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Category Archives for "Networking"

Its not a goodbye. Leaving Oracle but not Solaris!!

This is probably one of the most difficult entries I have ever written. I have decided to leave my job at Oracle. Don’t have a forward destination yet but I intend to take some time thinking about it before I take the next step. I am leaving Oracle but I will still be involved with Solaris and OpenSolaris in some form or the other. Having spent 14 years writing million+ lines of code and architecting some of the most complex subsystems, I don’t intend to just walk away.

The last 2-3 days have been a very emotional journey for me. I thought I was a very strong willed person but it was amazing how many times I came close to tears when so many people stopped by. All I can say is that I am so grateful that the community feels that I had done something useful (both personally and professionally) for Solaris. The journey has been nothing but wonderful and I will surely miss everyone. But I have learned one thing in last several years – to not say goodbye ever because our paths will cross again!!

Best of luck to everyone in the Solaris community who help it Continue reading

Troubleshooting challenge lab solutions

We hope that you not only enjoyed the lab, but also learned TS techniques and advance R&S topics. ...Remember that practicing TS, not only good for the TS section, but it also a great tool for sharpening your advance R&S config skills. ...Please stay tuned to this blog for more TS mini labs and other TS/R&S related topic.

The TS challenge has ended

I hope that you have enjoyed the lab, and most important also learned in the process about TS and advance R&S topics. If you want to dive deeper into CCIE R&S troubleshooting and advanaced CCIE R&S topics, you are welcomed to have a look at the TS workbook. In the following days I’ll publish the list of winners and the solutions.

TS Challenge is on

The following routes are sent from BB4 to R1: 24.24.24.24 /32, 24.24.24.1 /32, 24.24.24.2 /32 and 24.24.24.3 /32 R1 is configured with the following policy for routes coming from BB4: • R1 should be configured such that R5 does NOT advertise network 24.24.24.2 /32 to R6 • R1 should filter network 24.24.24.1 /32 However, R5 does NOT see network 24.24.24.24 /32 and network 24.24.24.3 /32 that should have come from BB4.

Ticket #10

Please follow the instructions found here about how to use the lab file. ...R6 was configured to summarize R3's Lo30,Lo31,Lo32 and Lo33, so R4 would see only one summarized route for them. ...Fix the problem while, making sure R6 sees all R3's routes.

Infiniband and it’s unique potential for Storage and Business Continuity

It’s one of those technologies that many have only had cursory awareness of. It is certainly not a ‘mainstream’ technology in comparison to IP, Ethernet or even Fibre Channel. Those who have awareness of it know Infiniband as a high performance compute clustering technology that is typically used for very short interconnects within the Data Center. While this is true, it’s uses and capacity have been expanded into many areas that were once thought to be out of its realm. In addition, many of the distance limitations that have prevented it’s expanded use are being extended. In some instances to rather amazing distances that rival the more Internet oriented networking technologies. This article will look closely at this networking technology from both historical and evolutionary perspectives. We will also look at some of the unique solutions that are offered by its use.

Not your mother’s Infiniband

The InfiniBand (IB) specification defines the methods & architecture of the interconnect that establishes the interconnection of the I/O subsystems of next generation of servers, otherwise known as compute clustering. The architecture is based on a serial, switched fabric that currently defines link bandwidths between 2.5 and 120 Gbits/sec. It effectively resolves the Continue reading

Breaking firewalls with SSH and puTTY – NOT with a proxy.

I’ve been seeing a lot out on the internet about proxy servers and how to use them to circumvent your school or workplace internet filters. Lifehacker recently posted an ~EIGHT PAGE~ walkthrough on how to set up such a proxy at home. This is entirely too complicated. Not only is it a long walkthrough, but your traffic is still unencrypted. Unless your school, work or other bought their filter technology more than 4 years or so ago, they can still see the header of your packets and where they’re headed.

Breaking firewalls with SSH and puTTY – NOT with a proxy.

I’ve been seeing a lot out on the internet about proxy servers and how to use them to circumvent your school or workplace internet filters. Lifehacker recently posted an ~EIGHT PAGE~ walkthrough on how to set up such a proxy at home. This is entirely too complicated. Not only is it a long walkthrough, but your traffic is still unencrypted. Unless your school, work or other bought their filter technology more than 4 years or so ago, they can still see the header of your packets and where they’re headed.

Breaking firewalls with SSH and puTTY – NOT with a proxy.

I’ve been seeing a lot out on the internet about proxy servers and how to use them to circumvent your school or workplace internet filters. Lifehacker recently posted an ~EIGHT PAGE~ walkthrough on how to set up such a proxy at home. This is entirely too complicated. Not only is it a long walkthrough, but your traffic is still unencrypted. Unless your school, work or other bought their filter technology more than 4 years or so ago, they can still see the header of your packets and where they’re headed.
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