Can't ping from host to host on simple network

alejob

I have two routers(A and connected to each other with a serial cable, they are using the 192.168.1.0 network. I have two PC's(host H1 and H2), each connect to a router through a console cable(for configuration) and Ethernet ports.
I'm sure I configured everything ok. Interfaces are up, protocols are up, I'm using RIP. Show ip route command shows that I have all networks up and running.

H1 connected to A
H2 connected to B

Now, when I ping this is what happens.
From router A I can ping everywhere.
From router B I can ping everywhere except for H1
From H1 I can't ping E0 on B and I can't ping H2(Both are on the same network)
From H2 I can't ping S0 and E0 on A and can't ping H1.

Now I'm supossed to have a hub between router A and H1 but I don't have a router so I just connected it through a crossover cable. I don't think that could be a problem since its just a hub. Any idea of what I'm doing wrong?

alejob

Ok, I just figured it out. The PCs have two NICs, I disabled the ones that connected to the Internet and it worked. Duh! I've been at it for days now, I new it was something stupid. Is there anyway to have both enabled without this happening?

I had the same network up but with OSPF as the routing protocol and I got the same problems except I got some "network unreachable" responses instead of "request timeout" when I pinged. Must be the same thing though.

Webmaster

Yes you can. The problem is that the default gateway is set to to Internet. You will need to add static routes on the MH pc that point to the internal networks.

Check out this post for more detailed information:
www.techexams.net/forums/viewtopic.php?p=18239#18239

rossonieri#1

i dont think that you can ping on s0 -> that is because s0 dont have any mac address ( it's the wan side of interface ). the only interface on a router that you can ping is ethernet ... so be sure to check your pc subnet -> it has to be match with e0 subnet... and if you want to configure much simpler way : set a static or a default route command to both network... have a try.

Ten9t6

dedy darmawan wrote:

i dont think that you can ping on s0 -> that is because s0 dont have any mac address ( it's the wan side of interface ). the only interface on a router that you can ping is ethernet ... so be sure to check your pc subnet -> it has to be match with e0 subnet... and if you want to configure much simpler way : set a static or a default route command to both network... have a try.

You can ping serial interfaces...as long as they are up and have an Ip assigned...and the source of the ICMP packet knows how to get to the serial interface (static routes / Routing Protocol)

alejob

Cool, thanks!


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