MHC - thanks. I shall check those out. How do I find out the MTU of the router? Homehub 3 btw. Ta.

Sorry, don't know the interface on the HH3. Have a dig around and you may find it.

In reply to a post by giggsy1977:

Good evening RobertoS! My pc is old and runs Windows xp so I have borrowed my mothers laptop which is only 18 months old and runs Windows 7. My download is pretty good and it's very stable.

I think you are saying there that the laptop has the slow upload as well?

Two suggestions.

1) Do a factory reset on the HH3. I haven't seen one, but exoect there is a reset button deep inside a (labelled) small hole. WHile the router is on, press the end of a paper-clip into there, gently but firmly, and hold it in until the lights start flashing. Then release, and wait until it sorts itself out.

2) Probably useless, unless (1) improves things. Download TCPOtimizer and let it adjust the MTU and RWIN settings on the XP computer. Don't do it on the laptop as Windows 7 is suppose to have that issue sorted. I say probably uselss, as we normally recommend this when the download on XP is poor.

RobertoS - I tried TCPOptimiser but it didn't work for me. I was then worried it may have changed some settings or values in the Homehub or modem. Perhaps the reset you suggest would wipe any changes made to the hub?

TCPOptimiser doesn't touch the Homehub or modem, only the PC.

But you should have done (MTU = 1500 if not already) in order to tune it.

Yes, the reset button will clear any changes made, although as XRaySpeX says TCPOtimizer won't have changed anything.

Didn't you do the factory reset then? I did say it was the first thing to try. Routers can get mixed up.

In reply to a post by XRaySpeX:

TCPOptimiser doesn't touch the Homehub or modem, only the PC.

But you should have done (MTU = 1500 if not already) in order to tune it.

1492 is the MTU advised by BT and is auto set in their business hubs.

Yes, I know but if you want TCPOptimiser to do its work properly you should 1st unrestrict MTU so it can find the biggest unfragmented packet (as per its instuctions).

However, if you know a priori that it cannot exceed 1492 then I suppose that's OK. but there was no harm in lifting it to 1500 and putting it back to the value TCPOptimiser found as it intended.

As you know TCP Optimiser will not change the settings in the router and it could already be set to 1492.

In reply to a post by XRaySpeX:

However, if you know a priori that it cannot exceed 1492 then I suppose that's OK. but there was no harm in lifting it to 1500 and putting it back to the value TCPOptimiser found as it intended.

Infinity uses PPPoE so the maximum MTU is 1492 - even if you set 1500, the router will probably lower it when it switches to PPPoE mode. (My Draytek lets me set 1500 on DHCP and PPPoA connections but limits to 1492 when I choose PPPoE)..

Edited by jchamier (Fri 19-Oct-12 21:15:30)