Multiple gateways
I have a customer who has 3 vlans across different routers. The 3 vlans can access each other but not exit to the internet. The 2008 server has the local router as its gateway. There is another router on the local network that gives access
out to the internet. How do i setupo the gateways to see both the other vlans, and go out to the internet?
Thanks,
Jeff
June 10th, 2010 2:37am
Jeff, its going to be difficult to give you an exact solution based on your description. A network diagram would be most helpful.
I am understanding that there are multiple routers on the network, one which has the connection to the internet. Your question is how to provide internet access to the computers on the various VLANs. Is that correct?
Based on that information, its simply a matter of configuring the routing tables on your routers, or simply configuring each router's default gateway as the router that has the internet access. Again, its hard to say without seeing a current diagram
and knowing how the routers' routing tables are configured.
To access the internet from any VLAN, the router that is connected to the VLAN, needs to know about the other local networks and it needs to have a default gateway so it can send packets to that gateway (router) when it doesnt have a direct route.Visit: anITKB.com, an IT Knowledge Base.
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June 10th, 2010 3:20am
Hi,
Thank you for your post here.
From the description, you have:
1. 3 VLANs across routers
2. VLAN routers route traffic separately for VLANs
3. There is a another on the local site which has internet access
Agree with Jorge that you can enable internet access for VLAN servers by adding the default gateway on VLAN router(s)
to the internet access router. You can also remove the default gateway to the local router (VLAN router), add customized route to other VLANs (subnet) and set the internet access router as the default gateway. The workaround will count on the goal you want
to achieve. Could you please tell more detail about your goal?
June 10th, 2010 10:33am
Is your network somewhat like this:
VLAN1>>>Router1
Vlan2>>>Router 2
Vlan3>>>Router 3
Router 4>>Inernet.
Now, since your vlan's and router 1 to 3 can communicate with each other, that part is done. For the part where you want them to access internet, it can be done in two ways.
Way 1: Attach Router 1-3 to internal side of Router 4 and make router 4 as Default Gateway for all of them. Assuming that clients of respective VLAN use respective routers 1-3 as DG, everyone will be able to access internet.
Way 2: Your clients are connected to Router 1-3 and on the other hand, using a second NIC, they are connected to Router 4. Then, create static routes in them to use respective VLANRouter as gateway for other VLANs and make the router 4 as DG.Regards, Amit Saxena
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June 13th, 2010 7:44pm