Establishing an IP Broadcast Address The most popular IP broadcast address (and the default) is an address consisting of all ones (255.255.255.255). However, the switch can be configured to generate any form of IP broadcast address. To establish an IP broadcast address, perform this procedure: Procedure Configuring IP Unicast Routing Establishing an IP Broadcast Address Command or Action Purpose Step 10 copy running-config startup-config Example: Device#copy running-config startup-config (Optional) Saves your entries in the configuration file. Command or Action Purpose Step 1 enable Example: Device>enable Enables privileged EXEC mode. Enter your password if prompted.
Step 2 configure terminal Example: Device#configure terminal Enters global configuration mode. Step 3 interface interface-id Example: Device(config)#interface gigabitethernet 1/0/1 Enters interface configuration mode, and specifies the interface to configure. Step 4 ip broadcast-address ip-address Example: Device(config-if)#ip broadcast-address 128.1.255.255 Enters a broadcast address different from the default, for example 128.1.255.255. Step 5 end Example: Device(config)#end Returns to privileged EXEC mode. Configuring IP Unicast Routing 26