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I was trying "ping -r" command, while my system(windows Vista) is at different level of routers connected in series, and it was failing after 2 levels, i.e. upto router3 router1->router2->router3 it is giving correct result, but when I use same command at next level, i.e. router1->router2->router3->router4, then it was failing at router4.

Any idea, please let me know, thanks.

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How are these routers configured? What routes do they have? – David Schwartz Oct 1 '12 at 10:07
ping is enabled at all the routers, and all routers are connected in series. – Anand Oct 1 '12 at 10:58
Right, but how are they configured? Are the router-to-router links in different networks? Are the routers also switching? What route does router3 have to router1? Is it static? Or is some routing protocol used? – David Schwartz Oct 1 '12 at 11:00
router1 is main router, router2 is connected to router1 and router3 is connected to router2 and so on. router1<-router2<-router3 – Anand Oct 1 '12 at 11:08
Right, but how are they configured? Same network? Different networks? NAT? Static routing? Dynamic routing? – David Schwartz Oct 1 '12 at 13:06
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closed as not a real question by John Gardeniers, mulaz, Chopper3, David Schwartz, rnxrx Oct 2 '12 at 23:13

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

1 Answer

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Not all devices are configured to reply to ping. Unless you know for certain that the device you are pinging is configured to reply to a ping then this is most likely expected behaviour.

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I am using same device for ping. I have tried different routers, and also changing router at levels, ie suppose ping worked for router2 but not at router3 then I interchanged router2 and router3 and checked but same result, it after interchange router2 which was giving correct result, it not giving correct result, and router3 which was not giving correct result giving correct, this I have checked for multiple times. So there is no issue with routers. – Anand Oct 1 '12 at 9:54
It doesn't matter what device you are pinging from, this behaviour is dictated by either the target device or possibly even a router on which ping is being blocked (which is a bad thing to do in most cases). – John Gardeniers Oct 1 '12 at 9:56
Suppose I tried ping for router2 and it was success, while ping for router3 was failure, then next I interchanged router2 from level 2 to level 3 and router3 from level 3 to level, and again tried same thing and this times router3 was giving correct result, while router2 was giving wrong result. that means both router are allowing ping, but ping -r command fails after certain level ? – Anand Oct 1 '12 at 10:01

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