A Distributed Decision Mechanism for Controller Load Balancing Based on Switch Migration in SDN

Software Defined Networking

(SDN) provides flexible network management

by decoupling control plane from data plane.

And multiple controllers are deployed to improve

the scalability and reliability of the control

plane, which could divide the network into

several subdomains with separate controllers.

However, such deployment introduces a new

problem of controller load imbalance due to

the dynamic traffic and the static configuration

between switches and controllers. To address

this issue, this paper proposes a Distribution

Decision Mechanism (DDM) based on switch

migration in the multiple subdomains SDN

network. Firstly, through collecting network

information, it constructs distributed migration

decision fields based on the controller

load condition. Then we choose the migrating

switches according to the selection probability,

and the target controllers are determined

by integrating three network costs, including

data collection, switch migration and controller

state synchronization. Finally, we set the

migrating countdown to achieve the ordered

switch migration. Through verifying several

evaluation indexes, results show that the proposed

mechanism can achieve controller load

balancing with better performance.

Cisco Siguria e Kompjuterave Inxhinieri Administrim rrjeti Wireless

ID Projekti: #18516003

Rreth projektit