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Ping and Browse

By talib_ruhi ·
I have a few PCs on one subnet belonging to a workgroup, there are a couple of other PCs belonging to the same workgroup but on a different subnet.All the PCs are connected via a single hub and are using Windows OS.I can see all the machines on network neighborhood but can only ping the ones on the same subnet.What could be the possible explanation for this?I guess the hub has a common bus; shared bandwidth,and is a single broadcast/collision domain this should allow pinging to all the connected devices.
Thanks!
Thanks!

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by stolson In reply to Ping and Browse

Your guess is incorrect. A subnet is a layer-3 configuration. A hub (nor a switch) has no way of routing IP information. You need a router (or layer-3 switch) to do this.

Why not just put all machines on the same subnet?

Steve Olson

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by talib_ruhi In reply to Ping and Browse

Thank you for your answer!
However,I needed to know the difference as to why browsing works and ping does not altough all the devices are connected via a common physical hub.Do you mean to say that my guess of a hub having a shared bus andbeing a single collision/broadcast domain is incorrect.This a small experimental network where i like to try out such things!May be my question was not properly worded!

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by curlergirl In reply to Ping and Browse

This is the whole concept of subnetting - machines in different subnets cannot communicate directly with each other; the connection between them can only be made through IP routing. If you want to be able to communicate between/among all of the machines on your network, you need to put all of the machines on the same subnet,unless you want to add a router to your configuration. It sounds like you have a relatively small number of PCs on this network, so adding a router seems like overkill. Whatever reason you had for putting them on separate subnets, find a different solution. Hope this helps!

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by talib_ruhi In reply to Ping and Browse

Thank you for your answer!
However,I needed to know the difference as to why browsing works and ping does not altough all the devices are connected via a common physical hub which is a sinlgle broadcast/collision domain.This a small experimental network where i like to try out such things! May be my question was not properly worded!

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by stolson In reply to Ping and Browse

Ah, now I see what you are asking.

Windows OS uses the NetBEUI protocol, not TCP/IP, to register devices on the network.

You could have no IP addresses at all and still see the other machines in network neighborhood!

Since you are in a lab,I can also tell you to try this ...

If you add a router and configure it with IP correctly, you will be able to ping from subnet to subnet. But, guess what, you can not see machines on the other side of the router in network neighborhood!

Why???

NetBEUI is not a routeable protocol by itself. You have to turn on NBT (NetBEUI over TCP/IP) which "carries" the NetBEUI information across the router.

Steve Olson

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by talib_ruhi In reply to Ping and Browse

Poster rated this answer

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by talib_ruhi In reply to Ping and Browse

This question was closed by the author

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