Ping Issue across three routers

40 pts.
Tags:
Network troubleshooting
Ping
Routers
I have a network of three routers.Router A is pinging Router B & Router B is pinging Router C but RouterĀ A is not pinging router C.What can be the problem???

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I assume that router A is connected to router B and router router B is connected to router C. If this is the set up then you are able to ping A to B and B to C because they are on the same network. For A to ping C there needs to be a route. This can be done by adding a static route on router A and C or configuring a routing protocol on all routers.

Here’s a good article that explains how static routes are configured Cisco routers.

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800ef7b2.shtml

Discuss This Question: 5  Replies

 
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  • jinteik
    is there any firewall in between the routers? if yes there is a need for a static route to be done..
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  • Danial
    Yes Mr A is absolutely right you need to define a Route to your router. eg on configure terminal >ip route 192.168..x..x 255.x.x.x 192.168.x.x before sunbnetmask will be desired destination address
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  • Mrcyber
    Sayub,In case these routers are not directly connected, you can make use of protocol like RIP for creating a dynamic route between these routers. more info about dynamic routing with RIP in the following url (TechRepublic article) Editor's Note: Mrcyber, I've corrected the HTML to make the link clickable. Thanks!
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  • JennyMack
    Great answers here... Sayub, let us know if these answers have helped you out.
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  • Sayub
    Of course, they helped me alot and I have done it through static routing and by running protocol also. Thanks to all.........
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