Hi Ketan,

Thanks for your response..

The draft says:
<snip>
   This document defines the B-bit in the LLS Type 1 Extended Options
   and Flags field.  This bit is defined for the LLS block included in
   Hello and Database Description (DD) packets and
*indicates that BFD is   enabled on the link* and that the router requests
strict-mode for BFD.
</smip>

You don't enable multi-hop BFD on a link, instead you enable it b/w two
(multi-hop) routers, right?

How about replacing it with:
indicates that (1) single-hop BFD [RFC5881] is enabled on the link in case
of point-to-point (numbered) and LAN interfaces, and (2) multi-hop BFD
[RFC5883] is enabled between the neighbors in case of virtual links and
point-to-point unnumbered interfaces.

Also, add a note at the beginning of the draft that BFD refers to both
single-hop and multi-hop BFD when not explicitly specified..

Regards,
Muthu

On Sun, Jan 30, 2022 at 10:40 PM Ketan Talaulikar <ketant.i...@gmail.com>
wrote:

> Hi Muthu,
>
> Thanks for your review and your support.
>
> Regarding your question, I would like to clarify that this document
> doesn't specify BFD operations with OSPF. That was done by RFC5882. Indeed
> for virtual links, there would need to be a BFD multi-hop session and the
> same would apply to p-t-p unnumbered.
>
> However, I am not sure what specific applicability or operations need to
> be called out for Strict Mode of operations for those links.
>
> Thanks,
> Ketan
>
>
> On Sun, Jan 30, 2022 at 12:52 PM Muthu Arul Mozhi Perumal <
> muthu.a...@gmail.com> wrote:
>
>> Hi,
>>
>> I support the draft. A quick question:
>> Should it describe the applicability of the mechanism over OSPF virtual
>> links and unnumbered interfaces? With virtual links, one would have to
>> establish a multi-hop BFD session, so it is slightly different from a BFD
>> operational standpoint. For e.g, capability to support single-hop BFD may
>> not translate to the capability to support multi-hop BFD..
>>
>> Regards,
>> Muthu
>>
>> On Thu, Jan 27, 2022 at 10:38 PM Acee Lindem (acee) <acee=
>> 40cisco....@dmarc.ietf.org> wrote:
>>
>>> LSR WG,
>>>
>>>
>>>
>>> This begins a two week last call for the subject draft. Please indicate
>>> your support or objection on this list prior to 12:00 AM UTC on February 11
>>> th, 20222. Also, review comments are certainly welcome.
>>>
>>> Thanks,
>>> Acee
>>>
>>>
>>> _______________________________________________
>>> Lsr mailing list
>>> Lsr@ietf.org
>>> https://www.ietf.org/mailman/listinfo/lsr
>>>
>>
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