We have 7 Bonded T1 circuits connecting our office to internet. Speed test show 7000kb to 8000kb up and down even with LAN connected.
The problem that exist is that web pages are slow to switch from one to another. Once you are on a page it is very fast. For example if your on CNN.com the page is very fast, but if you then got another page say MSNBC, or ESPN it takes a while to start loading the page. Once it loads page is very fast.
Sounded like slow DNS to me so I checked all DNS on Windows domain, tried not using forwarder and doing root lookups and changed DNS forwarders to faster DNS servers. All of which had no apparent effect.
I have tested at the ISP router with LAN disconnected and the problem seems to exist there as well. Of course the ISP points to speed test and says nothing is wrong.
Anyone have any ideas about what could be happening and how I would express this to the ISP?
Anyone have any free tools they would suggest to diagnose this further. Speed test seem to do fine, but this is more of page change latency. I had a hard time figuring out what the users were complaining about at first, but there is defiantly something wrong. A home DSL or cable circuit switches pages more quickly even with IE.