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Joined: Sun Mar 06, 2011 8:51 am

PErformancy horrific over PPTP

Wed May 18, 2011 8:02 am

Anyone an explanation? New phenomenon supposedly.

The performance is horrific over PPTP. I try using multiple using nth routing to distribute traffic (1 pptp, 2 uplinks, from my office to a data center, but even with turning off all those rules and just using one PPTP link it sucks.

Equiment is a Mikrotik 450 G on my end, cable modems (2) and a Mikrotik 1100 AH in the data center.

* The line supposedly is ok, everyone keps telling me.
* Speedtest.NET not using PPTP works fine, too. I get excctable bandwidth numbers as it should be.
* THe moment I put up PPTP things deteriorate.

The idea is to run all traffic over the PPTP to give better bandwidth, but at the moment it is in joke territory.

I am lucky enough to have a high quality bandwidth test application ;) I get a financial data feed from a company in the US and the client tracks everything, from jitter to packet loss.

* Using non-pptp they start their historical downloads when I ask for an update of the local files with 7mbit, their max speed before their limit kicks in, the connection is very nice, no packet loss (0 per 1000 packets) ;)
* Running over PPTP... I am lucky to get 100kbit download speed for the archive. I get network warning signs from their client. I get a packet loss measured of 1.1% - 2.5% which kills their transfer speeds, constant resend log entries.
* Running locally from the data center (same AH involved) - same as with no PPTP, perfect line.

Again, this is without nth and all that playing around ;) Just a PPTP connection between two mikrotiks.

Anyone an idea? Traffic shaping for GRW from my host? I am at a loss how to get a better diagnose as I dont really have access to the equipment between (i.e. the internet).

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