1. Questions about routing with PPP and subnetting
I have half a class C to play with, and I need to use ONE host on this
network as a dialin PPP gateway with as much as 8 analog modems.
The 1/2 class C, as well as the remotes will have to access the
Internet.
Do the remote_via_PPP hosts HAVE to be on a different subnet (carved
from the 1/2 class C address I have)?
* * * hypothesis #1
Right now, I have this:
Network address: aaa.bbb.ccc.128
Netmask: 255.255.255.128
Should I subnet the whole shebang like this:
LOCALNET
Network address: aaa.bbb.ccc.128
Netmask: 255.255.255.192
REMOTENET
Network address: aaa.bbb.ccc.192
Netmask: 255.255.255.192
meaning that I should put all my hosts on the first half of my address
block (from 129 to 190, excluding the net and broadcast addresses) with
a netmask of aaa.bbb.ccc.192 ?
* * * hypothesis #2
But I don't want to waste so many addresses, so a best way would be to
instead use a smaller subnet as a remote network, say like:
REMOTENET
Network address: aaa.bbb.ccc.240
Netmask: 255.255.255.240
and make three other subnets at aaa.bbb.ccc.192, 208 and 224?
* * * In any cases,
in the pppd connect command parameters to initiate the PPP connection,
should I avoid specify any IP addresses for the PPP links?
If not, which address should I use? Do they have to fit within my
current C address block (if they do, do they have to have their own
subnet mask?), or they can be picked out of thin air (meaning they could
very well impinge on currently used addresses somewhere else in the
world)?
--------------- Pour la Republique Francaise du Quebec -------------------
In the French version of "2001: A Space Odyssey",
the last word uttered by HAL is "GOD"...
~~ Last dive: the SCUBA olympic pool, 15 mfw (yes, fifteen meters deep) ~~
Marc Dufour - [\] ACUC6 31874 - TDI CD-0197 - http://www.accent.net/emdx
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