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Re: Gen-ART LC review of draft-ietf-roll-routing-metrics-14

2011-01-14 11:03:43
Hi Roni,

Thanks for your thorough review - please see in line JP>

On Dec 20, 2010, at 7:14 PM, Roni Even wrote:

I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, 
please see the FAQ at 
Please resolve these comments along with any other Last Call comments you may 
Document: draft-ietf-roll-routing-metrics-14
Reviewer: Roni Even
Review Date:2010–12–20
IETF LC End Date: 2011–1–5
IESG Telechat date:
Summary: This draft is almost ready for publication as an Standard track RFC.
Major issues:
No Major issues
Minor issues:
1.  In section 2.1 after figure 1 you specify the different fields. Please 
specify the size in bits of the flags field the A-field and the prec field.

JP> Done.

2.  In section 2.1 in example 1 how is it known that all nodes MUST be main 

JP> In this example, we first explain how the headers flags are determined. To 
help clarify I modified the text:


As far as the constraint is concerned, if the constraint signalled in the DIO 
message is not satisfied, the advertising node is just not selected as a parent 
by the node that processes the DIO message.


As far as the constraint is concerned, the object body will carry a node energy 
constraint object defined in Section 3.1 indicating that nodes must be 
mains-powered: if the constraint signalled in the DIO message is not satisfied, 
the advertising node is just not selected as a parent by the node that 
processes the DIO message.

Do you need to provide a value to prec field?

JP> As indicated earlier, the Prec field is only useful when a DAG Metric 
Container contains several Routing Metric objects. In this example, there is 
just one metric (the node energy is a constraint).

3.  In section 3.1 and throughout the document when you define the different 
object you have “recommended value=xx”. I think that since this draft defines 
the table and create the initial table in the IANA consideration section 
these are the actual values. So maybe say that these are the actual values as 
specified in section 6 (6.1)

JP> We added "recommended values" until IANA confirms.

4.  In section 3.1 the flag field – how many bits, specify.

JP> Done.

5.  In section 3.2 figure 4 shows a flag field, how many bits, what is the 

JP> Done.

6.  In section 6 according to rfc5226 “IETF consensus” is now “IETF review”.

JP> Fixed.

7.  In section 6.1 you should say that the table has the initial values and 
add which numbers are available for allocation.

JP> Done.

8.  In section 6.2 what values are available for allocation.  Also say that 
currently the table is empty.

JP> Done.

9.  In section 6.2 is there a reason to create an empty table. Why not do it 
when there is a request to define a TLV

JP> Just to have the registry already in place. There is more than likely be 
TLVs defined in a very near future. This also allows to make sure that all TLVs 
have the same structure.

10.In section 6.3, are there more values allowed, can they be allocated. If 
not why have it managed by IANA.

JP> The A field is a 3-bit field and there are currently 4 defined values.

11.After the table in section in section 6.3 there is a request to create 
another table. Maybe it should be in a separate section.

JP> This is just because we put all registries belonging to the Routing 
Metric/Constraint Common Header in the same section.

12.In section 6.3 “New bit numbers may be allocated”, how many bits are 

JP> The text was misplaced, thanks.

13.The same paragraph in section 6.3 also talks about the registration 
policy, is it different from the one that is common in section 6, why specify 
it again. Also look at comment 6

JP> This was a duplicate. Fixed.

14.Comment 12 and 13 are also true for section 6.4 and 6.5.

JP> Fixed too.

Nits/editorial comments:
1.  In section first paragraph “object” should be “object”
2.  In section 4.3.2 first paragraph “wich” should be “which”

JP> Fixed.

Many Thanks. These changes are all incorporated in revision 15.


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