Samenvatting
The Highways Agency's current roadside network infrastructure is based on20-year-old communications technology. With the general move to Internet protocols (IP), the Highways Agency is keen to replace its legacy systems with a more modern IP infrastructure, offering cost savings, flexible routing, disaster recovery sites and simplification of the network. An IP network is fully connected, allowing any device to exchange data with any other, which raises a number of security, verification and management issues. This paper examines how the legacy protocols will be transmitted over IP, the issues involved in mixed legacy and IP networks and the measures beingplanned to address these. For the covering abstract see E134653.