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New Contributor

Point to Point configuration for Comcast Cable Help

So here is my problem.  I can ping from my laptop ( to all the router inter faces in Router 1 & 2 and to the Workstation on the other side (  I can ping from Workstation ( to all router interfaces in Router 2 & 1.  But that is it, I cannot ping Laptop (  I am attaching both configs & a Network Diagram

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Re: Point to Point configuration for Comcast Cable Help

I think that your problem is that you are using a supernet and thereby causing an overlap of networks . ie if the network is the host would be 10.1 thru


Honored Contributor
Honored Contributor

Re: Point to Point configuration for Comcast Cable Help

You have some duplicate static routes that don't look right.

On MAINP2PTMV remove:

ip route

ip route

On TMVP2PMain remove:

ip route

What is the default gateway of your laptop?

On the layer 3 switch do you have the following static route? If not, you should.

ip route

Your "Network" document shows a /23 mask of for VLANs 1 and 2, subnets 172.16.0.x and 172.16.1.x. These should be /24 or The configuration on eth 0/1 of MAINP2PTMV is correct so this may just be a documentation error, but all interfaces on all devices on these two VLANs and subnets should be /24.

There is also something odd that you have multiple layer 2 VLANs 11, 15,19, 23, and 27 for the same layer 3 subnet 172.16.10.x/23 and multiple layer 2 VLANs 13, 17, 21, and 25 for the same layer 3 subnet 172.16.12.x/23. I'm not sure what you're trying to accomplish here.