Another one for the IT boys (network problems)

[Indiana_Jones]

Hey guys, got a bit of a problem, here's the situation:

Hae a combined router and modem, and have 3 PCs plugged into it.

When the first 2 PCs (both running XP) are plugged it the net works fine.

But the moment we plug the third one (Running Vista *shudder*) the net dies.

Now the network itself seems to still work etc, just the internet dies/goes incredibly slow.

Any ideas guys?

Cheers

-Indy

[MattRSK]

I have had this problem. Could never figure it out. Hope that helps.

[Indiana_Jones]

I have had this problem. Could never figure it out. Hope that helps.

lol thanks Matt

-Indy

[paddy]

Okay, well to start with I am going to ask you a whole bunch of questions:

1) What happens if the Vista PC is connected by itself (without the other machines)?
2) How are you measuring "speed"?
3) Does the slowdown affect only the internet or PC<->PC transfers (you may need to configure file sharing to confirm this one).
4) Do the lights on your router start flashing a whole lot more when you connect the Vista machine?
5) Does the slowdown happen immediately?
6) Are you using DHCP on the router - could the Vista machine be using an IP address that is already assigned? Check all three machines and make sure they are different (and different to the router as well).
7) Does it mater which ports the machines are plugged into? Does re-arranging the machines yield exactly the same results?
8) Is it possible the Vista machine is just busy downloading updates? What happens if you leave it connected overnight?

None of the above is going to solve your problem, but the answer will help to narrow it down.

P.

[Usarka]

Is it turned on?

[paddy]

Is it turned on?

You referring to Indy?

[Usarka]

You referring to Indy?

It might be his pr0n server.

[ManDownUnder]

IP conflict

[Usarka]

Turn off ip-sex or IPv6 or something like that. Still think you need to reboot.

[Indiana_Jones]

Okay, well to start with I am going to ask you a whole bunch of questions:

1) What happens if the Vista PC is connected by itself (without the other machines)?

The net doesn't work on it when it's solo

2) How are you measuring "speed"?

Well I say it's slow as it doesn't load or takes a few mintues to load google

3) Does the slowdown affect only the internet or PC<->PC transfers (you may need to configure file sharing to confirm this one).

It only affects the internet as far as I can see (you may need to tell me how to check for sure)

4) Do the lights on your router start flashing a whole lot more when you connect the Vista machine?

Yes, yes they do flash more

5) Does the slowdown happen immediately?

yep, the moment i put it in the shit hits the fan and goes fine the moment i pull it out

That sounds dirty lol

6) Are you using DHCP on the router - could the Vista machine be using an IP address that is already assigned? Check all three machines and make sure they are different (and different to the router as well).


The router settings inform me DHCP server is "on"

7) Does it mater which ports the machines are plugged into? Does re-arranging the machines yield exactly the same results?

Switching ports makes no difference

8) Is it possible the Vista machine is just busy downloading updates? What happens if you leave it connected overnight?

I doubt that

None of the above is going to solve your problem, but the answer will help to narrow it down.

P.

Hope that can shed some light. Cheers mate

-Indy

[oldguy]

Ive got 2 PCs running XP and 1 running Vista on my home network and have no problems, sorry don't know how to fix yours.

I am disappointed in Vista thou, got sucked into the hipe, I have to do all my iso file, mounting/burning on XP, why I need the network to transfer files between machines.

[paddy]

Hi Indy,

With all three machines connected can you run the following on each machine and copy/paste the output here:

C:\> ipconfig /all
C:\> route print

You will need to run these at the "command prompt". This is probably easiest to get to by going "Start->Run" and then typing "cmd" and pressing okay. Not sure where Start->Run lives under Vista off-hand.

Based on your answers it's most likely that you have an IP conflict. IP addresses are like the postal address of your machine(s). The router will have a fixed address and will assign addresses to clients using DHCP. Without seeing the output of the ipconfig I would guess that the Vista machine is also configured with a fixed address - most likely the same one as the router.

[Indiana_Jones]

Well only 1 XP machine is on atm (other one is off and roommate is sleeping, but this issue is still happening with just one XP and one vista)

XP machine ipconfig report:


Windows IP Configuration

Host Name . . . . . . . . . . . . : andrew
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : Belkin

Ethernet adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : TP-LINK 11b/g Wireless Adapter
Physical Address. . . . . . . . . : 00-21-27-F3-42-5E

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Atheros AR8121/AR8113 PCI-E Ethernet
Controller
Physical Address. . . . . . . . . : 00-22-15-17-B8-F5
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
Lease Obtained. . . . . . . . . . : 27 September 2009 14:34:03
Lease Expires . . . . . . . . . . : 19 January 2038 16:14:07


XP machine 'route print':

================================================== =========================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 21 27 f3 42 5e ...... TP-LINK 11b/g Wireless Adapter - Packet Schedule
r Miniport
0x10004 ...00 22 15 17 b8 f5 ...... Atheros AR8121/AR8113 PCI-E Ethernet Control
ler
================================================== =========================
================================================== =========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.3 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.2.0 255.255.255.0 192.168.2.3 192.168.2.3 20
192.168.2.3 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.2.255 255.255.255.255 192.168.2.3 192.168.2.3 20
224.0.0.0 240.0.0.0 192.168.2.3 192.168.2.3 20
255.255.255.255 255.255.255.255 192.168.2.3 192.168.2.3 1
255.255.255.255 255.255.255.255 192.168.2.3 2 1
Default Gateway: 192.168.2.1
================================================== =========================
Persistent Routes:
None



And the vista ipconfig:


Windows IP Configuration

Host Name . . . . . . . . . . . . : Ben-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : Belkin

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : Realtek RTL8168B/8111B Family PCI-E Gigab
it Ethernet NIC (NDIS 6.0) #2
Physical Address. . . . . . . . . : 00-1A-4D-58-87-3A
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a1d0:e2db:ffcc:9a86%9(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, 27 September 2009 2:28:29 p.m.
Lease Expires . . . . . . . . . . : Wednesday, 3 November 2145 9:56:48 p.m.
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8168B/8111B Family PCI-E Gigab
it Ethernet NIC (NDIS 6.0)
Physical Address. . . . . . . . . : 00-1A-4D-58-87-38
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 6:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:cf2e:3096:283b:1c9:3f57:fdfd(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::283b:1c9:3f57:fdfd%10(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : Belkin
Description . . . . . . . . . . . : isatap.Belkin
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


And for the Vista route print:

================================================== =========================
Interface List
9 ...00 1a 4d 58 87 3a ...... Realtek RTL8168B/8111B Family PCI-E Gigabit Ethe
rnet NIC (NDIS 6.0) #2
8 ...00 1a 4d 58 87 38 ...... Realtek RTL8168B/8111B Family PCI-E Gigabit Ethe
rnet NIC (NDIS 6.0)
1 ........................... Software Loopback Interface 1
10 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface
13 ...00 00 00 00 00 00 00 e0 isatap.Belkin
19 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
================================================== =========================

IPv4 Route Table
================================================== =========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.2 20
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
169.254.0.0 255.255.0.0 On-link 192.168.2.2 30
169.254.255.255 255.255.255.255 On-link 192.168.2.2 276
192.168.2.0 255.255.255.0 On-link 192.168.2.2 276
192.168.2.2 255.255.255.255 On-link 192.168.2.2 276
192.168.2.255 255.255.255.255 On-link 192.168.2.2 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.2.2 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.2.2 276
================================================== =========================
Persistent Routes:
None

IPv6 Route Table
================================================== =========================
Active Routes:
If Metric Network Destination Gateway
10 18 ::/0 On-link
1 306 ::1/128 On-link
10 18 2001::/32 On-link
10 266 2001:0:cf2e:3096:283b:1c9:3f57:fdfd/128
On-link
9 276 fe80::/64 On-link
10 266 fe80::/64 On-link
10 266 fe80::283b:1c9:3f57:fdfd/128
On-link
9 276 fe80::a1d0:e2db:ffcc:9a86/128
On-link
1 306 ff00::/8 On-link
10 266 ff00::/8 On-link
9 276 ff00::/8 On-link
================================================== =========================
Persistent Routes:
None





-Indy

[paddy]

Okay. There's nothing wrong with your IP (v4) configuration. At this stage I would recommend disabling IPv6 on the Vista machine. I don't know where that's configured off hand but it will be somewhere in the Network settings.

P.

[YellowDog]

Indy mate, this is nice and easy to sort out (once you find the adapter configuration properties).

The 'ipconfig/all' advice was good however all you need to do is to establsh the address ranges.

You need to look at the other computers settings and then give the Vista unit a unique IP (in the same range), identical subnet mask, same gateway, same DNS AND hey presto.

If you are stuck let me know and I'll pop round and sort it out for you.

The only caution I would advise you of is that a DHCP server will not give out the same IP address twice. If connecting it screws your network, you may have a nasty little virus on your vista unit.