SDN Re­mains Un­beat­able!

The cloud is grow­ing big­ger and big­ger and tra­di­tional net­work­ing can­not keep pace with it. SDN pro­vides much more power to en­ter­prises al­low­ing them to do many things.

Voice&Data - - COLUMN -

DGM IP Divi­sion, Al­ca­tel-Lu­cent In­dia

In 2016, it is ex­pected that the adop­tion of soft­ware­de­fined net­work­ing (SDN) will in­crease as ser­vice providers and en­ter­prises show more in­ter­est in this tech­nol­ogy so­lu­tions. As ser­vice providers are an­a­lyz­ing the real busi­ness val­ues of soft­ware de­fined net­work­ing and ser­vice providers are look­ing for flex­i­bil­ity, au­to­ma­tion, vis­i­bil­ity, rev­enue gen­er­a­tion.

Over the years, SDN has been mov­ing very fast and has be­come crit­i­cal be­cause en­ter­prises are look­ing to get more value from their in­vest­ments, net­work­ing and data cen­ters. It is crit­i­cal be­cause data cen­ters are grow­ing at an alarm­ing rate and en­ter­prises need to move with the times.

En­ter­prises and ser­vice providers will adopt SDN as they see it as a way to make their pri­vate cloud work bet­ter for them. SDN has be­come an in­evitable plan from a prac­ti­cal and pro­fes­sional per­spec­tive.

The cloud is grow­ing big­ger and big­ger and tra­di­tional net­work­ing can­not sat­isfy the re­quire­ments. SDN is the fu­ture trend be­cause it pro­vides much more power and al­lows en­ter­prises to do many things, which can’t be done to­day.

SDN is the paradigm that can scale up / scale out and al­low en­ter­prises to keep up with data cen­tres. The tra­di­tional net­work is not ad­e­quate be­cause it is the hard­ware-de­fined net­work; how­ever, soft­ware can change the whole net­work.

SDN goes open source

Soft­ware-de­fined net­work­ing plat­forms are in­creas­ingly open source. Be­ing open in­volves giv­ing cus­tomers a choice so they’re not re­stricted to a pro­pri­etary so­lu­tion.

SDN, where net­work­ing is con­trolled through soft- ware or vir­tu­al­iza­tion, com­prises three vec­tors: pro­gramma­bil­ity, the OpenFlow pro­to­col and vir­tu­al­iza­tion.

SDN is also multi-ten­ant, while us­ing the anal­ogy of a mul­ti­tenant apart­ment build­ing. You want to use the same IT in­fra­struc­ture for mul­ti­ple ten­ants.

The goal of SDN is to al­low net­work en­gi­neers and ad­min­is­tra­tors to re­spond quickly to chang­ing busi­ness re­quire­ments. SDN pro­vides the ca­pa­bil­i­ties to shape traf­fic from a cen­tral­ized con­sole, by­pass­ing the need to con­fig­ure in­di­vid­ual switches. This al­lows ser­vices to be de­liv­ered where they are needed, when they are needed – with less room for hu­man er­ror.

By def­i­ni­tion, SDN seems like a no-brainer. It makes per­fect sense for or­ga­ni­za­tions to strive to quickly adapt to chang­ing busi­ness re­quire­ments, so why not im­ple­ment SDN to­mor­row?


Com­mu­ni­ca­tions ser­vice providers have long wished to drive down the op­er­a­tional cost (Opex) of their net­works and in­crease the agility and speed with which they de­liver new ser­vices. Their con­cern to achieve a pro­gram­mable net­work that can be re­con­fig­ured quickly, eas­ily and cost-ef­fec­tively to meet new cus­tomer and ser­vice de­mand is driv­ing huge in­ter­est in tech­nolo­gies such as SDN and NFV th­ese tech­nolo­gies prom­ise to rev­o­lu­tion­ize net­work op­er­a­tions through au­to­ma­tion and ap­pli­ca­tion pro­gram­ming in­ter­face (APIs).

The NETCONF– Net­work Con­fig­u­ra­tions Pro­to­col is an in­ter­net En­gi­neer­ing Task Force (IETF) stan­dard pro­to­col for read­ing and writ­ing net­work con­fig­u­ra­tions and to­gether with its as­so­ci­ated data-mod­el­ing

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