[j-nsp] BGP advertise-inactive (even not the *best* BGP route)

[Tony Li]

Actually, the hack would be to stick a route identifier into the mix,
just as was done in IDRP.  Not too hard to hack.  However, the
pain/gain ratio is all wrong...

Tony



On Aug 19, 2004, at 4:06 PM, Richard A Steenbergen wrote:

> On Thu, Aug 19, 2004 at 02:27:45PM -0700, Paul Goyette wrote:
>> Well,
>>
>> Whereas, BGP advertises a set of path attributes and a list
>> of prefixes to which that set of attributes applies, _and_
>>
>> Whereas, BGP protocol spec says that if a prefix is later
>> associated with a new set of path attributes then the new set
>> replaces the old set,
>>
>> How would you propose that we associate a single prefix with
>> more than one set of attributes?
>
> Not such much useful for regular routing (pretty darn useless in fact, 
> you
> couldn't make a best path decision which is different from your uplink
> device's forwarding table anyways) as it is for external analysis 
> tools.
>
> I'll agree with you that it would be slightly tricky to implement (you
> would have to look at some external info like next-hop, and keep your 
> own
> state, to determine if it is a new nlri or a replacement), but it sure 
> as
> hell beats the current options like snmp and cli for doing data
> collection.
>
> -- 
> Richard A Steenbergen <ras at e-gerbil.net>       
> http://www.e-gerbil.net/ras
> GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 
> 2CBC)
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