Feature Example - Cisco Catalyst 2000 Configuration Handbook

172 Cisco LAN Switching Configuration Handbook

Feature Example

This example shows the configuration for protocol filtering. This example enables proto-
col filtering. It then sets the Fast Ethernet ports 5/1 through 5/6 to enable IP traffic to
pass without being filtered and blocks all other traffic. This example also configures ports
5/7 to 5/8 to enable only IPX traffic. In the following example, ports 5/9 to 5/10 enable
IP and IPX traffic only if the ports detect an IP or IPX client on the specific port and
enable all other traffic to be forwarded:
Switch(config)# protocol-filter
Switch(config)# interface fastethernet 5/1
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/2
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/3
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/4
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/5
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/6
Switch(config-if)# switchport protocol ip on
Switch(config-if)# switchport protocol ipx off
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/7
Switch(config-if)# switchport protocol ip off
Switch(config-if)# switchport protocol ipx on
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/8
Switch(config-if)# switchport protocol ip off
Switch(config-if)# switchport protocol ipx on
Switch(config-if)# switchport protocol group off
Switch(config-if)# interface fastethernet 5/9
Switch(config-if)# switchport protocol ip auto
Switch(config-if)# switchport protocol ipx auto
Switch(config-if)# switchport protocol group off