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SG TCP/IP Analyzer


IP Address: 54.234.45.10 ()
Client OS: Search Bot
Browser:
User Agent: CCBot/2.0 (http://commoncrawl.org/faq/)
Please Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 0204055001010402
MTU = 1400
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1360
MSS is not optimized for broadband. Consider increasing your MTU value.
Default TCP Receive Window (RWIN) = 17680
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 17680

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
65280  (up to 2 Mbit lines, depending on latency. MSS * 48)
130560 (1-5 Mbit lines, depending on latency. MSS * 48 * 2)
261120 (2-14 Mbit lines, depending on latency. MSS * 48 * 2^2)
522240 (8-30 Mbit lines, depending on latency. MSS * 48 * 2^3)
1044480 (25-60 Mbit lines depending on latency. MSS * 48 * 2^4)

bandwidth * delay product (Note this is not a speed test):

Your current TCP Window limits you to: 707 kbps (88 KBytes/s) @ 200ms latency
Your current TCP Window limits you to: 283 kbps (35 KBytes/s) @ 500ms latency
Consider increasing your RWIN value to optimize TCP/IP for broadband.
MTU Discovery (RFC1191) = ON
Time to live left = 112 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

Share Your Results

Below is a compact version of the results without specific recommendations, useful for sharing your current settings. Feel free to post in our forums with any questions you may have.


Note: Click in text area to highlight. Use CTRL+C to copy results, CTRL+V to paste them.

 

Optimize Your Connection

The TCP/IP Analyzer results provide packet header information from the TCP 3-way handshake between your computer and our server. The information above can be used to fine-tune TCP/IP settings and optimize your internet connection.
Detailed information on optimizing your network-related settings is available in our Broadband articles and TCP/IP Tweaks Articles.
We have also developed the free TCP Optimizer program to help apply the optimal settings automatically: SG TCP/IP Optimizer

Feel free to ask specific questions about your results in our forums.



79,540,223 connections tested since 2001.03.10
Analyzer version: 1.31 - last updated 2017.09.29


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