[AusNOG] Small Pipe BNE/Agile issue

[Matthew Moyle-Croft]

David J. Hughes wrote:
> 2 questions really - why is Agile advertising a /26 and why are you  
> accepting a /26 from another AS  :-)
>   
Sorry I didn't reply earlier but:

PIPE allow people to advertise longer than /24s.   If we don't accept 
and pass them on then we end up with people complaining that some 
traffic takes a transit path etc to them.   Basically it's that a lot of 
people use longer-prefixes as a traffic engineering solution (more 
specific wins) rather than consistent prefix advertisement.  Hence some 
providers into PIPE exchanges in Oz advertise a gazillion /24s or longer 
direct from IGP.   This is one of the issues with MLPAs.

Maybe MLPA vs Bilateral debate is a good idea for the peering session at 
AUSNOG2?  

MMC

-- 
Matthew Moyle-Croft - Internode/Agile - Networks
Level 4, 150 Grenfell Street, Adelaide, SA 5000 Australia
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