Towards systematic design of enterprise networks
CoNEXT '08 Proceedings of the 2008 ACM CoNEXT Conference
Unraveling the complexity of network management
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Characterizing VLAN-induced sharing in a campus network
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
Mining policies from enterprise network configuration
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
A toolkit for automating and visualizing VLAN configuration
Proceedings of the 2nd ACM workshop on Assurable and usable security configuration
A systematic approach for evolving VLAN designs
INFOCOM'10 Proceedings of the 29th conference on Information communications
CloudPolice: taking access control out of the network
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Demystifying configuration challenges and trade-offs in network-based ISP services
Proceedings of the ACM SIGCOMM 2011 conference
Towards systematic design of enterprise networks
IEEE/ACM Transactions on Networking (TON)
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In this paper, we present one of the first studies characterizing VLAN usage in a large operational network. Our study employs a "white-box" approach, based on analysis of switch and router configuration files, and interactions with network operators. Our findings are: (i) VLANs are extensively used to enable users at physically disparate locations to be treated as a group; (ii) the performance inefficiencies resulting from such usage is significant; and (iii) the inefficiencies are exacerbated by sub-optimal placement policies. Finally, we identify potential sources of errors that may arise with VLAN configurations, and demonstrate their prevalence.