Re: [i2rs] RIB Model draft

[t.petch <[e-mail]>]

----- Original Message -----
From: "Nitin Bahadur" <[e-mail]>
To: "Joel M. Halpern" <[e-mail]>; "Russ White" <[e-mail]>
Cc: <[e-mail]>
Sent: Thursday, October 10, 2013 7:13 PM
<snip>
>
>AS Paths are a BGP construct.  If you are not running BGP then the
>question above (about two paths from the I2RS agent) would seem to
>apply.  If you do have a BGP running, then the BGP is usually where
that
>sort of policy lives.  My concern is that this mechanism assumes a RIB
>agent that handles BGP specific operations.  I would prefer to leave
BGP
>mediation to the BGP model.

There were folks who had expressed interest in inter-domain paths.
That's
why this
was added. I agree with you that the handling logic will be BGP'ish and
there is an
implicit assumption that the RIB agent can handle this.

However, it's obvious (at least to me), that most of the use-cases for
I2RS will be
intra-domain and a device that does not support inter-as/bgp should be
fine for
most of the deployment use-cases.

<tp>
I keep on thinking that producing designs without agreed requirements,
use cases, is often a costly mistake.

My thinking on use cases was quite different, but unless and until we
have the discussion on eg
 draft-white-irs-use-case-00.txt et al.
who knows?

Tom Petch




<snip>