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pop-count update draft-ietf-pim-pop-count-03 pop-count version 3 - PowerPoint PPT Presentation

Feb 22, 2024 •158 likes •239 views

pop-count update draft-ietf-pim-pop-count-03 pop-count version 3 changes Mainly changes to message format Allow for information fields to be optional Allow for defining new fields in the future New format for link speeds

  1. pop-count update draft-ietf-pim-pop-count-03

  2. pop-count version 3 changes • Mainly changes to message format – Allow for information fields to be optional – Allow for defining new fields in the future • New format for link speeds – Exponent to allow a wide range of speeds to be specified • Minor textual changes – Tried to make text a bit clearer

  3. New message format 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |F|E| Attr Type | Length | Effective MTU | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Flags | Options Bitmap | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Options | . . . . . . . . . +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The changes are the Options Bitmap and the Options

  4. Options Options bitmap: 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |T|s|m|M|d|n|D|z| Unalloc/Rsrvd | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ The bits show which options are present 1 if corresponding option is present 0 if omitted Included options MUST be in the same order as the bits T Transit Oif-List Count s Stub Oif-List Count m Minimum Speed Link M Maximum Speed Link d Domain Count n Node Count D Diameter Count z TZ Count

  5. All Options Example 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |F|E| Attr Type | Length | Effective MTU | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Flags |1|1|1|1|1|1|1|1|0|0|0|0|0|0|0|0| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Transit Oif-List Count | Stub Oif-List Count | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Minimum Speed Link | Maximum Speed Link | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Domain Count | Node Count | Diameter Count| TZ Count | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

  6. Two Options Example 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |F|E| Attr Type | Length | Effective MTU | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Flags |0|1|0|0|0|1|0|0|0|0|0|0|0|0|0|0| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Stub Oif-List Count | Node Count | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

  7. Min/Max Link Speed Format 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Exponent | Significand | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Link speed: Significand * 10 ^ Exponent kbps Allows 3 decimal digits precision Speeds from 1 kbps to 10^67 kbps Examples: Link Speed Exponent Significand ------------ ---------- ------------- 500 kbps 0 500 500 kbps 2 5 155 Mbps 3 155 40 Gpbs 6 40

  8. Next steps • Questions? • Ready for working group last call? – If not, what is missing?

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