Re: [Idr] Solicit feedbacks on draft-dong-idr-end-of-rib-use-extension

[Robert Raszuk <[e-mail]>]

Hi Jie,

> It's good that we agree on this scenario. IMO now GR capability with
> null AFI/SAFI is for signaling "GR helper and EoR".

I would not agree with that. It is in fact just the opposite.

> If we want to use it to signal EoR only, we may need another way to
 > signal the GR helper capability.

+

> IMO the two scenarios mentioned in sec 4 cannot be signaled
> separately through one single capability format. Thus some additional
> flag needs be defined

While I did suggested the addition of flag after rethinking this a bit 
more I do not think it is necessary.

Here is my idea:

--

* When you signal GR capability with null AFI/SAFI list - it just means 
use of EOR - it does not mean you support helper mode.

* When you signal GR capability with non-null AFI/SAFI (at least one 
AFI/SAFI included) - it will mean use of EOR, helper mode support + GR 
support for this/those AFI/SAFIs.

--

If the GR RFC will clarify that to reflect such semantics I think all 
confusions are addressed and all cases covered without any need for 
protocol extension.

Thoughts ?

Thx,
R.