System information

Configuring Interfaces and TCP/IP Features
5-5
net-mask is the network mask of the IP network, on which the interface is
associated.
For example:
MOT(config-if)#ip address 10.10.10.135 255.255.255.0
6. To optionally configure a secondary IP address for an interface use the ip address
secondary command, in Interface Configuration mode, as shown below:
MOT(config-if)#ip address <A.B.C.D> <net-mask> secondary
where:
A.B.C.D is the IP address of the BSR interface designated for the loopback
interface.
net-mask is the subnetwork mask of the IP network, on which the interface is
associated.
secondary optionally designates the IP address as a secondary ip address.To
specify additional secondary IP addresses include the keyword secondary
after the IP address and subnet mask.
For example:
In the sample below, 198.108.1.127 is the primary address and 172.45.7.17 is
a secondary address for Ethernet 0/0.
interface ethernet 0/0
ip address 198.108.1.127 255.255.255.0
ip address 172.45.7.17 255.255.255.0 secondary
7. To verify that the information was entered correctly, use the show
running-config command in Interface Configuration mode as shown below:
MOT(config-if)#show running-config
Note: A secondary IP address can be used in some implementations as the
loopback interface. There are special options for configuring a secondary IP
address on the cable interface. Refer to “Subneting DHCP Clients on the
Cable Interface” on page 6-40 for more information.