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Weird issue where i can only ping certain devices on other subnet - need help

tobi7647
Level 1
Level 1

 

So I have this school project that I'm almost done with, but I just noticed a problem, where all the pcs can ping each other just fine, I can also ping all interfaces on my routers without issue. But when I try to ping my DNS server or my Webserver from my pcs "BorgerPC 1 - BorgerPC 3" in my 192.168.11.0 network I get the error "Host is unreachable". 

I tried using traceroute and it stops at my "router2" at the port where my "switch2" is connected...

I do apologize if this is a very simple or dumb question, I'm still really new at this and I just started, but I really need help. Thx. 

I've added a few screenshots for you all, also a zip file containing my packet tracer project

1 Accepted Solution

Accepted Solutions

Hello,

 

the problem was simply that you had added a static route with an extra subnet mask bit. Your networks have a /28 mask, but you added static routes with /29 masks. Changing the masks of the static routes solved the issue. Attached the working file.

 

Router1(config)#no ip route 192.168.11.0 255.255.255.248 192.168.9.2
Router1(config)#ip route 192.168.11.0 255.255.255.240 192.168.9.2

 

Router2(config)#no ip route 192.168.10.0 255.255.255.248 192.168.9.1
Router2(config)#ip route 192.168.10.0 255.255.255.240 192.168.9.1

 

View solution in original post

2 Replies 2

Hello,

 

the problem was simply that you had added a static route with an extra subnet mask bit. Your networks have a /28 mask, but you added static routes with /29 masks. Changing the masks of the static routes solved the issue. Attached the working file.

 

Router1(config)#no ip route 192.168.11.0 255.255.255.248 192.168.9.2
Router1(config)#ip route 192.168.11.0 255.255.255.240 192.168.9.2

 

Router2(config)#no ip route 192.168.10.0 255.255.255.248 192.168.9.1
Router2(config)#ip route 192.168.10.0 255.255.255.240 192.168.9.1

 

Hey thank you, this fixed it. I'll keep this is mind going forward with my future school work and projects in general.

I'll go and fix it on my own too, just so I learn more from it as well. Thank you again, happy new year whenever you get there.