Perfect! Just as you prescribed, this assignment works! I had tried this combination previously, but for some reason it didn't work then. Your explanation makes it make sense. I have now configured my dns/bind and am working on the httpd. Thanks for your help. Jake Brooks >From: Clayton Weaver <cgweav@eskimo.com> >To: digimix@hotmail.com >CC: linux-net@vger.rutgers.edu >Subject: Re: networking progress >Date: Thu, 27 Jul 2000 11:32:23 -0700 (PDT) > >Why not use the network and netmask that the ISP gave you? > >Hint: they are using the 3 high bits of the host octet to >subnet the Class C. > >Class C: 207.234.111.0 > 11001111.11101010.01101111.00000000 > >Subnet: 207.234.111.64 > 11001111.11101010.01101111.01000000 > ^^^ >The 010 indicated in the subnet address is part of a host >address in a Class C but part of the network address in >the subnet. > >The Class C's netmask is 255.255.255.0, or > > 11111111.11111111.11111111.00000000 > >but for the gateway router also needs to mask off those extra 3 bits to >get the network number for your subnet from the 32-bit ipv4 address, so >the netmask for your subnet is 255.255.255.224, or > > 11111111.11111111.11111111.11100000 > >What the ISP sent you are the correct network and netmask numbers >for your network configuration scripts on your linux box to access >the ISP through the gateway host. > >The range of assignable host ips in your subnet is >207.234.111.65 - 207.234.111.94. > >The ISP's gateway used the first one, 207.234.111.65, and they assigned >you the second one, 207.234.111.66. > >The lowest host ip in the subnet, last 5 bits all 0, is reserved for the >network number for the subnet, 207.234.111.64, and the highest host ip, >last 5 bits all 1, is the broadcast address for your subnet: > >207.234.111.95 > >(So you don't want to use a whole Class C network number, netmask, and >broadcast address in your linux network config scripts for the interface >that connects to the ISP when the ISP actually assigns you a Class C >subnet network number and netmask. Everyone on the other subnets doesn't >want to get your broadcast packets and vice versa.) > >There is a fine description of all of this in .pdf at > ><http://www.3com.com/nsc/501302s.html> > >Regards, > >Clayton Weaver ><mailto:cgweav@eskimo.com> >(Seattle) > >"Everybody's ignorant, just in different subjects." Will Rogers > > > ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu
