Stumped: desktop won't connect to Net via router / DSL while does via just DSL (but other PCs have

[trippknightly]

Well, I tried to make the subject line clear but this bears a little
explanation.

Have a WinXP desktop (HP Pavilion 8576C, kind of dated, and it's just
basic XP though SP2). It connects via DSL no problem. But when I
introduce a router, it fails.

Plus, what I think must be telling is that I'm able to use two
different models of laptop (a Toshiba & Dell) w/ XP Professional to
'net connect via the router (wired) w/o incident. They also work
wirelessly no sweat when I choose to do that too.

I've checked pretty much every parameter I can think of in TCP/IP
properties and LAN connection properties on the desktop to be alike to
those on the two laptops that work, but maybe I've overlooked something
not obvious.

Is this not uncommon? Could I just chalk it up to the vagaries of XP
(standard) or the particular 10/100 NIC I've got on the desktop?

Just seems weird that the desktop can connect to the net via ethernet &
DSL modem and yet introduce a router and it fails where others
succeed...

I realize it's probably not a wealth of info provided, but any
thoughts?

THANKS.

 

[Jim]

Well, I tried to make the subject line clear but this bears a little
explanation.

Have a WinXP desktop (HP Pavilion 8576C, kind of dated, and it's just
basic XP though SP2). It connects via DSL no problem. But when I
introduce a router, it fails.

Plus, what I think must be telling is that I'm able to use two
different models of laptop (a Toshiba & Dell) w/ XP Professional to
'net connect via the router (wired) w/o incident. They also work
wirelessly no sweat when I choose to do that too.

I've checked pretty much every parameter I can think of in TCP/IP
properties and LAN connection properties on the desktop to be alike to
those on the two laptops that work, but maybe I've overlooked something
not obvious.

Is this not uncommon? Could I just chalk it up to the vagaries of XP
(standard) or the particular 10/100 NIC I've got on the desktop?

Just seems weird that the desktop can connect to the net via ethernet &
DSL modem and yet introduce a router and it fails where others
succeed...

I realize it's probably not a wealth of info provided, but any
thoughts?

THANKS.

You don't have your router configured correctly (if at all).
Also, the firewalls need to pass ICMP packets.

Jim

 

[trippknightly]

You don't have your router configured correctly (if at all).
Also, the firewalls need to pass ICMP packets.

Jim

Thanks Jim. Your response both directly and indirectly caused a fix -
I spent hours on this yesterday and your brief $.02 led to a solve in
15 min! Here's an update for posterity. I don't doubt that it could
have been the router, but I *think* it turns out to be more general
networking configuration than router per se. For posterity, I did 3
things which together or some pieces comprised the fix. In order, I
turned off firewall, enabled RPC service and enabled DHCP Client
service. It was not until DHCP that I get IPCONFIG /RENEW command to
work correctly, so it seems like DHCP Client was necessary though
perhaps not sufficient...