tag:blogger.com,1999:blog-55245597805403020922012-02-16T21:04:04.189+05:30<br><i>Technology Notes From The Field, Tips and Journal About My Career in IT.</i>vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.comBlogger281100tag:blogger.com,1999:blog-5524559780540302092.post-25721741771059658192011-10-02T12:23:00.001+05:302011-10-02T12:30:43.479+05:30

While I was typing the Part I post on this topic, I came across few other awesome pages describing the situation and their comments on why DNS Based failover doesn’t work as expected. Please take some time and read these: http://serverfault.com/questions/60553/why-is-dns-failover-not-recommended http://www.tenereillo.com/GSLBPageOfShame.htm http://rscott.org/dns/ What was that DNS Based

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-37328919413362921222011-10-02T09:08:00.001+05:302011-10-02T12:52:33.785+05:30

So, you have a critical web service say a critical website that is mirrored across your two Datacenters. Lets call them DC1 and DC2 which are located in different City/State/Country. You need an auto-failover method in case DC1 goes down, DC2 shall take over the responsibility with minimal downtime. Fortunately there are several solutions to this scenario. Based on my experience and knowledge,

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-62422254694277054142011-10-02T02:13:00.001+05:302011-10-02T12:30:51.519+05:30

I have been struggling with proper content presentation and posting using the default Web UI at BlogSpot since quite some time. That’s one of the reason holding me back from posting content and field notes on regular intervals. The major headache is the HTML based UI which is a b*tch to tame. It adds unnecessary tags and junk to the post one makes. Extra BR tags, weird alignments amongst other

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-54835517891931895042011-08-08T14:10:00.000+05:302011-08-08T14:10:08.945+05:30

Lately, I have been struggling to understand the logic behind route-map and its functioning when used along with a prefix-list in order to filter prefixes. I will expand on this post later. For mental note: Only allow 172.1.1.0/24 to pass through. Filter everything else and prepend ASN 3 times. R1#sh ip int brief | ex un   Interface                  IP-Address      OK? Method Status

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-27355572169811154942010-04-21T08:46:00.000+05:302010-04-21T08:46:59.859+05:30

Ttcp can be used to test PTP links, however, the drawback of generating the traffic from router is high CPU usage.Therefore, it is not recommended to use this utility to determine throughput for higher values. TTCP is an hidden undocumented and unsupported IOS command. For testing of higher throughput links, such as, 100BaseT it is recommended to send and receive traffic through routers.For

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-76126745396681504652009-04-21T23:02:00.006+05:302009-04-21T23:09:36.744+05:30

There are several ways to make bash display colorful prompt as well as the file list. Here, are my setting from the /home directory. There is a lot of material available on the web. Just Google it. I have taken snippets and examples from the web and here is my ~/.bashrc and ~./bash_profile # vi ~./bashrcif [ "$TERM" != 'dumb' ] && [ -n "$BASH" ] && [ -n "$PS1" ] then         if [ `/usr/bin/

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-27032778189468385642009-04-19T10:22:00.003+05:302009-04-19T10:55:00.909+05:30

Here is the deal,I have got a Western Digital MyBook 1TB NAS. It runs a trimmed version of Linux, called BusyBox. For the past 2 weeks I have been busy hacking and customizing it.Linux MyBookWorld 2.6.17.14 #1 PREEMPT Fri Jan 18 10:40:25 GMT 2008 armv5tejl GNU/LinuxRecently, after upgrading to latest firmware 2.00.18, I discovered that gcc was missing. I started following this guide to restore

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com2tag:blogger.com,1999:blog-5524559780540302092.post-53574035546433546962009-02-17T23:10:00.000+05:302009-02-17T23:10:52.638+05:30

Nipper, the network device configuration parser. A tool which will parse your configurations and check for any vulnerabilities, or slip-ups that you may have commited. Read more

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-87365975116254463082008-12-01T03:07:00.003+05:302008-12-01T03:18:36.770+05:30

RO#sh int descInterface                      Status         Protocol DescriptionGi0/1                          up             up       *** Connected to Local LAN-Switch ***Fa0/2                          up             up       *** Connected to Primary Router ***Gi0/2                          admin down     down     *** Connected to Primary Router ***Gi0/3                          admin down    

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-56719882171350163732008-11-30T13:16:00.004+05:302008-11-30T13:23:13.738+05:30

Stopping the router from trying to telnet.This is often an annoying problem. Mistype a command and the router thinks you just typed a hostname. For example: MyRouter#shwo Translating "shwo"...domain server (10.1.1.2) % Unknown command or computer name, or unable to find computer address MyRouter#Here, we just mistyped the word show. We didn't want to telnet to a device named "shwo." The

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-80208277820979255732008-11-30T07:58:00.000+05:302008-11-30T08:02:31.737+05:30

Online videos by the IIT professors are available for free on Youtube! The courses include all disciplines of Engineering. This channel provides technical lectures from all seven Indian Institutes of Technology and Indian Institute of Science, Bangalore. The Video Courses are organised as PLAYLISTS under the following Categories: 1. Core Sciences 2. Civil Engineering 3. Computer Science and

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-46595971710997843572008-11-28T09:25:00.003+05:302008-11-28T09:34:08.780+05:30

Ethernet / crossover / modem / null modem / Cisco console.Wouldn't it be nice if you had all these type of connectors in a single cable? Read more on how to accomplish this.In addition see this instructable for more elaborate pictorial description.

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-28234071827249272008-11-26T20:53:00.005+05:302008-11-26T21:12:24.980+05:30

Synergy, an open source software application that allows you to control multiple PC's through TCP/IP (your network).You can control two systems over your network with just one set of K&M connected to one of the machines. I have a laptop and a desktop which are kept apart, this works great. I don't have to reach out for the puny keyboard and track pad of the laptop every time I need to click on

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-81792570852029271832008-11-26T19:53:00.003+05:302008-11-26T20:47:29.698+05:30

Tools and applications that every network and facility management engineer (FMS) should be aware of. These are some of the utilities and tools that an administrator has to use in a networked environment.SolarWinds Network management toolSolarWinds makes award-winning network management software that is trusted by more than one million engineers to manage IT environments ranging from tens to

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-88448295179835742562008-11-25T03:49:00.004+05:302008-11-25T04:32:01.326+05:30

The journey of a thousand miles must begin with a single step.These words stand true in my case. I have joined one of the leading Indian company as a Networking Engineer handling the WAN inter networking. It is a 'small big step' in my nascent career.My short term goals are to understand fully the protocols, day to day business of the workplace and learn as much and as fast as i can about the

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-76649109509417209322008-11-24T11:04:00.003+05:302008-11-24T11:12:27.827+05:30

Some Powerpoint slides I made in college for various assignments.DIGITAL DIVIDEDigital divide which separates the have's and have not's of the IT enabled world.PROXY & REMOTE ACCESSHow to overcome internet censorship. Slide on how to remotely access a workstation and also speaks on various proxies.WEB DESIGNING PRINCIPLESBriefing on web technologies, designing approach, step-by-step approach to

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-19291068155513199862008-11-24T10:57:00.003+05:302008-11-24T11:04:27.275+05:30

This is ZIP of all the program files that we had to do in college in Computer Science.CPP ZIP

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-14458549403752862722008-11-21T08:31:00.003+05:302008-11-21T08:40:57.985+05:30

Here is a round up done by Networkworld regarding the top 10 most promising IT companies to follow.Behavioral Recognition SystemsCoreTrace EnvysionGuardian Analytics MetaforicNexTier Networks NovaShieldPacket Analytics PurewireRohati Systems

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-47334398017922149492008-11-20T19:02:00.005+05:302008-11-24T11:16:40.286+05:30

To customize your inbox, go to the Themes tab under Settings. Themes are rolling out to everyone over the next couple of days, so if you don't see them yet, check back soon.SOURCE

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-64434727583350141282008-11-18T15:53:00.003+05:302008-11-18T16:51:47.604+05:30

This is a piece of advice I gave to a lost soul who was researching the prospects of doing MCA (Master of Computer Applications) Degree. Following are some facts about the MCA degree: MCA is a 3 year degree. Courses are run by various Universities and colleges across India. MCA is equivalent to a B.Tech(4 years degree) or a BS(in US) Common path is: BCA --> MCA B.Sc (IT/CS) --> MCA Here is my

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-56391432558676600292008-11-18T05:04:00.002+05:302008-11-18T05:05:59.041+05:30

http://www.juniper.net/training/fasttrack/Juniper is offering free online courseware, "JUNOS as second language". This is especially helpful for people who already have Cisco certificate and want to learn Juniper technology as well. The study material is free for use.There is an online assessment test that you could take to get avail 50% discount on various certification, JNCIA, JNCIS, etc.Do not

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-24672547234148988642008-11-18T04:40:00.004+05:302008-11-18T04:47:17.523+05:30

Read this: http://www.microsoft.com/learning/mcp/offers/secondshot/default.mspxFollow these three easy steps:1. Register for the Second Shot offer, and take the Microsoft Certification exam by December 31, 2008. 2. If you do not pass the exam, you get a free offer of a retake exam until June 30, 2009. 3. If you do pass your first exam, you get a 25 percent discount on a different exam. You have

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-9618239588997039552008-11-18T04:13:00.000+05:302008-11-18T04:14:09.738+05:30

There are two nifty freewares at the moment to facilitate this...1] HTB-GEN http://freshmeat.net/projects/htb-gen/htb-gen is an easy, scalable bandwidth management tool. You can set up/down portions of bandwidth for each host or network that goes through your router/firewall. Priority traffic (Web, email, gaming, FTP, VOIP, and streaming) is preferred over junk traffic (Kazaa, emule, etc).

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-13409720427360503792008-11-18T04:11:00.001+05:302008-11-18T04:12:55.890+05:30

See these link thoroughly:http://info.scrapur.com/orkut/gmail-orkut-or-google-account-is-hacked/http://info.scrapur.com/orkut/and-i-forgot-my-orkut-password-how-to-get-back-my-orkut-profile/If that doesn't help...Threaten the person that you are going to Cyber Crime Cell, because it was a female's a/c and he can be screwed in this case. Scrap him, mail him... write a serious and threatening

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-63911713234164101202008-11-18T04:10:00.000+05:302008-11-18T04:11:21.392+05:30

After days of searching... I have found nice tools to split my monitor's display into two to increase productivity.I am using WinSplitAlso, Microsoft Research Center at Bangalore, India is developing an application to help schools to economically harness the processing power of a single PC.Source: http://www.computerhope.com/issues/ch000894.htm

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-64553713673720939722008-11-18T02:31:00.000+05:302008-11-18T02:33:53.013+05:30

My love for technology doesn't date back to 1960s or something :D, it was early 2000 that I got my first PC. Being a very inquisitive and experimental minded kid throughout my childhood, I took no time to fiddle with the beige box, even though I knew squat about it at the time.So, no I did not have AMIGA, Apple II or the like. Though, my first encounter was with Windows 3.1, back at junior school

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-67227056278308642152008-11-18T02:11:00.000+05:302008-11-18T05:06:16.672+05:30

Welcome to the most impatiently written blog on the interweb. The main goal of this site is to accumulate all the notes and knowledge which I learn and experience from my day to day endeavors with technology.

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com0tag:blogger.com,1999:blog-5524559780540302092.post-88982593208116973952008-11-17T10:16:00.003+05:302008-11-24T11:41:28.126+05:30

Please wait while the contact widget loads...You can also mail me atThanks!

vaibhavhttp://www.blogger.com/profile/14362951354141335256noreply@blogger.com