Encoding of Attributes for Multiprotocol Label Switching Label Switched Path Establishment Using RSV

1
Encoding of Attributes for Multiprotocol Label
Switching Label Switched Path Establishment Using
RSVP-TEdraft-ietf-mpls-rsvpte-attributes-02.txt

• Adrian Farrel (adrian_at_olddog.co.uk)
• Dimitri Papadimitriou (dimitri.papadimitriou_at_alcat
  el.be)
• Jean-Philippe Vasseur (jpv_at_cisco.com)
• Arthi Ayyangar (arthi_at_juniper.net)

2
Changes

• Adopted by WG
• Attributes Flags TLV is variable length for easy
  future extension
• Define default behaviors for absent bits and
  absent TLV
• Clarify the IANA requirements
• Introduce RRO Attributes Subobject
• Collect per hop execution of functions
• Expand the RRO per hop flag space which was only
  eight bits
• Tighten rules where TLVs are unknown or
  unsupported
• Clarify that LSP Attributes apply to individual
  LSPs and not to entire sessions

3
Current Status

• Stable
• Referenced by several drafts
• Temporary registry of experimental bits
• www.olddog.co.uk/lsp-attrib.txt

4
Issues/Actions

• Would there be value in allowing pre-LSP
  attributes on Resv?
• We think we see uses
• It is relatively painless to add an optional
  object
• One more iteration of draft (March)
• Implement and last call