ديدگاه نوين در بازسازی مطمئن روی شبكه‌های مبتنی بر MPLS
محورهای موضوعی : مهندسی برق و کامپیوترآرش دانا 1 * , احمد خادم زاده 2 , محمد اسماعیل کلانتری 3
1 - دانشگاه آزاد اسلامی و احد علوم و تحقیقات
2 - مرکز تحقیقات مخابرات، تهران، ایران
3 - دانشکده مهندسی برق، دانشگاه خواجه نصیرالدین طوسی، تهران، ایران
کلید واژه: بازسازيشبكه هاي MPLS و كيفيت سرويس,
چکیده مقاله :
تضمين كيفيت سرويسهاي بلادرنگ بر روي شبكه‌هاي مبتني بر پروتكلهاي اينترنت مستلزم تضمين قابليت پايداري با توانايي پوشش سريع اشكالات و نتيجتاً بازسازي مسيرهاي مورد نظر مي‌باشد. حال آنكه استفاده از روشهاي موجود مسير يابي جهت پوشش اشكال مستلزم صرف زماني بيش از حد مناسب مي باشد. شبكه هاي مبتني بر MPLS با توجه به خواص ارتبا‌طي مسير‌نگر با بكارگيري روشهاي بازيافت مناسب مي‌توانند متضمن كيفيت سرويسها و زمان مناسب براي رفع اشكالات از سوي شبكه هاي IP باشند. در اين مقاله يك روش بازسازي جديد جهت پشتيباني از ارتباطات برقرار شده بر چسب دار بر اساس مسيرهاي پشتيباني از پيش تعيين شده ارائه شده است. در توزيع ترافيك دو مدل خود شبيه و پواسن، بصورت مجزا بكار گرفته شده، نتايج حاصله با هم مقايسه و عملكرد روش به كار گرفته شده با افزايش راندمان شبكه و قابليت اطمينان تائيد گرديده است
In order to guaranty the quality of real time services on IP based networks, robust survivability with fast fault recovery and path restoration are the main goals. Many recent restoration methods spend much time for fault recovery and path restoration. MPLS based networks with connection –oriented ability can guaranty QoS by useful restoration method in short time. In this paper we proposed a new restoration mechanism base on pre-assigned end to end protection path .We apply self similar and Poisson process separately for modeling the traffic arrivals time . The comparative analysis between two models reveal the reliability growth gained through applying the proposed algorithm.
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[18 ] آرش دانا، احمد خادم زاده، کامبیز بدیع و شاهرخ ولایی،"یک روش جدید برای بازیافت LSP در شبکه IP بر پایه سوئیچ های برچسبی چند پروتکله (MPLS)، هفتمین کنفرانس سالانه انجمن کامپیوتر ایران، صص 439-477، اسفند 1380.