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HAO LONG (longhao@huawei) MIN YE (amy.yemin@huawei)

Signaling & Routing Extension for Links with Variable Discrete Bandwidth draft-long-ccamp-rsvp-te-availability-03 draft-long-ccamp-ospf-availability-extension-02. HAO LONG (longhao@huawei.com) MIN YE (amy.yemin@huawei.com) Greg Mirsky (gregory.mirsky@ericsson.com)

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HAO LONG (longhao@huawei) MIN YE (amy.yemin@huawei)

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  1. Signaling & Routing Extension for Links with Variable Discrete Bandwidth draft-long-ccamp-rsvp-te-availability-03 draft-long-ccamp-ospf-availability-extension-02 HAO LONG (longhao@huawei.com) MIN YE (amy.yemin@huawei.com) Greg Mirsky (gregory.mirsky@ericsson.com) Alessandro D'Alessandro (alessandro.dalessandro@telecomitalia.it) Himanshu Shah (hshah@ciena.com) • IETF 89 CCAMP March 2014 London

  2. Problem and Solution • Packet switching network may pass through the links with variable discrete bandwidth • Availability is used to describe the bandwidth for such links. • Availability requirement is proposed to consider when setting up an LSP Path(<40Mbps, 99.999%>) e.g., for voice PE PE A B C Resv link bandwidth capacity table

  3. Signaling & Routing Extension • “draft-long-ccamp-rsvp-te-availability-03” addresses the signaling extension • Define an availability filed in bandwidth Profile TLV • Define an availability sub-TLV to specify the availability requirement • “draft-long-ccamp-ospf-availability-extension-02” addresses the routing extension • Define an availability information sub-TLV to notify the availability information for path calculation

  4. Changes • A new co-author: Himanshu Shah • A new appendix to explain the bandwidth and availability • Addressed comments received on the draft • Contention resolution: by comparing the node ID • Backward compatibility: A node who doesn’t support availability TLV should ignore the related information • Editorial improvements

  5. Open Discussion - 1 • Availability value in the signaling extension • Option 1: use the Reserved field(16 bits) • Option 2: define a sub-TLV (32 bits) • The maximum availability value is 0.99999 Ethernet bandwidth profile Availability requirement sub-TLV

  6. Open Discussion - 2 • The routing extension is to define a sub-TLV under ISCD sub-TLV of the link TLV (RFC4203). • Switching capability consideration • Option 1: Bond to a certain switching capability: L2SC • Option 2: Define a switching capability for links with variable discrete bandwidth for backward compatibility ISCD sub-TLV Availability information sub-TLV

  7. Next step • Solicit comments from the group • Update the drafts after the meeting • Thanks

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