Re: [Isis-wg] ISIS in multiarea seamless MPLS
Saku Ytti <saku@ytti.fi> Thu, 21 August 2014 06:43 UTC
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Date: Thu, 21 Aug 2014 09:43:00 +0300
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From: Saku Ytti <saku@ytti.fi>
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Subject: Re: [Isis-wg] ISIS in multiarea seamless MPLS
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RFC6822 appears to be the canonical solution to the problem? Separate LSDB to the separate aggregation networks. On 20 August 2014 23:56, Saku Ytti <saku@ytti.fi> wrote: > Hi, > > http://tools.ietf.org/html/draft-ietf-mpls-seamless-mpls-07 > http://www.juniper.net/us/en/local/pdf/design-guides/8020013-en.pdf > > URLs provide example how to implement seamless MPLS with using ISIS > between one 'core' and multiple 'aggregation' networks. > > Problem is, this concept does not actually work if you connect >1 > aggregation network to same border router, because border router > belonging to multiple areas would essentially merge the areas and > flood LSPs between them, reducing your scale benefits. > > This is probably not really ISIS standardization issue, rather some > local proprietary hack is needed in border router to isolate the > cross-area LSPs. Or should ISIS on protocol level consider this > use-case? > > Thanks, > -- > ++ytti -- ++ytti
- [Isis-wg] ISIS in multiarea seamless MPLS Saku Ytti
- Re: [Isis-wg] ISIS in multiarea seamless MPLS Saku Ytti
- Re: [Isis-wg] ISIS in multiarea seamless MPLS Hannes Gredler