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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: filtering long prefixes
On Thu, 21 Sep 1995, Sean Doran wrote: > > reject BGP announcements which: > > -- are in the range of 206.0.0.0/8 to 239.0.0.0/8 > with a mask longer than 18 bits > -- has a mask longer than 24 bits > - -- Unfourtunatly the Canadian IP registrar has been handing out addresses in the 206.12.0.0/16 range to anyone applying for a IP address in Canada. Sprint has several Canadian customers Sprint Canada, Cyberstore, and Hookup that are anouncing routes to you in this block. example route: 206.12.112.0/24 descr: TRIN-NET origin: AS3609 advisory: AS690 1:3830(11) 2:3830(147) mnt-by: MAINT-AS3609 changed: [email protected] 950811 source: RADB The following are the addresses of my customers that would be filterd by this policy. None of these people were told that these addresses could only be routed to CA*net. > [206/8 more-specifics] > [ prefix as-path ] > 206.12.202.0/23 3561 5071 > 206.12.206.0 3561 5071 > 206.12.208.0 3561 5071 > 206.12.237.0 3561 5071 > 206.12.238.0/23 3561 5071 > Thanks for the warning. I understand your reasons for this, unfourtunatly the Canadian IP registrar may have been unclear on the concept. John ============================================================= John Bradley | Office Phone (604) 990-2158 WesTel Telecommunications Ltd | Fax (604) 990-2020 Vancouver, BC Canada | Cell (604) 240-8478 [email protected] | Autonomous System 5071
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