Nikolay Abromov blog

2013 was really interesting year for me and my wife - We visited some really cool places like Seychelles (La Diague) and Caribbean (Barbados).  Two really different places from each other, La Digue is a small island with population of 2000 people according Wikipedia, but in my personal opinion there was not more than 200 people. Trip around the Island by foot took us around 5-6 hours, and it was freaking amazing with stunning views. Probably it's not worthy posting photos here because they can be found on google images anyway ;-) Couple of months after we decided to visit Barbados (Caribbean), which was really different from La Digue, the island was much bigger with much bigger population. One of the most interesting things we did was to go around the island with the public transport, that was quite a fun, of course we hired a car after that, but the public transport is something to remember, especially cars which are operating within the city area, called Z*R.. laud Rege music and...

I have this interesting case where I have only 3 available interfaces which are in a port-channel and I was wondering how the traffic will be load-balanced, there is this interesting article I just found on the Cisco forum which explains it in a great detail. source: https://supportforums.cisco.com/docs/DOC-17855

Source: http://www.stevesouders.com/blog/2012/10/11/cache-is-king/ It’s important to understand where the benefits from each technique come into play. Using Ajax, for example, doesn’t make the initial page load time much faster (and often makes it slower if you’re not careful), but subsequent “pages” (user actions) are snappier. Optimizing JavaScript, on the other hand, makes both the first page view and subsequent pages faster. Better caching sits in the middle: The  very  first visit to a site isn’t faster, but subsequent page views are faster. Also, even after closing their browser the user gets a faster initial page when she returns to your site – so the performance benefit transcends browser sessions. These web performance optimizations aren’t mutually exclusive –  you should do them all!  But I (and perhaps you) wonder which has the biggest impact. So I decided to run a test to measure these different factors. I wanted to see the benefits on real we...

This will be a short post. Today is my last day in the company I was working for last one year and It's a bit sad leaving some great guys behind but at the same time I am really excited about the new opportunity I have.

source:    Petr Lapukhov Abstract This publication briefly covers the use of 3rd party next-hops in OSPF, RIP, EIGRP and BGP routing protocols. Common concepts are introduced and protocol-specific implementations are discussed. Basic understanding of the routing protocol function is required before reading this blog post. Overview Third-party next-hop concept appears only to distance vector protocol, or in the parts of the link-state protocols that exhibit distance-vector behavior. The idea is that a distance-vector update carries explicit next-hop value, which is used by receiving side, as opposed to the “implicit” next-hop calculated as the sending router’s address – the source address in the IP header carrying the routing update. Such “explicit” next-hop is called “third-party” next-hop IP address, allowing for pointing to a different next-hop, other than advertising router. Intitively, this is only possible if the advertising and receiving router are on a shared ...

http://www.mellanox.com/

reminder to read this article: http://www.juniper.net/techpubs/en_US/junos11.4/topics/topic-map/mcast-pim-rpt-spt-cutover.html