Test Ortamları için Ryu’nun REST API’leri ile SDN Üzerinde Protokol Tabanlı Trafik Akışı Düzenlemesi

Öz

Geleneksel ağlar, katı kural tabanlı konfigürasyonları ve donanımsal bağımlılıklar nedeniyle çok sayıda zorluk yaşamaktadır. Bu kısıtlamalar, esnekliği sınırlamakta ve ağ cihazlarının sıkı entegre edilmiş karar verme mantığı sebebiyle değişen ağ koşullarına hızlı adaptasyonu engellemektedir. Yazılım Tanımlı Ağlar (SDN), ağ kararlarını kontrol eden kontrol düzlemini, paket iletimi görevini üstlenen veri düzleminden ayırarak önemli bir paradigma değişimi sağlar. Bu ayrım sayesinde ağ yöneticileri, programlanabilir çözümleri dinamik bir biçimde uygulayabilir ve ağ işlemlerini merkezi olarak kontrol edebilir. Böylece, ölçeklenebilirlik ve esneklik önemli ölçüde artırılır. Bu çalışma, Open vSwitch (OVS), Ryu kontrolcüsü ve ilişkili RESTful API’lerini kullanan SDN tabanlı trafik akışı düzenleme sistemi sunmaktadır. Sistem, farklı uygulama katmanı protokollerinin değişen ihtiyaçlarını karşılayacak biçimde tasarlanmış, Hizmet Kalitesi (QoS) kurallarını dinamik olarak uygulama yeteneğine sahiptir. Protokol bazlı trafik yönetimi sayesinde bant genişliği etkin şekilde tahsis edilir ve ağ gecikmesi azalır. Ryu kontrolcüsü tarafından sağlanan merkezi kontrol, QoS politikalarının dinamik ve esnek uygulanmasını kolaylaştırmakta ve ağ koşullarındaki değişikliklere hızlı cevap verilmesini mümkün kılmaktadır.

Anahtar Kelimeler

• Yazılım Tanımlı Ağlar
• Hizmet Kalitesi
• Ağ Trafiği

Protocol-Based Traffic Flow Regulation on SDN with Ryu’s REST APIs for Testbeds

Öz

The conventional network has numerous challenges due to its strict rule-based configurations and dependencies. Software-Defined Networking (SDN) responds by separating the control plane, which controls network decisions, from the data plane, in the role of packet forwarding, therefore creating a paradigm change. This study proposes an SDN-based traffic flow regulation framework utilizing Open vSwitch (OVS), the Ryu controller, and its associated RESTful APIs. Designed primarily to enforce Quality of Service (QoS) rules dynamically, the framework is flexible enough to meet the changing needs of several application-layer protocols. The centralized control facilitated by the Ryu controller enables the dynamic and flexible implementation of QoS rules and rapid response to changes in network conditions. Validation of the proposed system is performed through extensive real-time traffic monitoring using packet analysis tools such as TCPDump and Wireshark. Experimental results show that SDN-based design emphasizes its potential power as a practical solution to conventional networking limitations since it greatly improves network performance and responsiveness.

Anahtar Kelimeler

• Software-Defined Networking
• Quality of Service
• Network traffic

Kaynakça

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