P2P download very slow after replacing NIC

[Man T]

XP SP3.
My onboard NIC was faulty recently and I replaced with a 10/100 NIC.
I set to 100 Full Mode, however, the P2P is still very slow.
Any idea?
The P2P was not so slow before that.

 

[Patrick Keenan]

XP SP3.
My onboard NIC was faulty recently and I replaced with a 10/100 NIC.
I set to 100 Full Mode, however, the P2P is still very slow.
Any idea?
The P2P was not so slow before that.

If you set it to automatic, what happens?

 

[Gurpreet Singh]

Also please ensure you have the latest driver updates for your new network
card. As suggested by Patrick, try automatic. You can also take a netmon
trace to check if there are any transmission issues evident or any
retransmissions happening on the wire.

 

[Man T]

Also please ensure you have the latest driver updates for your new network

card. As suggested by Patrick, try automatic. You can also take a netmon
trace to check if there are any transmission issues evident or any
retransmissions happening on the wire.

It was set up as 'Automatic' before, now I set to 100 Full Mode. It seems
does not help.
Any tools I can use to monitor that?
The NIC I used is a generic NIC but checked with Device Manager that is
Realteck RTL8193 Family PCI Fast Ethernet NIC.
Should I goto Realteck's website?

BTW, I did not use the NIC's CD to install this NIC as XP can automatically
detect the NIC.

 

[Paul]

It was set up as 'Automatic' before, now I set to 100 Full Mode. It seems
does not help.
Any tools I can use to monitor that?
The NIC I used is a generic NIC but checked with Device Manager that is
Realteck RTL8193 Family PCI Fast Ethernet NIC.
Should I goto Realteck's website?

BTW, I did not use the NIC's CD to install this NIC as XP can automatically
detect the NIC.

Use a tool like Wireshark, to watch how the P2P tool transfers data.

http://en.wikipedia.org/wiki/Wireshark

Is it possible that a setting like the value for MTU is
affecting your transfer performance ? Perhaps packets
are getting fragmented, which slows down the overall
protocol. Maybe you manually defined MTU with the old
NIC, or your P2P software automatically made changes
to your old NIC settings for you.

I don't use P2P, so this is just a guess.

I had a problem similar to this once, with a VPN. Normal
network connections were fine, but the VPN was very
slow (4KB/sec), and I was told it had to do with
the need to fragment packets and send two pieces,
for every packet the application wanted to send.
Perhaps your P2P setup needs tuning. Check the documentation
for the P2P, to see if any TCP/IP parameters need to be
modified, for best performance.

Paul

 

[Man T]

Use a tool like Wireshark, to watch how the P2P tool transfers data.

http://en.wikipedia.org/wiki/Wireshark

Is it possible that a setting like the value for MTU is
affecting your transfer performance ? Perhaps packets
are getting fragmented, which slows down the overall
protocol. Maybe you manually defined MTU with the old
NIC, or your P2P software automatically made changes
to your old NIC settings for you.

I don't use P2P, so this is just a guess.

I had a problem similar to this once, with a VPN. Normal
network connections were fine, but the VPN was very
slow (4KB/sec), and I was told it had to do with
the need to fragment packets and send two pieces,
for every packet the application wanted to send.
Perhaps your P2P setup needs tuning. Check the documentation
for the P2P, to see if any TCP/IP parameters need to be
modified, for best performance.

Sorry, what is MTU?

 

[Paul]

Sorry, what is MTU?

http://en.wikipedia.org/wiki/Maximum_transmission_unit

What P2P tool are you using ?

Paul