[quagga-dev 7300] Re: BGP_INFO_HISTORY question

Ruichuan Chen rchen at mpi-sws.org
Fri Oct 16 00:39:49 BST 2009


Thanks, Paul. I feel adding a new flag is the easiest way.

Best regards,
Ruichuan



On Thu, Oct 15, 2009 at 7:09 PM,  <paul at jakma.org> wrote:
> On Tue, 13 Oct 2009, Ruichuan Chen wrote:
>
>> I am writing to inquire whether we could use the command "! CHECK_FLAG
>> (ri->flags, BGP_INFO_HISTORY)" in function "bgp_best_selection" to identify
>> whether the bgp_info ri is newly received?
>
> No, probably not. Add a new flag that has your exact desired semantics.
>
>> And, what is the exact meaning of the BGP_INFO_HISTORY flag?
>
> It means the route is NOT a current entry in the RIB and is there solely for
> historical reference purposes - it should generally be ignored.
>
> The primary use for historical routes is route flap-dampening.
>
> regards,
> --
> Paul Jakma      paul at jakma.org  Key ID: 64A2FF6A
> Fortune:
> Anger is momentary madness.
>                -- Horace
>



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