[Isis-wg] ISIS in multiarea seamless MPLS
Saku Ytti <saku@ytti.fi> Wed, 20 August 2014 20:56 UTC
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Date: Wed, 20 Aug 2014 23:56:10 +0300
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From: Saku Ytti <saku@ytti.fi>
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Subject: [Isis-wg] ISIS in multiarea seamless MPLS
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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
- [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