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Connecting two vlans to 1 ISP Router Interface

Hello guys,

I'm pretty much a noob in networking so I'll try to lay out my problem as plainly as possible.

I have two Catalyst 2960 Series (48 port) switches with the newest Cisco IOS installed. There is also a Cisco 2600 Series Router which I can't manage because it's ISP managed.

Now the problem is as follows. I'd like to create two VLANs, one in the IP range 192.168.0.xxx and the other in the 192.168.1.xxx.

Now the router has a gateway IP address 192.168.1.1 .

Would it be possible to somehow connect these two VLANs with the router so that these 2 VLANs can't see each other but they can ofcourse both contact the router and exit on the internet?

Best Regards,

stipes.

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3 REPLIES 3
Rising star

Re: Connecting two vlans to 1 ISP Router Interface

Hi,

I think if you have newest version of IOS you can do static routing, refer the link

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/15.0_1_se/configuration/guide/swipstatrout.html

And look this thread

https://supportforums.cisco.com/thread/2100923

Hope it will help

Hope it will help. Best regards, Abzal
Frequent Contributor

Re: Connecting two vlans to 1 ISP Router Interface

Re:Connecting two vlans to 1 ISP Router Interface

Hello stipe
For the router to route your traffic, the gateway ip should be reachable by that subnet.
From you question it looks like you want to do nat for the 2 subnets.
So you need your isp to help you by configuring sub interfaces with your 2 network ips so that you can use them as gateway.
Also they need to put in an acl to prevent your 2 subnets from talking to each other.

Rgds/DP
pls rate helpful posts.


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