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A Transactional Approach to Configuring Telecommunications
Services
Tim Kempster
(tdk@dcs.ed.ac.uk)
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
MIB
MIB
MIB
MIBMIB
•A Transport Medium (Fiber, satellite, microwave)
•Network Nodes (routers, switches, relays)
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
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