Any Suggestions for SHDSL?

[OmegaStone]

I have a small network connected through an OpenNetworks 531R Router, on 2mb/2mb SHDSL line, any suggestions as to how to improve speed a bit.

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) = 52560
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 52560

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: 2102.4 kbps (262.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 840.96 kbps (105.12 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 46 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000010

Precedence (priority) = 010 (immediate)
Delay = 0 (normal delay)
Throughput = 0 (normal throughput)
Reliability = 0 (normal reliability)
Cost = 0 (normal cost)


cheers

[Kip Patterson]

Your setup looks fine. If you do a lot overseas and run into latencies higher than 200 ms, you migh raise your RWIN. As set, it is perfect for your connection for 200 ms.

[OmegaStone]

Thanks :)