Connecting 2 networks query
Posted on 2004-07-30
Existing Network (1)
1 x 3Com 24-port 10/100 switch
2 x Windows NT Servers (1 of which is a DC)
10 x PCs running mixture of W2K and WXP
4-port Draytek 2600W ADSL router (set as default gateway)
2 x Cisco 1600 series ISDN routers (to access remote client networks)
2Mb internet access via Draytek router
New Network (2)
1 x Dell 24-port 10/100 switch (+2 gigabit ports)
2 x W2K servers (1 of which is a DC)
3Com 24-port 10/100 hub
Network 1 is using the ip range of 212.270.75.64/255.255.255.192
Network 2 is using the ip range of 10.10.1.0/255.255.255.0
Have physically connected the 2 networks by connecting both switches together. In an attempt to get both networks to talk to each other, I have brought in my Netgear DG834G 4-port adsl switch/router. This router is currently connected to the 3Com switch.
Network 1 will eventually become redundant, and the PCs moved over; but needs to be operational at the same time as Network 2 so that we can perform various tests before going ‘live’ on Network 2.
Although we did not keep the public IPs for Network 1 (we changed ISP), they are only used internally. We need to keep this ip range until testing is complete – reason is that some of our customers have restricted access to their systems using these IPs. Until we get all of our customers to change their security to use IPs from our new network, some client PCs will need to remain on the old network for support purposes.
I have played with getting both networks to see each other today with no joy. I have tried to access the internet from Network 2, again no joy. It would also appear that since the Netgear has sat on the network, each time a PC boots up in the old network, it is getting assigned IPs from the new network (presumably because Network 2 is winning the DHCP battle due to it having more powerful servers than Network 1) – I thought this a little strange though seeing as the PC was logging into the existing domain (PLATO) and not the new domain (LIVE).
I may not be able to answer any questions until Monday (like info on router set-up, etc.), but if you stack up your questions/suggestions, I’ll check them out and respond.