Help on tweak! Cable 256/256

[Tio-Fu]

Well, I just formated my PC and forget to save the cable settings :)
Sorry :)

My connection is a 256/256 cable (well I'm not EXACTLY sure that is 256 of upload, maybe is 128, but I normally send up to 25k/s)

My ISP is irrelevant since I live in Brasil.

Browser/OS = Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)
Note: Read the FAQ if the above is not your IP address.

TCP options string = 020405b401010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default Receive Window (RWIN) = 8760
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 8760
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 350.4 kbps (43.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 140.16 kbps (17.52 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.

MTU Discovery (RFC1191) = ON

Time to live left = 117 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000


2002-11-06 18:41:33 EST: 223 / 230
Your download speed : 223794 bps, or 223 kbps.
A 27.3 KB/sec transfer rate.
Your upload speed : 230547 bps, or 230 kbps.

(Please consider the fact that I'm living in Brasil =) )

[mnosteele52]

Actually your speed right now looks pretty good;). First install the vtcp 386 patch (http://www.speedguide.net/files/vtcp386/236926USA8.EXE) then try the following settings in CableNut:

BcastNameQueryCount - 1
BcastQueryTimeout - 100
BSDUrgent - 1
CacheTimeout - 600000
DefaultRecvWindow - 17520
DefaultTTL - 64
EnableDNS - 0
GlobalMaxTcpWindoSize - 17520
KeepAliveInterval - 500
KeepAliveTime - 14400000
Lanabase - 0
LocalCopyMade - 1
MaxConnections - 64
MaxConnectRetries - 5
MaxDataRetries - 64
NameTableSize - 255
NameSrvQueryTimeout - 100
PMTUBlackHoleDetect - 0
PMTUDiscovery - 1
RoutingBufSize - 146432
RoutingPackets - 100
SackOpts - 1
SessionKeepAlive - 7200
SessionTableSize - 255
Size/Small/Medium/Large - 3
Tcp1323Opts - 0
TcpTimedWaitDelay - 30
MaxDupAcks - 2
DefaultTOS - 92
IGMPLevel - 2
MaxConnectionsPer1_0Server - 8
MaxConnectionsPerServer - 4

If your speed drops then change your DefaultReceiveWindow & GlobalMaxTcpWindoSize back to 8760.
:D ;)

[Tio-Fu]

Thanks =)

[Tio-Fu]

Hey mnosteele52,
Could you explain me why NIC card is better than USB? Because I'm using USB and wanna know why exactly NIC is faster.

[mnosteele52]

USB is slower because it relies more on CPU cycles to function where as a NIC doesn't, USB is also more troublesome.:) ;)

[Tio-Fu]

My ping can get better if I change USB for NIC?

[mnosteele52]

Originally posted by Tio-Fu
My ping can get better if I change USB for NIC?

Most likely yes.:D