Bridging 2 networks

How do I bridge 2 networks that each has an Internet connection and it's own DHCP server. I need to share files only
GaryvdoAsked:
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vtobusmanCommented:
are the 2 networks at different locations ??
If so then you need to setup a VPN to connect the 2 networks you can use a dsn router with vpn passthru on it here is a good one http://www.compgeeks.com/details.asp?invtid=DI-704P-R
this will allow you to create a vpn to the other network...

if the 2 are at the same location you would need a server with 2 net cards and enable routing between the networks or just put the files on the server with 2 netcards ( 1 net card for each network ) of corse the server would have to have a ststic ip address...

hope this get you started if you need more info please tell us how you networks are setup and if the are at the same location or different locations then we can give more detailed info...

 Good Luck
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GaryvdoAuthor Commented:
The networks are in 2 locations.  I have t-1 internet connection and a linkysys BFRSx41 in location one where the main file server is with 15 workstations and a dedicated 4 wire to the second location that has  cable modem internet service and another linksys router as the dhcp server for 10 workstations.  I have 2 xspeed 320 sdsl modems.  

t-1---linksys==bridge== linksys--cable modem
           |                           |
      10/100 switch         Wireless
           |                           |
        server               workstations
           |
       workstations

There appears to be a conflict with the 2 DHCP servers and collisions between the 2 service connections
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vtobusmanCommented:
What are you ip addresses at the locations ??
dont give them if they are public addresses...

and you Linksys boxes the ipaddress between them ?
as well as on the bridge...
 
i dont believe you have collisions going on there because the linksys boxes do not broad cast the traffic....
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GaryvdoAuthor Commented:
the cable modem provides a DHCP address to the linksys which is a NAT and I have public addresses for the T-1.  and that linksys is the NAT  I am trying to have the bridge on the NAT side of each linksys.  I may have to set it up as a DMZ server
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vtobusmanCommented:
ok on you bridge you need to have the ip addresses from the Lans you lan addresses need to be different subnets...

    Public address       192.168.0.xxx
t-1---( 216.xxx.xx.x) linksys==      bridge     == l   inksys--cable modem ( public address)
                                |                        192.168.1.xxx           |
                          10/100 switch                                    Wireless
                               |                                           Dhcp to workstations
                               |                                               192.168.1.xxx
                               
                                                                                        |
                            server                                            workstations
                    DHCP to work stations
                               |
                         192.168.0.xxx
                        workstations

then on the linksys boxes specify static routes
 192.168.1.0 to address of bridge
 192.168.0.0 to address of bridge
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vtobusmanCommented:
wow that look confussing...
  i suck at drawing...
 
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clayljCommented:
I pretty much agree with vtobusman except that the bridge needs to be a router. A bridge is a layer two device and has no IP address. To go between to different subnets requires a layer three devise (router). The Linksys BEFSR11 router will work great here.

t-1---linksys -|         ==         |- BEFSR11  -|        ==       |- linksys--cable modem
              192.168.1.1       192.168.1.2      192.168.2.2      192.168.2.1
           |                                                                                  |
      10/100 switch                                                               Wireless
           |                                                                                  |
        server                                                                     workstations
           |
       workstations

Note that the BEFSR11 has 2 ports, one on each subnet. Turn on RIP2 dynamic routing in all three routers. Be sure that all hosts have the correct default gateway address ie 192.168.1.1 or 192.168.2.1.

Larry
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clayljCommented:
I forgot, to do workgroup file sharing on a routed network you will need to set up a WINS server.

t-1---linksys -|         ==         |- BEFSR11  -|        ==       |- linksys--cable modem
              192.168.1.1       192.168.1.2      192.168.2.2      192.168.2.1
           |                                                                                  |
      10/100 switch                                                               Wireless
           |                                                                                  |
        server                                                                     workstations
           |
        WINS
           |
       workstations

This can be on your existing server or on a different host. Each host on both networks would then configure this as their WINS server.
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