nanog mailing list archives
Re: filtering /48 is going to be necessary
From: Bernhard Schmidt <berni () birkenwald de>
Date: Fri, 09 Mar 2012 21:50:45 +0100
On 09.03.2012 20:31, Owen DeLong wrote: Hi,
Let us not forget that there is also the issue of PA /48s being advertised (quasi-legitimately) for some end-user organizations that are multi-homed but choose not to get PI space. It is not uncommon to obtain a PA /48 from provider A and also advertise it from Provider B.
While I agree it's not uncommon, I'm not a big fan of this setup. Also, provider A should still have his aggregate announced, which would allow strictly filtering ISPs to reach the destination anyway.
Announcing /48s from a PA block without the covering aggregate calls for trouble.
Bernhard
Current thread:
- filtering /48 is going to be necessary Jeff Wheeler (Mar 09)
- Re: filtering /48 is going to be necessary Jeroen Massar (Mar 09)
- Re: filtering /48 is going to be necessary William Herrin (Mar 09)
- Re: filtering /48 is going to be necessary Bernhard Schmidt (Mar 09)
- Re: filtering /48 is going to be necessary PC (Mar 09)
- Re: filtering /48 is going to be necessary Bernhard Schmidt (Mar 09)
- Re: filtering /48 is going to be necessary Owen DeLong (Mar 09)
- Re: filtering /48 is going to be necessary Bernhard Schmidt (Mar 09)
- Re: filtering /48 is going to be necessary Owen DeLong (Mar 09)
- RE: filtering /48 is going to be necessary George Bonser (Mar 09)
- Re: filtering /48 is going to be necessary Owen DeLong (Mar 09)
- RE: filtering /48 is going to be necessary George Bonser (Mar 09)
- RE: filtering /48 is going to be necessary George Bonser (Mar 09)
- Re: filtering /48 is going to be necessary Owen DeLong (Mar 10)
- Re: filtering /48 is going to be necessary PC (Mar 09)
- Re: filtering /48 is going to be necessary Jimmy Hess (Mar 09)
- Re: filtering /48 is going to be necessary Sander Steffann (Mar 09)
- Re: filtering /48 is going to be necessary Jimmy Hess (Mar 09)
- Re: filtering /48 is going to be necessary George Herbert (Mar 09)