TSGL: Network Adress Translation

[Don James]

Hi
I have the same D-Link modem connected to Optus.
I have no idea what the problem could be but my modem shows  802.1p 
support as 0ff on a  Marvell Yukon  Ethernet connection .
Whether this is of any use I don't know but it is over Telstra Phone lines.
Don James
In cold Melbourne.

Don Penlington wrote:
> System:
>
> XP Pro SP2.
>
> D-Link modem connected by 3Com Ethernet  XL PCI TX NIC (don't even ask me 
> what all that jargon means!). ADSL1500.  Unlimited downloads.
>
> I don't have a router, and I don't have a local network. This is a 
> standalone computer.
>
> Problem:
>
> I have lately experienced several instances of what appears to be lost 
> connections on long downloads or occasionally when trying to connect to web 
> pages. I'm not aware of any recent additions which might have caused this.
>
> It also happens after about 30-60 minutes of intensive browsing. Suddenly 
> the browser (Maxthon/IE6) Sometimes I have to walk away for 1/2 hour, then 
> everything's fine again.
>
> Azureus Bittorrent tells me that I most likely have a "NAT" ("Network 
> Address Translation") problem. Most (all?) their suggested fixes seem to 
> relate to routers or LAN's, of which I have neither.
>
> Bittorrent and other download speeds are about normal---except for these 
> apparent interruptions to the connection.  Modem lights remain flashing as 
> if it is still downloading (probably trying to seek reconnection).
>
> Device Manager shows that in the Ethernet card/Device Properties/Advanced:
>
>     1. 802.1p support is enabled.
>     2. Flow control is disabled.
>     3. Network Address is marked "not present".
>
> Should I change any of these settings? Presumably item 3 only applies where 
> there is a local network of computers.
>
> Last week I was unable to access a paysite file, I kept getting "file in 
> use" error messages. After extensive investigation and various suggestions 
> re browser security settings (enabling ActiveX etc), they could not solve 
> the problem and decided that it must be some setting unique to this computer.
>
> I've a feeling these might be 2 aspects of the same problem.
>
> I've run antispyware scans with Spybot, AdAware, A-Squared, and a-v scan 
> with AVG. Apart from the few usual
> non-critical fleas, the system comes up clean.
>
> I've also done a "repair" on the connection icon (flushing DNS cache etc), 
> and several times reset the modem by powering off for 60 seconds. No 
> difference.
>
> Does anyone have any suggestions what might be causing these dropouts?  Of 
> course, I can't entirely rule out overloads at the ISP, but I've been with 
> the same major ISP for several years, and have always found them completely 
> reliable.
>
> Don Penlington
>
>
>  From the Beach at Surfers Paradise in sunny Queensland.
> Computer tutorials, local scenery,  and other things at my website:
> http://users.tpg.com.au/deepend/index1.html
>
>
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