TY - JOUR
T1 - The show must go on
T2 - Fundamental data plane connectivity services for dependable SDNs
AU - Borokhovich, Michael
AU - Rault, Clement
AU - Schiff, Liron
AU - Schmid, Stefan
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Software-defined network (SDN) architectures raise the question of how to deal with situations where the indirection via the control plane is not fast enough or not possible. In order to provide a high availability, connectivity, and robustness, dependable SDNs must support basic functionality also in the data plane. In particular, SDNs should implement functionality for inband network traversals, e.g., to find failover paths in the presence link failures. This paper shows that robust inband network traversal schemes for dependable SDNs are feasible, and presents three fundamentally different mechanisms: simple stateless mechanisms, efficient mechanisms based on packet tagging, and mechanisms based on dynamic state at the switches. We show how these mechanisms can be implemented in today's SDNs and discuss different applications.
AB - Software-defined network (SDN) architectures raise the question of how to deal with situations where the indirection via the control plane is not fast enough or not possible. In order to provide a high availability, connectivity, and robustness, dependable SDNs must support basic functionality also in the data plane. In particular, SDNs should implement functionality for inband network traversals, e.g., to find failover paths in the presence link failures. This paper shows that robust inband network traversal schemes for dependable SDNs are feasible, and presents three fundamentally different mechanisms: simple stateless mechanisms, efficient mechanisms based on packet tagging, and mechanisms based on dynamic state at the switches. We show how these mechanisms can be implemented in today's SDNs and discuss different applications.
KW - Algorithms
KW - Connectivity
KW - Local Fast Failover
KW - OpenFlow
KW - Software-Defined Networking (SDN)
UR - http://www.scopus.com/inward/record.url?scp=85043578404&partnerID=8YFLogxK
U2 - 10.1016/j.comcom.2017.12.004
DO - 10.1016/j.comcom.2017.12.004
M3 - Journal article
AN - SCOPUS:85043578404
SN - 0140-3664
VL - 116
SP - 172
EP - 183
JO - Computer Communications
JF - Computer Communications
ER -