IPv4%20over%20IEEE%20802.16%20IP%20CS%20draft-ietf-16ng-ipv4-over-802-dot-16-ipcs-04

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IPv4 over IEEE 802.16 IP CSdraft-ietf-16ng-ipv4-o
ver-802-dot-16-ipcs-04

• Syam Madanapalli
• Ordyn Technologies
• Daniel Park
• Samsung
• Samita Chakrabarti
• IP Infusion
• Gabriel Montenegro
• Microsoft

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Background

• Version -03 was presented at Dublin addressing
  WG LC comments
• Major comments
• Default MTU less than 1500 deemed not acceptable
  from an IETF standpoint
• MTU below 1500 scaling issues with future high
  bandwidth link

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Background

• Problem was that Wimax NWG specs specified 1400
  bytes as their MTU size
• Co-authors and Area Director (Jari A.) worked
  together to provide guideline texts for Wimax NWG
  to move to 1500 bytes as default MTU in the next
  revision of their specification

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Notable changes in version -04

• Section 4.3 (Maximum Transmission Unit) now
  states that the default IPCS MTU size is 1500
  bytes
• Section 4.3 also clarifies
• IPCS node IPV4 stack should have capability to
  adjust MTU through DHCP interface MTU option
• In absence of DHCP MTU configuration, the node
  has two choices
• Use default MTU (1500 bytes)
• Determine MTU using mechanism described in
  802.16 Rev2

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Notable changes in version -04

• Appendix C discusses Wimax default MTU (1400)
  for IPCS and it strongly recommends that Wimax
  future specification follow section 4.3 of this
  draft for MTU values

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Next Step

• Co-chairs/Co-authors have forwarded the IPCS
  draft to Wimax NWG for early information and
  review comments
• This draft is ready for AD review at IETF

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Thanks!

• samitac_at_ipinfusion.com