srau - Slashdot User

The Zen of SOA 219

Posted by samzenpus on Friday January 16, 2009 @04:30PM from the read-all-about-it dept.

Alex Roussekov writes "The book "Zen of SOA" by Tom Termini introduces an original view to the challenging world of SOA. He refers to the Zen philosophy as a "therapeutic device" helping SOA practitioners to get rid of prejudices and opinions in order to apply a clear mind-set based on real-life experiences and the application of technology knowledge. Each chapter of the book is prefaced by Zen Truism that the author suggests to "revisit, reflect on it longer, and see if you are able to establish a truth from the narrative, as well as from your own experiences." In fact, the book is about a SOA Blueprint outlining a methodology for building a successful SOA strategy. The target audience is C-level Executives, IT Managers and Enterprise Architects undertaking or intending to undertake adoption of SOA throughout their organizations. I strongly recommend the book to all SOA practitioners involved in implementation of SOA." Read below for the rest of Alexander's review.

Comment Re:I've heard... (Score 1) 142

by srau on Monday December 13, 2004 @07:04PM (#11076839) Attached to: Router Wars

If you're going to use an ISO standard interior gateway routing protocol, such as ISIS, would it not make sense to use the companion exterior gateway protocol ESES and/or the companion hybrid ESIS? BGP is a cool protocol, but it doesn't always play nice. Using something designed specifically to work with ISIS would seem to be more logical.

Since IPv4 is not an ISO standard protocol, why would one worry about using an exterior gateway protocol that is ISO standard, particularly when you have no one else to talk to using said ISO standard protocol?

There's no EGP support. Not catastrophic, as not many people use it as a percentage of the population, but some do. If they do, they cannot work with Cisco products, because Cisco doesn't support it. The same applies to GGP.

I suppose EGP and GGP support would be useful if you invented a time machine and wanted to connect a router of today to the Internet of 1980...

For multicasting, I can't see any support for IGMPv3,

Router(config-if)# ip igmp version 3

Enables IGMPv3 on this interface. The default version of IGMP is set to Version 2.

QoS bugs me a lot. They have weighted fair queueing (forwards and backwards), RED, ECN and CBWFQ (though they seem to still be working on that last one). I've found no reference to CBQ, HFQ, HFSC, BLUE, RSVP or JoBS. Although CBQ is a wretch to configure, if it's done right, it blows the socks off WFQ. If you're doing intranet or extranet videoconferencing, you almost have to use RSVP to maintain the quality.

Then you certainly haven't looked very hard. I'm not a qos expert, since I'm in the service provider sector and not enterprise, but just a couple seconds at cisco.com turned up support for cbq and rsvp.

--Stafford

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