[alto] Review of draft-ietf-alto-xdom-disc and supporting WGLC.

[Qiao Xiang <[e-mail]>]

Dear Sebastian, Martin and WG members,

I reviewed the draft-ietf-alto-xdom-disc document. Overall the document is
well written. It provides a smart solution to address Req. AR-33 in
RFC6708. The idea to use reverse DNS lookup for cross-domain server
discovery is elegant. I add some editorial comments for this document in
the following. Other than these, it is my opinion that this document should
be last called.


===Comments===
Section 3
Page 12, I might be extra picky here, but the title of this section is
formatted as:
"Using the ALTO Protocol with  ALTO Cross-Domain Server Discovery",
while it should be formatted as:
"Using the ALTO Protocol with ALTO Cross-Domain Server Discovery".
with an extra space after "with" deleted.

Section 3.1
Page 13, line 1: "in the subsection below." Based on the context, this
subsection refers to Section 3.4. It should be stated explicitly.

Section 3.4
Page 14, case 4:
"...the ALTO client should split the list of source addresses, and perform
separately for each source address the same steps as in case 1, as
specified above.  As an alternative, the ALTO client could also split the
list of destination addresses,..."

the expression should be consistent with case 3. I suggest it is changed to:

"...the ALTO client may split the list of source addresses, and perform
separately for each source address the same steps as in case 1, as
specified above.  As an alternative, the ALTO client may also split the
list of destination addresses,..."

Appendix A
Page 24, para 1: "A solution for the problem described in the previous
section". Which section is referred to should be explicitly stated.

Appendix B
Page 29, all the "m"s in the equation computing P(X=k) should be "M"



Best
Qiao
-- 
Qiao Xiang
Postdoctoral Fellow,
Department of Computer Science,
Yale University