I'll wade in. Can't get too technical, but I assume the mask works by ANDing
the bits, so when an ip address is checked, 255.255.255.0 is FF.FF.FF.00 in
hex or 11111111.11111111.11111111.00000000 in binary, which when you AND
with anything, returns the original first 3 segments unchanged but can
return a different 4th segment.  This has the effect that all nodes on the
network must have the same values for the first 3 of the 4 ip address
segments.  You could read more about tcp/ip to see why there are 4 segments
and what each segment represents.  If your not familiar with binary, 255 is
the highest value you can store in a byte.  ANDing is the logical operation
that tests for true or false: 1 AND 1 = 1 (true) 1 AND 0 = 0 (false) so any
value ANDed to 1 will return unchanged, but a value ANDed to 0 may change.
(0 AND 0 = 0 (false) 0 AND 1 = 0 (false)).
For instance an ip address of 192.168.1.252 is
11000000.10101000.00000001.11111100 which after an AND operation with
255.255.255.0 would be
11000000.10101000.00000001.00000000

-----Original Message-----
From: NICHOLAS BACETTI [mailto:[log in to unmask]]
Sent: Monday, December 03, 2001 8:32 AM


Just wanted to thank everyone for the great suggestions and comments.

As Tom T. suggested, I went back and changed the subnet mask from
10.20.30.40 to 255.255.255.0, and everything is working just fine.  Network
neighborhood is displaying the other computer on the network.  Also, I can
now ping by name, as well as, by IP address (the latter wasn't a problem,
the former was).  This was a good point brought up by Dave G.  Finally, as
suggested by most, I did find the IP and subnet mask numbers, listed with
the second adapter under the "PPP adapter".

If anyone would care to comment, what was wrong with the 10.20.30.40 subnet
mask number.  Is this part of a standard governing networks?  Again thanks
to all...Nick

>>> [log in to unmask] 11/29/01 10:14 AM >>>
You sound like you know how to set up tcp/ip, but your symptoms also sound
like an incorrect ip or mask entries.  The first 3 groups of the ip address
should be the same, and the mask should be 255.255.255.0
The workgroup under the identification tab needs to be the same on all
computers, I assume you are not using a domain or a server.
The reason winipcnf may not display your settings is the first adapter it
displays is 'PPP adapter'.  Use the drop down arrow to select your hardware
adapter.  Now your ip and mask settings should appear.  It will only release
and reset if you are obtaining an ip address automatically.
Tom Turak

                         PCBUILD's List Owners:
                      Bob Wright<[log in to unmask]>
                       Drew Dunn<[log in to unmask]>