Re: [irs-discuss] IRS Problem Statement Posted

Robert Raszuk <robert@raszuk.net> Tue, 31 July 2012 16:19 UTC

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Date: Tue, 31 Jul 2012 18:19:54 +0200
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To: Alia Atlas <akatlas@gmail.com>
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Subject: Re: [irs-discuss] IRS Problem Statement Posted
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Alia,

> While I am not interested in discussing/refining/bashing OpenFlow on
> IRS, except if necessary as to how to compares/contrasts to IRS in
> terms of features,  I do recall (sleep helps) that the L3 matching
> capabilities are slightly beyond host routes since it does support
> arbitrary wildcarding of bits for the flow lookup.
>
> That is still rather different than a longest-prefix match.

I can do longest prefix match today using OF priority in each table.

Sure maybe it is not optimal as compared with nice tree lookup 
alternatives we see today with pure IP destination based lookup and of 
course there is room for improvement. But let's work based on the 
correct assumptions.

> It is
> still dealing with the forwarding plane and not the RIBs, IGPs, BGP,
> LDP, RSVP-TE, etc.

And IMHO this is a feature not a bug.

Best regards,
R.