New to subnetting.

[GlenJohnson]

I'm thinking about subnetting my network. About 250 users, and I'd like to speed up the speed by doing this. Think that the engineers could be slowing the network down so if I put them on they're own subnet, might speed things up. I went to

http://www.learntcpip.com

and they had a link to subnetting. I have a class b network, so I realize the first two octects are the network id, and the last two are the network id. Something I read prompted me to change my subnet mask on my w2k pro to 240.0.0.0. I can get to any ip address I can think of on the internet, and I can browse the network neighborhood. Why on earth is this working, when I've heard subnetting is so hard? Thanks. Glen A. Johnson
Microsoft Certified Professional
gjohn76351@msn.com

"Nothing can be done quickly and prudently at the same time."
Publilius Syrus (1st century B.C.); Roman writer.

 

[jeter]

that 24.0.0.0 address looks like a rouing address such as EIGRP from Cisco which is 24.0.0.10 you say that you can surf the net, or you running NAT? try this go t0

http://www.assembly.net/callerid

run the test and tell me what ip it comes back with or at least say if it different. Jeter@LasVegas.com
Fisher CCNA,(Routing)

 

[jgercken]

With a wrong subnet mask and a properly configured default gateway you will be able to reach any ip outside your subnet (except those you just included in your network by changing the mask so drastically). Because you will be using a different network broadcast address you won't be able to use IP to connect with any local devices (unless you have static arp entries). You may still be able to get to them using netbios but that has nothing to do with IP.


FYI 224.0.0.10 is the address EIGRP uses. It is part of the class D block reserved for multicast.

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