Hi Acee,

For argument sake (this is non-blocking), I don't see difference between static 
routes and protocol-learned routes. Why would protocol-learned routes need to 
have nexthop-specific backup while static routes don't?

Thanks.
Jeffrey

-----Original Message-----
From: Acee Lindem <[email protected]>
Sent: Thursday, May 4, 2023 10:51 AM
To: Jeffrey (Zhaohui) Zhang <[email protected]>
Cc: Yingzhen Qu <[email protected]>; Routing Directorate 
<[email protected]>; [email protected]; 
[email protected]; [email protected]
Subject: Re: Rtgdir last call review of draft-ietf-rtgwg-yang-rib-extend-16

[External Email. Be cautious of content]


Hi Jeffrey,


> On May 1, 2023, at 5:05 PM, Jeffrey (Zhaohui) Zhang <[email protected]> 
> wrote:
>
> Hi Yingzhen,
>  I can go with that if that’s what the authors/WG’s preference, but my 
> preference would be to cover it in the base specification itself. What’s the 
> harm?
>  Anyway, this is not a blocking comment.

The way the backup static route use case is handled is by configuring multiple 
next-hops with different preferences. This is one of the most useful  
extensions provided by this augmentation.

Thanks,
Acee


>  Thanks.
> Jeffrey
>  From: Yingzhen Qu <[email protected]>
> Sent: Monday, May 1, 2023 5:01 PM
> To: Jeffrey (Zhaohui) Zhang <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected]
> Subject: Re: Rtgdir last call review of
> draft-ietf-rtgwg-yang-rib-extend-16
>  [External Email. Be cautious of content]  Hi Jeffrey,  Considering
> this is not commonly used, I'd suggest if someone really needs it they can do 
> an easy augmentation using the grouping defined in this draft.
>  Thanks,
> Yingzhen
>  On Mon, May 1, 2023 at 1:52 PM Jeffrey (Zhaohui) Zhang <[email protected]> 
> wrote:
> Hi Yingzhen,
>  From: Yingzhen Qu <[email protected]>
> Sent: Monday, May 1, 2023 4:46 PM
> To: Jeffrey (Zhaohui) Zhang <[email protected]>
> Cc: [email protected]; [email protected];
> [email protected]; [email protected]
> Subject: Re: Rtgdir last call review of
> draft-ietf-rtgwg-yang-rib-extend-16
>  [External Email. Be cautious of content]  Hi Jeffrey,  Thanks for the
> review, please see my answers below.
>  Thanks,
> Yingzhen
>  On Mon, May 1, 2023 at 11:43 AM Zhaohui Zhang via Datatracker 
> <[email protected]> wrote:
> Reviewer: Zhaohui Zhang
> Review result: Has Issues
>
> I have the following one nit comment and one question:
>
>   augment "/rt:routing/rt:ribs/rt:rib/"
>     + "rt:routes/rt:route/rt:next-hop/rt:next-hop-options/"
>     + "rt:next-hop-list/rt:next-hop-list/rt:next-hop"
>   {
>     description
>       "Augment the multiple next hops with repair path.";
>     uses repair-path;
>   }
>
> The description is slightly misleading. It is to agument a single
> next-hop in the next-hop-list, not "multiple next hops".
> [Yingzhen] how about: "Augment the next-hop with a repair path."
>  Zzh> Good.
>  Shouldn't the repair path be applicable to static routes as well?
> [Yingzhen]: Theoretically you can have a repair-path for a static route, but 
> have you seen this in deployment?
>  Zzh> Whether anyone implemented/deployed it that way, I think it’s quite 
> reasonable and desired to have it covered in the spec. For example, a static 
> route could be using if1 by default but if2 as backup (in case if1 is down).
>  Zzh> Jeffrey
>  Juniper Business Use Only
>
> Juniper Business Use Only



Juniper Business Use Only
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