Cant ping between pc's in different networks

[morno05305]

so i'm new to packet tracer-  i have 1 pc, ip: 10.0.0.1, default gateway: 10.0.0.254.

the pc is connected to a switch which is connected to a router (the connection port in the router has the default gateway ip: 10.0.0.254).

the same scenario is in the other side, pc with ip: 20.0.0.1, default gateway: 20.0.0.254 connected to a switch which is connected to a router (in the connection port- ip: 20.0.0.254).

i connected the two routers and gave them ip's on the connection ports: 30.0.0.1 and 30.0.0.2.

i also used RIP for dynamic routing, for the first one- i configured with version 2 and network 10.0.0.0, network 30.0.0.0.

and the second one- version 2, network 20.0.0.0, network 30.0.0.0.

i am trying to ping from one pc to the other, but it straight away fails and says- arp request timeout..

can you please help me? i have no clue what i'm missing.

[Martin L]

you can attach your PT file here for us to investigate. note that file must be in a zip format.

arp request timeout ? double check interfaces and their connections. check switch and switch ports.  are they in proper vlan?

do routers exchange routes via RIP?  can you ping default gateway? do trace to other PC, how far it reaches?

Regards, ML
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[morno05305]

The file is at work, when i get there i'll try to attach the file. what do you mean by interfaces? both of the pc's need to be in the same vlan in order to ping between them? are any of the switch's need to be in trunk mode?

[Martin L]

are interfaces that should be UP, are actually UP UP state?  if router has several interfaces, make sure you using correct one (one configured).  no trunk is needed if you have just 1 switch between PC and router but those links should be in the same vlan (PC and router). 

no, PCs do not need to be on the same vlan since you have a router between PCs.  PC on vlan X wants to talk to PC on vlan Y, you need a router or L3 switch to do routing.

Check IP and default gateway on PC. Check subnet mask of PC and router.  Can PC ping its own router side?  aka 20.0.0.1 pings its default gateway with 20.0.0.254 ?   If yes, then move to PC pinging the other side of router, I think 30.0.0.254. 

Regards, ML
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[Richard Burts]

It would be helpful to see the output of these commands from both routers

show ip route

show ip interface brief

show arp

[sunoarun1976]

I tried the same situation and it worked for me.

Please check the routing table and see if you can find the route to all the networks. I had to set the gateway to the last resort to reach the 20 network.