asked on

Cisco 877W router - help setting up secondary network

Hi

I don't have any Cisco experience, but I decided to ditch my consumer grade ADSL routers and replace it with Cisco 877W. I managed to configure almost everything via SDM, so wireless works and I'm online using NAT. The bit where I got stuck is a secondary IP range - my ISP allocated me a block of 16 public ip addresses, which I use for IP cameras, VoIP phones etc... I need to configure the Cisco 877 to be aware of that and to simply route the traffic thru (no firewall) - but I'm pulling my hair out and I just don't know how to do it. Please help before I hang myself!

Thanks, Maurice

td_miles

Do you want to route the IP addresses through to internal devices (so that they have real IP addresses) or do one-to-one NAT so that they have NATed real IP addresses ?

If you want to simply route them through, then just give your router a second IP address that is from this subnet on it's internal interface and then give your devices IP addresses from the subnet as well. Point the devices to the router IP address as the default gateway. Obviously this will mean that you might have both real & private IP addresses on your internal network, I'm not sure if this is what you want ?

Are you instead perhaps wanting to achieve a DMZ style configuration where you have a seperate segment from your internal LAN that has the real addresses ?

ASKER CERTIFIED SOLUTION

td_miles

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial