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While I was optimizing my website, I realized links to our website was splitted with two URLs, www.ipBalance.com and ipBalance.com. It's definitely not good for popularity indexed by Google and even other searching engineers. Then I have decided picking one permanant name and applied 301 redirect URL. I went simple route to set that up using cpanel function, but it doesn't work for me. Other way was using an .htaccess file at hosting server. Due to bad experience with .htaccess file previously, so I didn't want to touch it. But it was fairly straight forward to complete 301 redirect URL. 

Open an .htaccess file and edit with below context.
** This will work ONLY on Linux servers having the Apache Mod-Rewrite module enabled.

 

 

Last Updated (Thursday, 15 September 2011 13:55)

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VPCS(Virtual PC Simulator) is a PC simulating software which is small and easy to use. For the Dynamips user, this simulator is fairly handy.

While I was installing and configuring VPCS, I got error says "206-unable to create UDP NIO"

error message 206-unable to create UDP NIO

 

Last Updated (Thursday, 15 September 2011 13:45)

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Cisco Express Forwarding (CEF) is well-known Cisco advanced Layer 3 IP switching technology. This technology brings traffic load-sharing technique that is functionality in a router that distributes packets across multiple links based on layer 3 routing information. It has two modes; per-destination and per-packet. As you know, per-destination is default setting Cisco gear by Cisco. Some of circumstance, load-sharing by per-packet mode would be desirable, but most of case per-destination mode would be the best choice. One of famous reason would be out of sequence order on the hi-speed link. This happening will dramatically reduce end-to-end performance.

 

Traffic ratio wise, the per-packet mode will utilize all involved circuits in exact equal amount of traffic while the per-destination mode utilizes circuits in vary.

 

To verify traffic load-sharing per packet, try below command

 

Cisco_router#Show ip cef exact-route x.x.x.x y.y.y.y

 

 

Last Updated (Sunday, 20 May 2012 12:18)

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Have you ever thought about your website value? There are sites out there interent. One I found today iscalled $stimator.com. Not sure it is really acurate or not. But it makes me happy with output of calculating one of my web blogs. 

 Stimator start page picture

Here is output of www.ipBalance.com's value below

 

 Stimate website output for www.ipBalance.com

 

Doesn't matter how much the result is realistic or accurate, it is just interesting to see the value.

Have fun!

 

Last Updated (Sunday, 20 November 2011 00:29)

 

I am currently seeing constant packet losses on my traceroute. However, you would get an answer Packet lost | ICMP picfrom your ISP tech support; "We don't see any issue on our backbone network at this time". It's a strange enough. Definitely, my output of traceroute shown packet losses and even my expensive monitoring system noticed it as well. They might have a real issue on their backbone, but most of time it is something else (???).
Here is a sample output of traceroute from Internet. Below yellow marker indicated packets dropping on Sprintlink.net. (ATTN:This is just for educational example, below output doesn't means Spintlink had an issue.)

PC node> traceroute 163.191.183.110

1 ee-0-5.1.net.net (x.x.x.x - hided IP) 0.612 ms 0.456 ms 0.351 ms
2 500.POS3-1.GW5.CHI2.ALTER.NET (x.x.x.x - hided IP) 1.340 ms 1.328 ms 1.275 ms
3 0.so-2-0-1.XT2.CHI2.ALTER.NET (152.63.66.118) 1.231 ms 1.375 ms 1.189 ms
4 0.so-5-0-0.XL2.CHI13.ALTER.NET (152.63.64.14) 2.457 ms 2.418 ms 2.387 ms
5 0.so-7-0-0.BR2.CHI13.ALTER.NET (152.63.73.29) 2.413 ms 2.449 ms 2.438 ms
6 sl-st21-chi-3-0-0.sprintlink.net (144.232.18.141) 2.291 ms 2.211 ms 2.433 ms
7 * * *
8 * * *
9 sl-stateil-189071-0.sprintlink.net (144.223.35.46) 3.629 ms 3.804 ms 3.453 ms 10 ge-11-0-voyager2-sob2.chicago.lincon.net (206.166.9.233) 3.439 ms 3.491 ms 3.354 ms
11 pos-6-0-sob2-sob1.chicago.lincon.net (206.166.9.121) 8.100 ms 8.086 ms 9.308 ms
12 * * *
13 POS-4-0-satriani-peo-p1-petrucci-peo-p2.lincon.net (206.166.9.134) 75.234 ms 21.367 ms 8.376 ms
14

 

Last Updated (Saturday, 18 February 2012 01:01)

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STG is stand for SNMP Traffic Grapher. This is a well-known free real-time monitoring SNMP tool for quick real-time bandwidth monitoring. It was coded by Leonid Mikhailov. Yes... Yes... it's old, but it works out pretty well. If you feel slow Internet access, you might want to check your WAN link bandwidth in real-time which might be maxed out in any reason. Most of router stat provides minimum 30 second interval which doesn't provide details of bustable traffic patterns occurred in 5~6 seconds. To simply check your real-time bandwidth this is one of way. Again, it's free.

Download the file from http://www.ipBalance.com/downloads/stg.zip
or click icon

** If you cannot down load the file, probably your IE browser is blocking it. Use firefox or Copy & paste http://www.ipBalance.com/downloads/stg.zip on your browser.

See below what you need to do

 

Last Updated (Saturday, 07 March 2015 18:56)

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