North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Aggressive route flap dampening
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." ********************************************************
|