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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Aggressive route flap dampening
Michael, I believe the primary purpose of the /19 filtering was to reduce the size of the route table. The increased stability this caused was just a happy side affect. > > Can aggressive route flap dampening replace the need for /19 prefix filtering? > For instance, could the old Class C space be filtered on the /24 boundary > if this sort of flap dampening was put in place? Here is Paul Ferguson's > comments from the pagan mailing list: > > >Again, I mention the fact that aggressive route-flap dampening > >could be used in the place of prefix length traffic filters, but > >someone/something needs to educate the latter group to implement > >a less draconian method of protecting themselves from misbehaving > >announcements. If I am not remiss, the predominate reasoning for > >filtering on /19's and longer was an assumption that smaller > >announcements were responsible for the majority of the routing > >instability, and that simply blocking these announcements at > >an arbitrary prefix length would be the simplest way to 'fix' > >the problem. This may be true, but an alternate method of > >approach for this problem could solve all of this squabbling > >once and for all, at least in regard to this issue. > > ******************************************************** > Michael Dillon voice: +1-415-482-2840 > Senior Systems Architect fax: +1-415-482-2844 > PRIORI NETWORKS, INC. http://www.priori.net > > "The People You Know. The People You Trust." > ******************************************************** > > -- Rusty --------------------------------------------------------------------- | MCI Communications [email protected] | | Internet MCI note the Reply-to | | PGP Key: DB183CA5 | ---------------------| http://infopage.mci.net |---------------------
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