Network slow down

[The Grim Reaper]

Hi all,

I'm running 2 PC's with XP + SP2, connected by a NetGear ADSL router - which
contains a 100 Mbps 4 port switch.
In the last few weeks, I've noticed a dramatic slow down in LAN transmission
speeds.
I have not tweaked any settings to do with the network - that I'm aware of.
If I copy a large file - a gig or so - Windows used to tell me "4 minutes
remaining... " and off it went.
Now, if I copy the same sort of size, I get 15 minutes of waiting time.
I've used a multitude of network monitors and other tools, but Task
Manager's networking tab has given the best information (!!) - telling me
that only 15% to 18% of the 100Mbps bandwidth.
I'm pretty sure that everything's connected at 100 Mbps full duplex on the
router, a further switch, both PC's and an occasionally connected laptop.

1) Anyone recommend any software that gives a clear view of what's going on
with a LAN?

2) I've been told by friends that "networks randomly slowing down" is a
sign of switches "wearing out" - which as an engineer I find hard to
believe - anyone read about/seen/heard of anything like that??

3) Are there any decent tweakers anyone can recommend to "reset" the
Windows parameters back to default (MTU, TCP/IP parameters, LANManServer
settings, etc.) ??

Thanks for any help.

__________________________________________
The Grim Reaper

 

[The Grim Reaper]

OK... I've been playing with a few suggestions...
These are the results of an ipconfig /all .....

Windows IP Configuration
Host Name . . . . . . . . . . . . : XXXXXXXX
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
<------- what?!? Isn't that a bit wrong?!!?
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Grim's LAN:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast
Ethernet NIC
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Tuesday, 25 October 2005
21:10:59
Lease Expires . . . . . . . . . . : Wednesday, 26 October 2005
21:10:59

Tunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling
Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling
Pseudo-Interface
Physical Address. . . . . . . . . : C0-A8-00-07
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:192.168.0.7%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

Where the smeg did tunnelling adapters come from!!?!? Anyone got any idea
how to get rid of them?!!?

Cheers
______________________________________________
The Grim Reaper

 

[Audun]

Have you installed IPv6?

Audun

OK... I've been playing with a few suggestions...
These are the results of an ipconfig /all .....

Windows IP Configuration
Host Name . . . . . . . . . . . . : XXXXXXXX
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown <------- what?!? Isn't
that a bit wrong?!!?
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Grim's LAN:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8139/810x Family
Fast Ethernet NIC
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Tuesday, 25 October 2005
21:10:59
Lease Expires . . . . . . . . . . : Wednesday, 26 October 2005
21:10:59

Tunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling
Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling
Pseudo-Interface
Physical Address. . . . . . . . . : C0-A8-00-07
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:192.168.0.7%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

Where the smeg did tunnelling adapters come from!!?!? Anyone got any idea
how to get rid of them?!!?

Cheers
______________________________________________
The Grim Reaper

 

[The Grim Reaper]

Yes, I have... many many many months ago. But I've never seen the tunneling
adaptors before.

You think re-installing or just un-installing IPv6 would help?? Come to
think of it... just cos I've got it installed on 3 machines on this network,
is it actually doing anything?!!?
________________________________________________________________
The Grim Reaper

 

[The Grim Reaper]

Just for other people's information...

I uninstalled TCP/IP v6 completely, and noticed a good increase in LAN
traffic speed.
Around 60% bandwidth as opposed to 20%, when copying several large folders
of varying size, containing various size files, in parallel via Explorer.

Now does anyone know why v6 would slow down a network?? Is it cos it's
conflicting with v4??
_______________________________________
The Grim Reaper