TBB is back to square one, incorrect speed again!
compare to this speed below:

http://www.speedtest.bbmax.co.uk/results.php?t=12977...

http://www.speedtest.net/result/1157452970.png

I give up using TBB speed test, they are [censored] and never resolved it.

ok I changed autotuning on win7 from highlyrestricted to normal (highlyrestricted caps to 256k tcp window) and now it flatlines at max speed in dumeter. There was a momentary dip tho but wasonce and a split second.

result came out as.

28.6 down and 1.02 up.

In reply to a post by Chrysalis:

the sender can also manipulate tho as they can stop announcing to certian networks to force a routing change. I never said VM are blameless, just it is not a complete one sided issue. It still raises the question how I cannot get other linx side hosts to go over that specific route and repeat the same performance issues.

How would TBB changing the advertising their network affect VM's advertising of their prefixes? The key word is advertising, one side advertises, the other side uses the best advertised path.

TBB send traffic that way because it's the best path VM offer. Each side offers a path to their network, regardless of where VM see TBB's network as being advertised from while VM continue to advertise best path through that IP address TBB will continue to send it unless they manually engineer traffic.

Have a read of the BGP guides for more information on this.

The node you are seeing in your reverse trace is:

195.66.226.22 00:90:69:07:2f:91 Telecity Bonnington House No 11 7 3 10G No Extreme

Name: linx-gw2.router.ntli.net
Address: 195.66.226.22

That is the LINX facing interface of:

Name: telc-ic-1.network.virginmedia.net
Address: 194.145.149.101

Edited by deleted (Mon 14-Feb-11 20:32:46)

nevertherless the sender can manipulate the route, I have had it done dozens of times.

interesting tho.

on the flash test, if I repepeat it, occasionalyl its slow like the java test. indicates different hosts used in some kind of round robin fashon, with one been slow. probably always used for the java test. so we defenitly need an explanation from tbb on this behaviour. also as to why tbb were willing to reroute speedtesting to fix easynet but not VM.

In reply to a post by Chrysalis:

nevertherless the sender can manipulate the route, I have had it done dozens of times.

interesting tho.

on the flash test, if I repepeat it, occasionalyl its slow like the java test. indicates different hosts used in some kind of round robin fashon, with one been slow. probably always used for the java test. so we defenitly need an explanation from tbb on this behaviour. also as to why tbb were willing to reroute speedtesting to fix easynet but not VM.

Never suggested routing couldn't be manipulated both ways - local preference is the first considered factor in BGP routing decisions.

http://www.cisco.com/en/US/tech/tk365/technologies_t...

However you did specifically use the word 'advertise' which was inaccurate, and shows that you don't understand BGP too well, no-one apart from network engineers has any need to, so I thought I'd best explain a bit.

I'm sure if they could easily resolve the VM issue they would have a long time ago, however the obvious question is why should NCUK pay for transit because VM are running a public peering interface too hot? If there was an alternative settlement free path to Easynet but no alternative option to VM that would explain the discrepancy.

Ask NCUK.

Edited by deleted (Mon 14-Feb-11 21:35:17)

fair point on the announce.

I think we really need seb or someone to reply now, as clearly tbb is capable of fast speeds to VM as shown in flash, which means we dont know if the traceroute I did is from a fast or slow tbb server.

the joys of traffic shaping, a false positive.

seems tbb port 81 speedtests are classed as p2p by VM as when i do a port 80 test it jumps up to 18-22mbit/sec range. So that will explain the improvement off peak also.

However it doesnt explain the difference between the flash and java tests still.

If we broke into the Virgin network infrastructure and fixed it we would get arrested.
It has been raised with Virgin Media at a variety of levels I believe.

Do you understand what people are trying to say to you?

pro adsl in what way?