Cisco MAC filtering for Small Business / SG series

We will see how to manage mac filtering with commands line on Cisco SG switch series.

Configuration

Switch model : Cisco SG550X
Switch model : Cisco SG350X

Create ACL

Create MF01 acl

Switch(config)# mac access-list extended MF01

Allow 24:B6:FD:14:08:53 mac address

Switch(config-mac-al)# permit 24:B6:FD:14:08:53 00:00:00:00:00:00 any ace-priority 20

Allow 48:bd:0e:02:ea:41 mac address

Switch(config-mac-al)# permit 48:bd:0e:02:ea:41 00:00:00:00:00:00 any ace-priority 10

Allow 00:11:xx:xx:xx:xx mac address family

Switch(config-mac-al)# permit 00:11:00:00:00:00 00:00:FF:FF:FF:FF any ace-priority 8

Every other addresses will be denied

Switch(config-mac-al)# deny any any ace-priority 40

Associate MF01 acl to interfaces

Configure interfaces from ge1/0/4 to ge1/0/18

Switch(config)# interface range ge1/0/4-18

Apply MF01 access list to interfaces

Switch(config-if-range)# service-acl input MF01

Disassociate MF01 access list with interfaces

Switch(config-if-range)# no service-acl input MF01

Useful Commands

Show access list

Switch# show access-lists MF01
Extended MAC access list MF01
    permit  host 48:bd:0e:02:ea:41 any ace-priority 10
    permit  host 24:b6:fd:14:08:53 any ace-priority 20
    deny    any any ace-priority 40

Remove acl rule

Switch(config)# mac access-list extended MF01
Switch(config-mac-al)# no permit 24:B6:FD:14:08:53 00:00:00:00:00:00 any

Remove acl

Switch(config)# no mac access-list extended MF01

Example

Let see how to allow only 00:11 MAC addresses family and 24:B6:FD:14:08:53 host. Any others addresses will be rejected

Create access list

Switch(config)# mac access-list extended MF01

Allow 00:11:XX:XX:XX:XX family

Switch(config-mac-al)# permit 00:11:00:00:00:00 00:00:FF:FF:FF:FF any

Allow 24:B6:FD:14:08:53 host

Switch(config-mac-al)# permit 24:B6:FD:14:08:53 00:00:00:00:00:00 any

Deny any others host

Switch(config-mac-al)# deny any any

Apply MAC filtering to interfaces. Here from ge1/0/1 to ge1/0/24

Switch(config)# interface range ge1/0/1-24
Switch(config-if-range)# service-acl input MF01

Computing

Music

Misc