WinXP added to existing Win2K small home net

[mapperboy]

Detailed Post...

I reimaged a damaged win2k machine to XP Pro(decided to
bite the bullet upon a suspected virus corruption-
repartitioned and reformated HD # 1 therefore I believe it
to be sanitary for a fresh install to XP O/S.

Now, Setup at home is:
1) Linksys 4 port router/switch connected via Ethernet to
3Com DSL adapter then to my Telco's ISP. Linksys setup as
a DHCP server. Default addresses obtained from Linksys
(192.168.1.100 to desktop and 192.168.1.101 to laptop)
show up nicely in IPCONFIG on corresponding machines.

2) Primary home desktop PIII 733, 512 Ram, 20 + 80 GB
Maxtors. TCP/IP network properties set to full Obtain
Automatically.

3) Company IBM Thinkpad laptop which I plug in and out of
home, or work LAN and which is domain registered to my
company's corp domain (not workgroup), TCP/IP network
properties also set to Obtain Automatically.

4)Various home lan scanners, printers; one via XPs USB one
through XPs LPR-LPD prot to an old EPS-2 Lantronix print
server. BTW, the test prints flowed-through the Lantronix
perfectly the first time after inital LaserJet4 driver and
protocol setup.

Now, the crunch: I cannot, after hours of trials, Ping the
laptop from the desktop nor the desktop from the laptop.
Protocols on both laptop and desktop are bound to MS
Client Networks, File and Print Sharing and TCP/IP. Had
NetBEUI installed but just removed it from both machines.

ICP is NOT activated on XP and Linksys appears to have No
ports blocked or filtered.

What gives here? When both machines were Win2K they could
ping and file-share with no problem and no special set-up.

-mapperboy

 

[chron]

Do they both have the same gateway?

 

[Guest]

-----Original Message-----
Do they both have the same gateway?
.
Thanx for responding,

Yes, they are both showing 192.168.1.1 which is also the
ip of the Linksys admin utility pages.
Both show a subnetmask of 255.255.255.0
I have set the DNS assignment range in the Linksys to
start at 192.168.1.100 so the main desktop is assigned
that ip and the laptop comes in at 192.168.1.101.
I'm beginning the think that XP and the Linksys don't
cooperate the same at Win2K and the Linksys.
One of MS's troubleshooting tech notes says that if the
machines can ping themselves (which these can), the
network adapters are nominally working and the gateways
are the same, that they router must be blocking ports.
Everything remained as it was in my case when I switched
to XP but I have now upgraded the Linksys firmware last
night because some Linksys notes regarding XP said to look
for an enable UPnP (Universal Plug and Play) check box on
the Password screen. My old firmware didn't display that.
Now I have that enabled on the Linksys. The machines still
can't each other.
Are you familiar with the Authentication tab on the Local
Area Network Connections dialog? It's not present in
Win2K or older MS O/S. Never had ME so I don't know about
that one. It has various authentication setting that look
suspicious.