Division 4.4 Classes of service

The Central SIS II will support the capability of prioritisation of queries/alerts. As a derived requirement, the Communication Infrastructure will also support the possibility of traffic prioritisation.

The network prioritisation parameters are assumed to be set by the Central SIS II for all packets that require it. Weighted Fair Queuing will be used. This implies that the Communications Infrastructure must be able to take over the prioritisation assigned to the data packets on the source LAN and treat the packets accordingly within its own backbone network. Furthermore, at the remote site the Communication Infrastructure must deliver the initial packets containing the same prioritisation as set in the source LAN.