Weighted Round Robin Load Balancer to Enhance Web Server Cluster in OpenFlow Networks

1 Weighted Round Robin Server

A load-aware weighted round-robin algorithm forIEEE 802.16 networks

The IEEE 802.16 standard was designed to provide quality-of-service (QoS) guarantees for various classes of traffic with diverse QoS requirements. Packet-scheduling algorithms play a critical role in providing such guarantees. Weighted round robin (WRR) is one of the most commonly used scheduling algorithms, because of its simplicity and low computational overhead. However, it suffers from perf...

OpenFlow-Based Dynamic Server Cluster Load Balancing with Measurement Support

—In the current cloud computing environment, the size of the server cluster in the data center is growing in response to the increasing traffic. Due to the use of multiple replicas in the server cluster to provide the same services, effective load balancing as a key technology is very important. In this paper we implement and evaluate an alternative loadbalancing architecture using OpenFlow sw...

Uniform Weighted Round Robin

Quality of service capability of input queued packet switches is investigated. A packet transfer scheduling problem is formulated whereby each input-output pair is scheduled for packet transfers by regularly spaced deadlines, in compliance with a speciied data rate. Suitable applications include ATM networks and satellite switched TDMA systems that support periodic traac with delay guarantees. ...

OpenFlow-Based Server Load Balancing Gone Wild

Today’s data centers host online services on multiple servers, with a front-end load balancer directing each client request to a particular replica. Dedicated load balancers are expensive and quickly become a single point of failure and congestion. The OpenFlow standard enables an alternative approach where the commodity network switches divide traffic over the server replicas, based on packet-...