CISCO PCKT Networking

miaarmy98

Hey, I need help! Urgent! ):

There seems to be a problem when i tried to ping a computer from another. Currently in my topology, I connected two routers together, one switch to one router, and one PC to one switch. The ip addresses are all okay, none of them overlaps however, I don't understand why I cannot ping the other computer. When I tested to ping the G port of the router, it was still okay. When I moved on to the S port though, I wasn't able to pass it through. Does anyone know why?

These are the ip address that I used:

pc1
ip 139.40.0.2 (255.255.248.0) gateway = 139.40.28.33
router1
gport 139.40.0.1 (255.255.248.0) s0/0/0 139.40.28.33
pc2
ip 139.40.8.2 (255.255.248.0) gateway = 139.40.28.34
router2
gport 139.40.8.1 (255.255.248.0) s0/0/0 139.40.28.34

miaarmy98

wait sorry, I managed to ping the s ports but when i tried to ping the opposite router, it doesnt work):

dontstop

A quick guess without looking at the rest of your configuration would be that you've got no routing protocol or static routes configured... correct? Run a "show ip route" on router1, do you see 139.40.8.0/21? Router1 will only know about the directly connected (configured networks) of 139.40.0.0/21 & 139.40.24.0/21. Because the 139.40.8.0 isn't directly connected to Router1 nor is 139.40.0.0 directly connected to Router2 they will need a routing protocol to learn about those networks connected to neighbouring routers.

You'll either need to configure a static route or configure a dynamic routing protocol like RIP, EIGRP or OSPF. The simplest way to get connectivity would be static routes like this:

router1:
ip route 139.40.8.0 255.255.248.0 139.40.28.34

router 2:
ip route 139.40.0.0 255.255.248.0 139.40.28.33

Give that a try

miaarmy98

I tried as you suggested but I still couldnt ping one computer to another

dontstop

Could you post your packet tracer configuration as a pkt?

miaarmy98

https://drive.google.com/file/d/0B6NmsrYIgjdMa3dxVnNqWFJKUFE/view?usp=sharing

click on the link. I've saved it to drive

trac0de

Seems like the file doesn't exist anymore.
Could you share the packet tracer file so we can have a look your topology
SCRAP that i manage to download the file it was just me hehe

Mr.Robot255

Have you checked default gateways on the PCs

not sure if you uploaded the correct lab but the lab you shared is 5 router 5 switches + PCs

i didn't check it all but none of the PCs have default gateways i stopped there.

trac0de

Like Mr.Robot said PCs haven't got the Default gateway and routing tables need updating as they do not contain routes to all subnets.