07/01/99 6Bone Routing Report

[SUMIKAWA Munechika (角川宗近)]

Sorry for delay resoponse. I needed a week for investigation the
problem.

masaki> BTW, there are also similar flapping routes that look from WIDE
masaki> Project and contribute great increase of IPv6 traffic on 6bone.

masaki>   0000::/0 path 109 2500 2500 2500 2500 2500 (WIDE)
masaki>   1800::/4 path 109 2500 2500 2500 2500 2500 (WIDE)
masaki> 1.  (0000::/0) had 93371 BGP+ updates (18 unique aspaths)
masaki> 2.  (1800::/4) had 87912 BGP+ updates (16 unique aspaths)

I think It was occured by 'NLRI-Length attribute' probles with
CISCO(AS 109). CISCO have announced and received routes without
NLRI_length suddenly, so CISCO mis-recognizes our routes and announce
them to other pTLA. And frequently termination the BGP connection
cause route flapping.

Now I changed my router configuration, it seems that no curious routes
annouce to 6bone.

Thanks,

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Munechika SUMIKAWA @ WIDE Project