OpenFlow MPLS and Open Source Label-Switched Router
This content delves into the integration of MPLS with OpenFlow protocol, enabling the enhancement of data plane actions and controller control over MPLS paths. It discusses modifications in packet headers, actions for MPLS virtual ports, and the NetFPGA implementation for label-switched routing. Explore the implementation of MPLS label stack, services definition, and actions like Push, Pop, and Swap for label-switched paths programming.
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Presentation Transcript
OpenFlow MPLS and the Open Source Label Switched Router ITC 11 James kempf et al. Google.com and Stanford.edu
Introduction Modify the open flow packet header MPLS Label stack Add the actions of MPLS to openflow Virtual port: allow the data plane to do the actions Allow controller to control the MPLS path NetFPGA Implementation Open source label switched router
Modify the packet header Increase the size of the tuple used for flow identification to add the MPLS Label stack Label 1 define the services (ex: VPN), Label 2 define the transport tunnel.
Add the actions of MPLS Virtual port: an isolated abstraction. Rather than inserting the MPLS protocol actions into the basic OpenFlow packet. Actions: Push Pop Swap The OpenFlow protocol was extended with the following messages to allow the controller to program label switched paths (LSPs) into the switches
NetFPGA Implementation 2000$ US dollars
Open source label switched router NetFPGA: receive the pakcet LDP daemon: allows two devices to form an adjacency and establish label bindings for label switched paths LSP Synchronizer: polls the MPLS LFIB in the kernel periodically for changes
