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Transcript
A Transactional Approach to Configuring Telecommunications Services Tim Kempster ([email protected]) Changing Environment • Telecommunications providers now route voice, data, fax and broadband services over wide area IP networks. • Routers (Network Nodes) are becoming more intelligent and programmable e.g. Intel IXP1200 vs ASIC. • How do we manage and reconfigure these Networks? Simple Network Model •A Transport Medium (Fiber, satellite, microwave) •Network Nodes (routers, switches, relays) MIB MIB MIB MIB MIB Current Management Techniques • Each Network Node (NN) has a MIB which contains fields that can be read and or written to. • Currently, SNMP supports GetRequest and SetRequest Methods on fields in the MIB. Motivation for a Transactional Approach • A reconfiguration task often requires atomic changes to, and reads form, MIBs at several network nodes. • When reading several MIB values it is useful to see a consistent view. We should not read the partial updates of other reconfiguration tasks. The Solution
