nanog mailing list archives
Re: Longest prepend( 255 times) as path found
From: Lincoln Dale <ltd () interlink com au>
Date: Fri, 26 Aug 2022 18:10:47 -0700
If I was running an edge device with a limited FIB, perhaps I might drop it to save memory. If I had beefier devices, perhaps I would just depref it.
Note that if said prefix either existed elsewhere with fewer prepends that meant it 'won' bgp best-path selection, then it would not result in any difference in the FIB. The FIB is where the 'winning' prefixes go as fully-resolved things from the RIB, but the RIB too would not have it, as an alternative won in BGP. And even if you depref'd it in BGP, it would still be there in the control-plane, consuming the same amount of RAM. Reject it for excess prepends is likely the best choice.
Current thread:
- Longest prepend( 255 times) as path found anonymous (Aug 25)
- Re: Longest prepend( 255 times) as path found Alistair Mackenzie (Aug 25)
- Re: Longest prepend( 255 times) as path found Chriztoffer (Aug 25)
- Re: Longest prepend( 255 times) as path found Alejandro Acosta (Aug 25)
- Re: [External] Re: Longest prepend( 255 times) as path found Hunter Fuller via NANOG (Aug 25)
- Re: Longest prepend( 255 times) as path found Tom Beecher (Aug 25)
- Re: Longest prepend( 255 times) as path found Jeff Tantsura (Aug 25)
- Re: Longest prepend( 255 times) as path found Lincoln Dale (Aug 26)
- Re: Longest prepend( 255 times) as path found Tom Beecher (Aug 27)
- Re: Longest prepend( 255 times) as path found William Herrin (Aug 26)
- Re: Longest prepend( 255 times) as path found Mike Leber via NANOG (Aug 28)
- Re: Longest prepend( 255 times) as path found Alistair Mackenzie (Aug 25)