Need help tweaking my cable

[Mr White]

Just installed this cable and everything is set to default.Now im not sure but im getting packet loss from dslreports. I know my rwin is too low right now,but i could use some help in finding the right settings,thanx

[Lobo]

See help page in signature below and follow directions, take your time and good luck.:) :) :)

[Mr White]

Lobo im having problems with tcp analizer. My default settings are still there after i used dr.tcp to change rwin and others? how do i get them to take effect?


TCP options string = 020405b4

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 49152
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 49152
For optimum performance, consider changing RWIN to 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: 1966.08 kbps (245.76 KBytes/s) @ 200ms
Your RcvWindow limits you to: 786.432 kbps (98.304 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = OFF

Time to live left = 48 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = OFF

IP type of service field (RFC1349)= 00000000

[Lobo]

On help page below in sig on 2nd page at bottom under Tips, it tells you how to disable proxy server, do that, and post analyzer results:) :)

[Lobo]

Make sure Tcp1323Opts is set to 1:) :) :In Dr. Tcp-Windows scaling-yes

[Mr White]

thanx its disabled...Ok what should i do now lobo :)
Im on a 3meg cap down and 360kilobits upload

TCP options string = 020405b40103030301010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 522224
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 65278
For optimum performance, consider changing RWIN to 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: 20888.96 kbps (2611.12 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8355.584 kbps (1044.448 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 49 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[Lobo]

What are your system specs please sir:) :)

[Mr White]

sorry im running win ME , P2-400 ,128ram
also can you give me an ip and mask for my NIC? :)

[Lobo]

Your present RWIN is alittle high, try 373360, 373760 or 385440:) :) :)

[Mr White]

how does this look? can you help me with the ip and mask?

TCP options string = 020405b40103030301010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 385440
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 48180
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: 15417.6 kbps (1927.2 KBytes/s) @ 200ms
Your RcvWindow limits you to: 6167.04 kbps (770.88 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 17 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[Lobo]

Looks good if it works for you :) :)