North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: IP Filtering / CIDR Block Size / SprintLink
On Mon, 27 Jan 1997, James D. Butt wrote: > > > Who, in addition to SprintLink, is currently implementing IP > > filtering based on CIDR block size (/19)? And where can I go > > to learn more about this issue? > > I beleive AGIS has filters now. You can get the specifics off www.agis.net > and click on Network Engineering and read the Nanog presentation info. > > The best place to go is the nanog archives...for more information about > other providers... Hmm, there is amazing - I understood 2 cases only - - there is FILTERING in INTERNET, - there is NOT FILTERING in INTERNET. It's not big difference for us if there is 1 or 10 big ISP who make filtering. But - all you know this filtering have 2 sides. First, it decreases routing noice in the network. But, 2'th, it prevent address space saving. It seems (reading your mail) /19 filtering is too raugph for the INTERNET. It seems it's nessesary to have some filtering to prevent extra grouth of the routing tables. Ok, why nobody discuss /20 or /21 filtering _everywhere_? I must repeat - it's not important for the small ISP and small enterprises how many ISP over the world produce filtering - it's important if the filtering exist somewhere or not. Aleksei Roudnev, Network Operations Center, Relcom, Moscow (+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 239-10-10, N 13729 (pager) (+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax) - - - - - - - - - - - - - - - - -
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