Abstract
Technology trends such as Software-Defined Networking (SDN) are transforming networking services in terms of flexibility and faster deployment times. SDN separates the control plane from the data plane with its centralised architecture compared with the distributed approach used in other management systems. However, management systems are still required to adapt the new emerging SDN-like technologies to address various security and complex management issues. Simple Network Management Protocol (SNMP) is the most widespread management protocol implemented in a traditional Network Management System (NMS) but has some limitations with the development of SDN-like services. Hence, many studies have been undertaken to merge the SDN-like services with traditional network management systems. Results show that merging SDN with traditional NMS systems not only increases the average Management Information Base (MIB) polling time but also creates additional overheads on the network. Therefore, this paper proposes a dynamic scheme for MIB polling using an additional MIB controller agent within the SDN controller. Our results show that using the proposed scheme, the average polling time can be significantly reduced (i.e., faster polling of the MIB information) and also requires very low overhead because of the small sized OpenFlow messages used during polling.
Highlights
Introduction[2], live migration [3] [4] etc., various network services are deployed on the Internet for dynamic resource provisioning
Software-Defined Networking (SDN) commenced with Simple Network Management Protocol (SNMP) protocol shows that the average polling time is lower with respect to the higher link capacities between the Top of Rack and the Aggregate
Our observation is the number of retransmissions significantly increases with the increase in background traffic during the Management Information Base (MIB) polling initiated by the Network Management System (NMS)
Summary
[2], live migration [3] [4] etc., various network services are deployed on the Internet for dynamic resource provisioning. These advances generate a considerable amount of Internet traffic volume and require advance network management for security and high efficiency. We show that the average response time is less than a second while the Considering 80% background traffic, the average polling time can be very high i.e., up to several minutes using NMS MIB polling, whereas our MIB controller 36. Considering MIB polling using NMS, many retransmissions occur while 16 active switch agents are replying to the MIB requests and the average polling time observed is up to 118 sec. Our approach shows that the average polling time is less than 6 sec
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