asked on

VPN, DSL, and MTU

I have a VPN server connected to a DSL line. I connec to it from many sources. I feel that the performance is not always as good as it should be. Some functions are very quick, others are slow.

I have read that there may be a MTU issue. I am wondering if there is a way to monitor the MTU and see if packets are being fragmented. Is there some sort of packet monitor? What is the best way to troubleshoot this problems?

Thanks.

sypder

ASKER

Our VPN server has a static IP address (I believe this means we are not using PPPoE).

ASKER CERTIFIED SOLUTION

austinstace

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

SOLUTION

giltjr

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

sypder

ASKER

Yes, I am aware of ADSL. The performance is still much slower than it should be. 10 seconds to open a few line text file is pretty slow. We also have the "premium" DSL package.

Thanks for the PPPoE clarification.

I will take a look at wireshark now.

sypder

ASKER

Thanks for the wireshark link. Basically, I had about 78 packets recorded, and saw quite a few errors like:

"This is a TCP duplicate ack"

I don't see anything about broken packets, but maybe I don't know where to look.

SOLUTION

giltjr

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial