Frodo
join:2006-05-05
Lees Summit, MO
| reply to man00
Re: when did AT&T start playing around with torrent transfers
said by man00  :I found if I make a internet connection within windows and not setup the modem with user name/pass..ect seems to help a lot That would suggest that the NAT engine is overloaded with too many connections. That theory would be reinforced if there are many peers on the torrent. If your modem permits it, maybe placing the public IP address on the PC will take the NAT out of the picture. |
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man00
join:2003-07-25
74986 | placing the public IP address on the PC will take the NAT out of the picture.
huh? |
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Frodo
join:2006-05-05
Lees Summit, MO
| If your PC is drawing a private IP address, such as the 192.168.1.64 that my 4100 hands out, then the connections coming in the modem needs to be converted from the external "public" ip address to the "private" ip address. A modem can only handle a finite amount of these connections. I have a $5 router that can't handle more than 50 connections. Anyway, my 4100 has the option of placing the public IP address on the computer. If that option is available on the 5100, then *maybe* the nat engine need not be used, since no IP address conversion is needed. Generally, the conversion is handled through a NAPT engine, that combines address translation and port translation. |
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Frodo
join:2006-05-05
Lees Summit, MO
1 edit | reply to man00
Public IP address | | 
Private IP address | |
said by man00 :placing the public IP address on the PC will take the NAT out of the picture. huh? If your modem provides your PC with a private IP address, such as one that begins with 192.168, then a NAT table is used to keep track of your connections. That table is of finite size, and, generally, is smaller, the older your modem is. If your PC draws a public IP address, then there is no NAT concerns. My VOIP software indicates the two types of connections. If I overload the NAT table, my modem is going to give me all kinds of trouble, something that won't happen with a public IP address on the PC. A google of "5100b" "nat table" indicates that this issue has come up before.
When you said "I found if I make a internet connection within windows and not setup the modem with user name/pass..ect seems to help a lot", that's what made me suspect nat, because if you have PPPoE on the computer, you'll draw a public IP address on the computer. |
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man00
join:2003-07-25
74986 | So what are you saying I should do/change in the modem. router pc? |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
 ·Pacific Bell - SBC
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Symmetric NAT connection. |
I am currently running uTorrent through a "symmetric NAT" connection, and have "Global maximum number of connections" at 200, and "Maximum number of peers connected per torrent" at 60. I normally only run one torrent at a time, so I could probably bump that second number higher; but this is where I leave it while I am running PPP on the modem.
I've had a Netgear number fold with half those maximums. I am currently using a D-Link DIR-655.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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Frodo
join:2006-05-05
Lees Summit, MO
| reply to man00
said by man00 :So what are you saying I should do/change in the modem. router pc? Well, if you have a router, the modem could be bridged, and the router could handle the PPPoE, and then everything would depend on the size of the router's NAT table. Without the specifications for the router, can't say. The only thing I can say is that if AT&T was blocking your P2P, then it would work no better when Windows handled the logon, versus when the modem handled the logon. |
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