of Ethernet protocol types can be found in RFC 1060. A few of the more common types include 0800 (IP), 0806 (ARP), 8137 (IPX).

3-104