See the 7210 SAS-Mxp, R6, R12, S, Sx, T Router Configuration Guide for command descriptions and syntax information to configure router interfaces.
ALA48>config>router# info
#------------------------------------------
echo "IP Configuration"
#------------------------------------------
...
interface "if1"
address 10.2.2.1/24
exit
interface "if2"
address 10.49.1.46/24
port 1/1/34
exit
interface "if3"
address 10.11.11.1/24
exit
...
#------------------------------------------
ALA48>config>router#