internet connection sharing performance issue

[Rimu Atkinson]

something very odd is happening. i have a small network (a couple of windows
and a linux box) which share a 56k modem on a windows 2000 computer.

up until 2 days ago, everything was fine. then for no apparant reason, the
performance of the internet connection (from the client PC's only) has
completely gone to crap. about half the time, the clients can still access
web pages, but 404 errors and incredable slowness are crippling. it kinda
works, but it's unusable. the server has no problem accessing the web at
full speed, it's just the clients.

after trying various things i have found that it's the internet connection
sharing on the server (win2k) machine that's gone; i put in a proxy and all
the clients lapped it up, they could access the internet at full speed
again, with no problems. i ran virus scanners, spyware removers, etc all of
which came up with nothing. so i'm certain there's some problem with the
server's internet sharing.

unfortunatly running a proxy isn't viable, as i have to turn off the web
server (also on the win2k box) for it to run.

has anyone encountered this problem before?

thanks

Rimu

 

[Matt Hickman]

after trying various things i have found that it's the internet connection
sharing on the server (win2k) machine that's gone; i put in a proxy and all
the clients lapped it up, they could access the internet at full speed
again, with no problems. i ran virus scanners, spyware removers, etc all of
which came up with nothing. so i'm certain there's some problem with the
server's internet sharing.

Run perfmon and check the counters for the network interface on your
ICS machine. Check the event log for problems. Run IPCONFIG/ALL
from the command line and verify that the returned settings are
what they are suppose to be.

 

[Rimu Atkinson]

Run perfmon and check the counters for the network interface on your

ICS machine. Check the event log for problems. Run IPCONFIG/ALL
from the command line and verify that the returned settings are
what they are suppose to be.

below is the entire output from ipconfig /all. it doesn't contain anything
out of the ordinary, AFAIK

Windows 2000 IP Configuration

Host Name . . . . . . . . . . . . : rimu
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : D-Link DFE-500TX PCI Fast
Ethernet A
dapter (Rev B/C)
Physical Address. . . . . . . . . : 00-80-C8-F6-28-EC
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . :

PPP adapter Paradise:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 203.79.81.130
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 203.79.81.130
DNS Servers . . . . . . . . . . . : 203.96.152.4
203.96.152.12
NetBIOS over Tcpip. . . . . . . . : Disabled

the 'system' event log has recently started showing this error occasionally.
it's timing doesn't seem to relate to client's requests for the internet,
though.

Event Type: Error
Event Source: ipnathlp
Event Category: None
Event ID: 32003
Date: 15/03/2004
Time: 2:30:50 p.m.
User: N/A
Computer: RIMU
Description:
The Network Address Translator (NAT) was unable to request an operation of
the kernel-mode translation module. This may indicate misconfiguration,
insufficient resources, or an internal error. The data is the error code.
Data:
0000: 1f 00 00 00 ....


?????

 

[Aks]

I am paradise cable internet and have started experiencing the same
problem in the last 2-3 days. Seems like it is a problem with
Paradise? If anyone else has similar problem and has solved it then
would love to hear from you.

Thanks
Aks

 

[Guest]

IT MAY BE WORTH READING THIS

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The CP2100 is basically a "dumb" DSL modem with no user http interface so you can not browse the modem for status etc other than watch the lights. I found it is always the "RD" (receive data) light that fails to respond whilst the TD (transmit data) light always functions. The link and power LCD's remain constantly on. So it is the requested "Recieve Data" that is failing to function

Note: Driverguide which is perhaps the largest driver/manufacturer linking site does not even mention COM21 or the modem