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| Content Provider | ACM Digital Library |
|---|---|
| Author | Kim, Changhoon Greenberg, Albert Bansal, Deepak Kern, Randy Wu, Hongyu Kumar, Hemant Patel, Parveen Karri, Naveen Yuan, Lihua Murthy, Ashwin Maltz, David A. Zikos, Marios |
| Abstract | Layer-4 load balancing is fundamental to creating scale-out web services. We designed and implemented Ananta, a scale-out layer-4 load balancer that runs on commodity hardware and meets the performance, reliability and operational requirements of multi-tenant cloud computing environments. Ananta combines existing techniques in routing and distributed systems in a unique way and splits the components of a load balancer into a consensus-based reliable control plane and a decentralized scale-out data plane. A key component of Ananta is an agent in every host that can take over the packet modification function from the load balancer, thereby enabling the load balancer to naturally scale with the size of the data center. Due to its distributed architecture, Ananta provides direct server return (DSR) and network address translation (NAT) capabilities across layer-2 boundaries. Multiple instances of Ananta have been deployed in the Windows Azure public cloud with combined bandwidth capacity exceeding 1Tbps. It is serving traffic needs of a diverse set of tenants, including the blob, table and relational storage services. With its scale-out data plane we can easily achieve more than 100Gbps throughput for a single public IP address. In this paper, we describe the requirements of a cloud-scale load balancer, the design of Ananta and lessons learnt from its implementation and operation in the Windows Azure public cloud. |
| Starting Page | 207 |
| Ending Page | 218 |
| Page Count | 12 |
| File Format | |
| ISSN | 01464833 |
| DOI | 10.1145/2534169.2486026 |
| Journal | ACM SIGCOMM Computer Communication Review (CCRV) |
| Volume Number | 43 |
| Issue Number | 4 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1993-07-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Distributed systems Software defined networking Server load balancing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Software |
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