TY - GEN
T1 - On the applicability of software defined networking to large scale networks
AU - Luo, Hongbin
AU - Cui, Jianbo
AU - Chen, Gong
AU - Chen, Zhe
AU - Zhang, Hongke
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/25
Y1 - 2014/9/25
N2 - Software-defined networking (SDN) has attracted many research interests among the networking community and has been deployed in many small to moderate networks. Although many approaches have been proposed to address the scalability issue of SDN, however, it is still an open problem whether SDN can be applied to large scale networks such as Tier-1 Internet service providers (ISP) when it works in passive mode. To address this problem, we in this paper analyze the number of flow entries that a switch needs to maintain and the number of flow setup requests per second that a controller needs to deal with, based on real data traces collected from a link between two routers in a Tier-1 ISP. The results show that, if we store a unique flow entry for every flow, SDN cannot be applied to large ISPs. In addition, if switches are required to deal with 12-tuple flow entries, SDN still cannot be applied to large Tier-1 ISPs even if we only setup unique flow entries for flows whose sizes are larger than 100 MB. However, if switches are required to deal with only 2-tuple flow entries, SDN can be applied to large Tier-1 ISPs if we only setup unique flow entries for flows whose sizes are larger than 10 MB.
AB - Software-defined networking (SDN) has attracted many research interests among the networking community and has been deployed in many small to moderate networks. Although many approaches have been proposed to address the scalability issue of SDN, however, it is still an open problem whether SDN can be applied to large scale networks such as Tier-1 Internet service providers (ISP) when it works in passive mode. To address this problem, we in this paper analyze the number of flow entries that a switch needs to maintain and the number of flow setup requests per second that a controller needs to deal with, based on real data traces collected from a link between two routers in a Tier-1 ISP. The results show that, if we store a unique flow entry for every flow, SDN cannot be applied to large ISPs. In addition, if switches are required to deal with 12-tuple flow entries, SDN still cannot be applied to large Tier-1 ISPs even if we only setup unique flow entries for flows whose sizes are larger than 100 MB. However, if switches are required to deal with only 2-tuple flow entries, SDN can be applied to large Tier-1 ISPs if we only setup unique flow entries for flows whose sizes are larger than 10 MB.
KW - Software defined networking (SDN)
KW - applicability
KW - large scale networks
KW - passive mode
UR - https://www.scopus.com/pages/publications/84908191605
U2 - 10.1109/ICCCN.2014.6911845
DO - 10.1109/ICCCN.2014.6911845
M3 - 会议稿件
AN - SCOPUS:84908191605
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
BT - 2014 23rd International Conference on Computer Communication and Networks, ICCCN Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 23rd International Conference on Computer Communication and Networks, ICCCN 2014
Y2 - 4 August 2014 through 7 August 2014
ER -