At my desk I have a cable that runs from a hub at my main server (which provides my connection to the Internet). At the desk that cable goes into a small 5 port Linksys hub (a hub NOT a switch) model EFAH05W. The hub then feeds three machines. A old HP desktop running XP. My new Sony FZ running Vista and an old Sony laptop that I use for software testing also running XP.
My ISP (Cincinnati bell) has a page which allows for a speed test. The desktop and old Sony show a down speed of 4 meg plus. The Vista machine shows a down speed varying from 1 meg to 400k. I have swapped the output cables from the hub and the speeds stay the same.
On a lark I took the Sony FZ to the server and connected directly to a hub there. I got 4 meg plus!!! Went back to my desk took the cable that went from the server hub to the desktop hub and plugged it directly into the Sony FZ and got 4 meg plus. Put that cable back in as the feed to the desktop hub and took an output cable back into the Sony FZ and it dropped to 1meg again.
This is really bizarre. It is appears there is some incompatibility between my Sony FZ and this little hub. Yet the two XP machines have no issues at all. The Sony FZ can get a 4meg feed if I bypass the hub. Now my understanding of the hub technology is that it is pretty much an un-embellished pass through of the feed it receives. What am I missing here?????
Why should I need to do that when the Sony works great on other hubs or even on the cable that is currently feeding the Linksys hub?
Is there something special about the Linksys router that requires a different MTU?
BTW I spent some time in ann online Chat with tier 2 support at Linksys. They have taken ALL of their wired hubs of the "supported under Vista" list. They acknowledged there is some issue and are supposed to get back to me with some specifics. But man this is VERY strange. Especially since I can pull the cable feeding the hub and put it in the Sony and my speed is fine!