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Using BGP to Bind MPLS Labels to Address Prefixes
RFC 8277

Yes

(Alia Atlas)
(Deborah Brungard)

No Objection

Warren Kumari
(Ben Campbell)
(Mirja K├╝hlewind)
(Spencer Dawkins)
(Suresh Krishnan)
(Terry Manderson)

Note: This ballot was opened for revision 02 and is now closed.

Warren Kumari
No Objection
Alia Atlas Former IESG member
Yes
Yes (for -02) Unknown

                            
Deborah Brungard Former IESG member
Yes
Yes (for -02) Unknown

                            
Alexey Melnikov Former IESG member
(was Discuss) No Objection
No Objection (2017-08-17 for -03) Unknown
Thank you for working to address my DISCUSS.

In Section 2.3:

      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
     +-+-+-+-+-+-+-+-+
     |    Length     |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                 Label                 |Rsrv |S~
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     ~                 Label                 |Rsrv |S|
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                          Prefix                               ~
     ~                                                               |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                    Figure 3: NLRI With Multiple Labels

   - Length:

      The Length field consists of a single octet.  It specifies the
      length in bits of the remainder of the NLRI field.

I would like to double check that my math is correct. With SAFI=128 and AFI=2,
assuming the prefix length of 192 bits, this will leave space for:

 (255-192)/24 = 2.625. So this configuration only allows for 2 labels to be included, right?
Ben Campbell Former IESG member
No Objection
No Objection (for -02) Unknown

                            
Eric Rescorla Former IESG member
No Objection
No Objection (2017-08-02 for -02) Unknown
Document: draft-ietf-mpls-rfc3107bis-02.txt

S 2.1
I note that you use 255 to mean "any number of labels" and 0 is marked
ignore. Is there a reason not to use 255 as a concrete number and 0
to mean "any number"? This is just for my information.


S 2.3.
      Note that failure to set the S bit in the last label will make it
      impossible to parse the NLRI correctly.  See Section 3 paragraph j
      of [RFC7606] for a discussion of error handling when the NLRI
      cannot be parsed.

It would be helpful if you explicitly said that you parse this value
by reading labels one at a time until you get a non-zero S bit. It's
implicity, but having it be clear would be nice.
Kathleen Moriarty Former IESG member
No Objection
No Objection (2017-08-02 for -02) Unknown
The security considerations section should at least mention that none of the tunnel methods provide encryption or authentication of those mentioned earlier in the document (Section 4: LSP, IP, GRE, & UDP).  Although this isn't listed as a discuss, I'd appreciate the comment being addressed with an update to the text (1-2 sentences at most).  Thank you.
Mirja K├╝hlewind Former IESG member
No Objection
No Objection (for -02) Unknown

                            
Spencer Dawkins Former IESG member
No Objection
No Objection (for -02) Unknown

                            
Suresh Krishnan Former IESG member
No Objection
No Objection (for -02) Unknown

                            
Terry Manderson Former IESG member
No Objection
No Objection (for -02) Unknown