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TOPIC: Router connection problem

Router connection problem 10 years 4 months ago #26285

I have a problem regarding routers. Below is my diagram



I have 3 routers. My base network is 192.168.1.0 and im using this network to subnet into VLSM and i already created 3 LANs. [LAN 1, LAN 2, LAN 3]

Is it the routers connection must use same subnet or can be different?? I couldn't ping host from router 0 to host in router 2. But i can ping host from router 0 to host router 1.

When i ping it shows "destination host unreachable"

What could it be the issue? I confident that i assign correct IP.
Is it the routers connection must be under same subnets or can be diffrerent?

Re: Router connection problem 10 years 4 months ago #26286

  • S0lo
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The image is not so clear. If you could post your packet tracer .pkt file it would be much easier to look into it.
Studying CCNP...

Ammar Muqaddas
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www.firewall.cx

Re: Router connection problem 10 years 4 months ago #26287

Hi, finally i can ping to all hosts from any LAN!!
Below is my diagram. However i have one doubt. Why I cannot use /30 subnets for all my router serial connections??


That's the problem that make me unable to connect to all host. The problem have been solved by changed to /29 subnets for all router serial connections. Why is like that?

www.savefile.com/files/1571362

Re: Router connection problem 10 years 4 months ago #26290

  • S0lo
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When I set the masks to /30 it works!!. From which to which were you pinging?

fixed file is here: www.downloadtaxi.com/d/1211718283
Studying CCNP...

Ammar Muqaddas
Forum Moderator
www.firewall.cx

Re: Router connection problem 10 years 4 months ago #26291

Hi, First of all thank u very very much for your kind help!!!

Well, my previous configuration as below:

Router 0
s0/0 192.168.1.81/30
s0/1 192.168.1.86/30

Router 1
s0/0 192.168.1.82/30
s0/1 192.168.1.89/30

Router 2
s0/0 192.168.1.90/30
s0/1 192.168.1.85/30


**The serial connection between Router 0 [s0/0] and
Router 1[s0/0] works fine and can ping with that LAN networks.

**But other connection wont works for me.

Can u help me to clarify this?

Thanks.

Re: Router connection problem 10 years 4 months ago #26293

  • S0lo
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Router 2 configuration is flipped. It should be like this:

Router 2
s0/1 192.168.1.90/30
s0/0 192.168.1.85/30
Studying CCNP...

Ammar Muqaddas
Forum Moderator
www.firewall.cx
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