Cisco IR 1101 - DSL connection

[aparna0123]

Please give me a solution how do I configure.

Set up :    DSL broadband<---->WAN port [Cisco Router 1100 ISR ]LAN port<---------->Customer Switch

I have broadband IP details

ip address 108.1.1.89  

gateway 108.1.1.90 

subnet mask /29

How to i configure wan port and lan port so that customer can use 5 usable IPs

WAN interface should connect to broadband and be assigned a public IP.

LAN interface should pass the public subnet to the customer switch.

Kindly provide a solution how do i configure the at layer 3 so that customer can access the network. 

Customer has shared Private IP , lets say 192.168.1.0/24 network

Also , please help me with any alternate solution , do i have to assign /29 subnet public IP at LAN end so that customer can use it. Or I can use NAT/PAT so that customer can use the IPs. ? Need help with config and optimum solution.

[paul driver]

Hello
You can use PAT with a Nat pool to accommodate your multiple public ip range

Example:
Int dialer x
ip nat outside

int x/x
description LAN
ip nat inside

ip access-list standard 10
permit ip 192.168.1.0 0.0.0.0 any

ip nat pool  ISP 108.1.1.91 108.1.1.94 prefix-length 29
ip nat inside source list 10 pool ISP overload

ip route 0.0.0.0 0.0.0.0 dialer x 108.1.1.90

[shambhu.kumar]

Hello aparna0123,

Need some clarity here, 

Has service provide allocated /30 IP address for WAN ? If you are using copper 1GE WAN interface, What would be the point to point IP  at your end of WAN interface and service provider end ? Not sure are you using cellular interface or copper 1GE WAN interface?

you can configure NAT with share IP pool 192.168.1.0/24 and need to provide what is the  NAT outside interface IP to complete the configuration.