Re: [OSPF] OSPF Link Overload - draft-hegde-ospf-link-overload-01

Hi All,

In support of the draft : draft-hegde-ospf-link-overload-01
Draft makes sense in below scenario I suppose, I could be wrong.

Case where Router detectes some fault in link, would like to advertize link as unusable for a while.

If any router using TI-LFA for FRR might be using this link for stiching P & Q-nodes. 
Link Overload sub TLV might help LFA clacualting node to use some other link for that period of time.

Possibly router under maintainence could be refresh router LSA with out this link, Backward link check fails 
and link under maintaince will not be used. I think this would be treated as topology change which is not the case. 

I feel Overloading Node and Link are done for short period of time and might come handy while debugging/isolating network issues.

Thanks & Regards
Anil S N

"Be liberal in what you accept, and conservative in what you send" - Jon Postel

> -----Original Message-----
> From: OSPF [mailto:ospf-bounces@ietf.org] On Behalf Of Pushpasis Sarkar
> Sent: 30 September 2015 10:28
> To: Les Ginsberg (ginsberg); Shraddha Hegde; Acee Lindem (acee)
> Cc: Hannes Gredler; OSPF WG List; Mohan Nanduri; Jalil, Luay
> Subject: Re: [OSPF] OSPF Link Overload - draft-hegde-ospf-link-
> overload-01
> 
> Hi Les,
> 
> 
> 
> 
> On 9/30/15, 9:45 AM, "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
> wrote:
> 
> >><Shraddha>As I indicated before, max-metric can work in most common
> >>scenarios but not all. There could be cases where an alternate path
> >>cannot be found Satisfying the constraints so LSP remains on the link
> >>undergoing maintenance since the link is still a last resort link.
> >
> >[Les:] Which seems to me to be exactly the definition of link of last
> resort i.e. in the absence of any other alternative use the link
> undergoing maintenance.
> >??
> [Pushpasis] What if the operator does not want any traffic on those
> links at all? Should not there be a way to ensure that as well?
> 
> >
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