Re: [manet] I-D Action: draft-ietf-manet-dlep-lid-extension-01.txt

[Henning Rogge <[e-mail]>]

On Mon, Feb 5, 2018 at 12:56 PM, Rick Taylor
<[e-mail]> wrote:
> Hi All,
>
> On Mon, 2018-02-05 at 11:01 +0100, Henning Rogge wrote:
>> Hi,
>>
>> I think I like the new text two, its easy to read and introduce the
>> new concept quickly.
>
> Thank you (and Georg as well) very much!
>
>>
>> The only thing I am concerned about is the "empty" flags field... do
>> we already have an usecase for this?
>
> I must admit, I copy and pasted the text from elsewhere, and then
> realized I had no flags.
>
> However, one possible flag could used to distinguish between Links to
> Destinations with an IP address (addressable destinations/ Layer 3
> radio net) and Links to  Infrastructure (no IP address, just a subnet).
>  Although this extension doesn't need to differentiate, it might be
> useful for the router to know the difference when used with other
> extensions (hop control perhaps).

Wouldn't it be easier to look at the prefix length of the IP?

>> If not, we could remove it and introduce it (if necessary) in an
>> extension... we could discover the existence of an (optional) flags
>> field by comparing the length of the link-id TLV with the (known)
>> value of the link-id-length TLV.
>
> Yes, if a flags field was needed later, a 'Link Identifiers Flags'
> extension could introduce it legitimately.

So what do you think, just drop the flags field?

Henning