IP Router Configuration 
7705 SAR OS Router Configuration Guide 77
Modifying Interface Parameters
Starting at the config>router level, navigate down to the router interface context. 
To modify an IP address, perform the following steps:
Example: A:ALU-A>config>router# interface "to-sr1"
A:ALU-A>config>router>if# shutdown
A:ALU-A>config>router>if# no address
A:ALU-A>config>router>if# address 10.0.0.25/24
A:ALU-A>config>router>if# no shutdown
To modify a port, perform the following steps:
Example: A:ALU-A>config>router# interface "to-sr1"
A:ALU-A>config>router>if# shutdown
A:ALU-A>config>router>if# no port 
A:ALU-A>config>router>if# port 1/1/2
A:ALU-A>config>router>if# no shutdown
The following example displays the interface configuration.
A:ALU-A>config>router# info
#------------------------------------------
# IP Configuration
#------------------------------------------
interface "system"
address 10.0.0.103/32
exit
interface "to-sr1"
address 10.0.0.25/24
port 1/1/2
exit
router-id 10.10.10.104
#------------------------------------------
A:ALU-A>config>router#