Link aggregation sublayer block diagram with das
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Link Aggregation sublayer block diagram with DAS. Ting Ao ( Proposal in July meeting. axbq-tinga-link-aggregation-sublayer-0711-v00.pptx. Service Gateway. Action: Is configured by Gateway selection.

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Link Aggregation sublayer block diagram with DAS

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Link Aggregation sublayer block diagram with DAS

Ting Ao


Proposal in July meeting


Service Gateway

  • Action:

    • Is configured by Gateway selection.

    • Check the frames into/out of my network.

    • Judge whether the frame belong to this device.

  • With this function entity, so that:

    • Make the function entities in DAS sublayer clearer and more understandable without importing complexity.

    • Leave the Frame Collector and Dstributorunchanged AFAP.

    • In 802.1AX, Frame collector is forbidden to transmit frame to Frame distributor. The rule should not be violated in DRNI.

    • Only Service Gateway need to know to which Intra-das link the frame transmitted.

Virutal Aggregator Multiplexer

  • Action:

    • Is created according to the aggregated links information from other nodes by DLIC.

    • Forward the traffic to other node in the same portal

  • Purpose:

    • For every device in the portal, their aggregator looks like to be same. It’s also a consistent with the Figure 7-2 in D0.3

    • Distributor can see all the aggregation links, so that link selection negotiation is getting easier.

    • We should not aggregate the Intra-das link into DLAG directly.

DLAG Internal Coordination

  • Separate from LACP entity as a new function entity.

  • Reason:

    • Information need to coordinate is different with LACP’s

    • We can’t aggregate the intra-das link into DLAG. Otherwise, may need to change the LACP a lot?

    • LACP in DRNI is network to network, while DLIC in Portal is within my network.

    • LACPDU is transmitted on every aggregated links, while DLICPDU is transmitted only on Intra-das link.


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