My provider is Comcast / Xfinity. My advertised speed is up to 30Mbps down, and up to 6Mbps up.
These results are from a wired connection. Wireless connection at best is 24Mbps down, and around 4Mbps up.
Running a new Motorola SB6120, and Linksys E2500.
Laptops vary in the household, but the current guinea pig is this one--
Dell Inspiron I6400
Intel core 2 CPU T7200 @ 2GHz
2 Gb RAM
XP SP3 MCE
Broadcom 440x 10/100 Integrated Controller
Dell Wireless 1500 Draft 802.11n WLAN Mini-Card
Here is my analysis result-
« SpeedGuide.net TCP Analyzer Results »
Tested on: 2012.06.11 02:49
IP address: 69.137.xx.xx
Client OS/browser: Windows XP (Firefox 13.0)
TCP options string: 020405b40103030501010402
MSS: 1460
MTU: 1500
TCP Window: 2055680 (multiple of MSS)
RWIN Scaling: 5 bits (2^5=32)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 82227kbps (10278KBytes/s)
BDP limit (500ms): 32891kbps (4111KBytes/s)
MTU Discovery: ON
TTL: 56
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
TCP/IP Optimizer MTU & Latency result-
Pinging [68.67.73.20] with 1500 bytes -> ..fragmented
Pinging [68.67.73.20] with 750 bytes ->bytes=750 time=26ms TTL=56
Pinging [68.67.73.20] with 1125 bytes ->bytes=1125 time=27ms TTL=56
Pinging [68.67.73.20] with 1312 bytes ->bytes=1312 time=29ms TTL=56
Pinging [68.67.73.20] with 1406 bytes ->bytes=1406 time=28ms TTL=56
Pinging [68.67.73.20] with 1453 bytes ->bytes=1453 time=28ms TTL=56
Pinging [68.67.73.20] with 1476 bytes -> ..fragmented
Pinging [68.67.73.20] with 1464 bytes ->bytes=1464 time=28ms TTL=56
Pinging [68.67.73.20] with 1470 bytes ->bytes=1470 time=27ms TTL=56
Pinging [68.67.73.20] with 1473 bytes -> ..fragmented
Pinging [68.67.73.20] with 1471 bytes ->bytes=1471 time=27ms TTL=56
Pinging [68.67.73.20] with 1472 bytes ->bytes=1472 time=27ms TTL=56
The largest possible non-fragmented packet is 1472 (1500 - 28 ICMP & IP headers).
You can set your MTU to 1500
Pinging [68.67.73.20] with 32 bytes ->bytes=32 time=25ms TTL=56
Pinging [68.67.73.20] with 32 bytes ->bytes=32 time=26ms TTL=56
Pinging [68.67.73.20] with 32 bytes ->bytes=32 time=26ms TTL=56
Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=142ms TTL=243
Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=145ms TTL=243
Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=144ms TTL=243
Pinging [169.232.55.224] with 32 bytes ->bytes=32 time=100ms TTL=47
Pinging [169.232.55.224] with 32 bytes ->bytes=32 time=97ms TTL=47
Pinging [169.232.55.224] with 32 bytes ->bytes=32 time=95ms TTL=47
Pinging [173.194.37.84] with 32 bytes ->bytes=32 time=20ms TTL=55
Pinging [173.194.37.84] with 32 bytes ->bytes=32 time=19ms TTL=55
Pinging [173.194.37.84] with 32 bytes ->bytes=32 time=19ms TTL=55
Pinging [64.62.162.20] with 32 bytes ->bytes=32 time=87ms TTL=115
Pinging [64.62.162.20] with 32 bytes ->bytes=32 time=103ms TTL=115
Pinging [64.62.162.20] with 32 bytes ->bytes=32 time=87ms TTL=115
Ping statistics for above hosts:
Packets: Sent = 15, Received = 15, Lost = 0 (0% loss)
Approximate round trip times (RTT) in milli-seconds:
Minimum = 19ms, Maximum = 145ms, Average = 75ms
I'm running a LAN Request buffer size of 16384, including all recommended settings for a line speed of 40Mbps using SG TCP Optimizer.
Recent speedtests


http://stage.results.speedtest.comcast. ... 206662.png
I've tried to include everything relevant-- if I've omitted something-- please kindly let me know, I'm learning. I am open to suggestions.
Thank you in advance for your knowledge, and input.