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TRILL Multi Topology Encoding and Nickname Expansion draft- tissa -trill- mt -encode-01

TRILL Multi Topology Encoding and Nickname Expansion draft- tissa -trill- mt -encode-01. Tissa Senevirathne Naveen Nimmu Sam Aldrin. No Changes to the TRILL header Ability to selectively include or exclude proposed extensions Allow to interface with older RBridges

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TRILL Multi Topology Encoding and Nickname Expansion draft- tissa -trill- mt -encode-01

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  1. TRILL Multi Topology Encoding and Nickname Expansiondraft-tissa-trill-mt-encode-01 Tissa Senevirathne Naveen Nimmu Sam Aldrin

  2. No Changes to the TRILL header • Ability to selectively include or exclude proposed extensions • Allow to interface with older RBridges • Minimize or eliminate need for mapping of Topology ID space Objective

  3. Encode as part of the outer header • Separate EtherTypeto demarcate Multi Topology ID • Separate EtherTypeto demarcate Upper bits of nicknames Methodology

  4. Outer Header MT-ID EthType=X EthType=Y EG-NK IG-NK TRILL Header Encoding Inner Frame

  5. Older Rbridges belong only to a single topology • New Rbridges selectively encode the MT-ID MT Aware cloud New RB New RB Old RB Multi Topology Interoperability Non MT Aware cloud They belong only to a single topology Encode MT-ID Do not Encode MT-ID

  6. Green field deployments use entire 24bits. • In mixed mode • Old RBridges in a different set of topologies • New RBridges in 24bitRBridge specific topologies • Old and new RBridges can not communicate, directly. Nickname Interoperability

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