Bridging Two DHCP Controlled Networks Via Bridge?
Aug 4, 2012
We have 2 DHCP controlled networks at our work:
Network 1: EOC connection. We use this for Internet access, office computers, a POS server and our POS systems. Mostly windows xp and some win 7 systems. Server is Windows 2008 server, but is not controlling DHCP nor a domain. It's just a computer on the network. Directly behind the EOC box is a router using DHCP to manage a 192.168.1.x network. All computers on this network are using 192.168.1.x addresses via DHCP.
Network 2: Comes in on a separate DSL line. Primarily a Linux network controlling several linux based machines. This network has it's own router behind the DSL modem managing DHCP using 175.69.1.x (or something close to that) addresses.
Someone decided to "bridge" these networks by simply plugging each network into the same switch via Cat 5 cable. Bad idea.
The first problem we had (of course) was that the DHCP servers conflicted immediately, so we had to set half of this "mongrel" network to static IPs like 192.168.1.x, and the other computers are getting their addresses via DHCP from the 176.68.1.x network router.
This works - badly. The second router keeps "resetting" the server address on network 1, screwing up our POS systems. But we still need to access the linux machines on network 2 (via http) from the office machines on network 1.
I am thinking the solution to this issue is to place a 3rd router as a bridge between the two networks. Is this correct?
The goal is to be able to be sitting at machine 192.168.1.x on one network, open a web browser, type in a 176.67.1.x address and have the linux web-based application come up from the other network.
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Aug 4, 2012
we have 2 DHCP controlled networks at our work:
Network 1: Transparent EOC connection to Internet. Directly behind the EOC box is a router using a static (WAN) address provided from our ISP. Internally, the router uses DHCP (LAN) to manage a 192.168.1.x network. All computers on this network are using 192.168.1.x addresses via DHCP from that router - (rather, they should be). We use this for Internet access, office computers, a POS server and our POS systems. Mostly windows xp and some win 7 systems. Server is Windows 2008 server, but is not controlling DHCP nor a domain. It's just a Win 2008 computer on the network running as a "virtual box" on a VMware-based server.
Network 2: Comes in on a separate DSL line. This DSL modem is set up as a bridge. The router behind the bridge is using a static IP block (8 static IP addresses, 5 usable) from our ISP. Internally, this router uses DHCP (LAN) to manage a 175.69.10.x network (or some address similar to that). All machines on this network are using 175.69.10.x addresses via DHCP from the 2nd router. There is external VPN access to this network via one of the static IP addresses. This is routed correctly. This is Primarily a Linux network controlling several linux based machines. So, someone decided to "bridge" these two networks by simply plugging each network into the same central switch via Cat 5 cable.
The first problem we had (of course) was that the DHCP servers conflicted immediately, so we had to set half of this "mongrel" network to static IPs like 192.168.1.x, and the other computers are getting their addresses via DHCP from the 176.68.1.x network router. The second router keeps "resetting" the network, causing IP address problems on the first network, screwing up our POS system in the process. But we still need to access the linux machines on network 2 (via http) from the machines on network 1.The goal is to be able to be sitting at machine 192.168.1.x on one network, open a web browser, type in a 175.69.10.x address on the other network and have the linux web-based application come up from the machine on the second network. (We may need more services bridged besides just http.)Putting both networks on the EOC connection controlled by a single router is NOT an option.
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Aug 6, 2012
I have 2 networks.
NETWORK 1:EOC connection fro ISP going into a router (not the RV042) with a static WAN address from ISP. This router is hooked up to a switch that all the computers are connected to. All the computers on this network are using 192.168.1.x addresses. Most of these addresses are static, but the router is running DHCP in case we hook up temporary computers like laptops or client machines to this network.
NETWORK 2:DSL connection going into a router (not the RV042) with a static block of IPs from ISP. (8 IPs, 5 usable for the WAN interface, 1 static IP is being used for WAN interface). This router has a VPN connection set up for remote access to the linux machines on this network. This router is running DHCP on the LAN interface for this network with addresses 172.16.1.x. All the computers on this network are tied together with another switch, completely seperate from the 192.168.1.x network switch.
PROBLEM:We needed computers on the 192 network to be able to access computers on the 172 network. Someone decided to just run a cat 5 cable from the 192 switch to the 172 switch (not the routers, the switches). This "worked" - badly. Appearently there is a DHCP conflict (or something else going on) that was causing the router on the 172 network to try and assign addresses to the 192 network computers, and it was also "resetting" a connection about once an hour. This crashed our server on the 192 network. I disconnected that cat 5 cable between the two siwtches, and now each of the two networks are working properly, but they are now completely isolated from one another.
I need to create a bridge between the 2 networks so that machines on the 192 network can access machines on the 172 network while filtering out DHCP broadcasts from either network router to the other network. (I may need to filter out other protocols as well, but don't know yet.)So, I see 3 potential ways of doing this but don't know if they will work:
1) Can I just set up multiple subnets on the LAN interface of the RV042 and just run 2 cat5 cables from each switch on the two networks to the LAN ports of the RV042?
1a) If I do set up multiple subnets on the LAN interface of the RV042, do I need to assign the two ports to different VLANs? (I don't see any way to set each port to a specific IP address.)
2) Can I set up the 2 WAN ports on the RV042, one static for each network, and will the RV042 route traffic from 1 WAN port to the second WAN port?
3) Is there some other way I should consider setting this up?
Finally, someone mentioned that once I get the RV042 set up correctly as a bridge, I will need to route 172 addresses on the 192 network to the 192 interface of the RV042 via the DHCP router on the 192 network, and conversely, I will need to route 192 addresses on the 172 network from the DHCP router to the 172 IP interface of the RV042. I think this will be easy enough to set up in each of the DHCP routers...
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1 and others .
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server specs
intel core 2 quad q8300 2.5 ghz
6 gb ddr2 800
2 tb hdd
all based on gigabit lan will have additional network cards added for now we're doing a simple data server, but we've been pondering on how to get two separate connections to work in unison?
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I have this setup at home and I can't make wireless bridging to work with two WR740N routers.I tried 3 online tutorials and none of them worked
R1,R2,R3 = routers
The main router "R1" Is setup like this :
IP Address 192.168.100.1
DHCP enabled 192.168.100.120 - 192.168.100.150
Gateway 192.168.100.1
[code]....
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