Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios

[JORDI PALET MARTINEZ <[e-mail]>]

Several times a day in many places!

Regards,
Jordi
 
 

-----Mensaje original-----
De: v6ops <[e-mail]> en nombre de Fernando Gont <[e-mail]>
Fecha: jueves, 31 de enero de 2019, 13:22
Para: Sander Steffann <[e-mail]>, Mikael Abrahamsson <[e-mail]>
CC: IPv6 Operations <[e-mail]>, "[e-mail]" <[e-mail]>
Asunto: Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios

    On 31/1/19 09:04, Sander Steffann wrote:
    >> "   o  A CPE MUST record, on stable storage, the list of prefixes being
    >>      advertised on each LAN segment."
    >>
    >> This is not always doable as some devices have very small flash with no write-leveling, so doing this generally might ruin the flash cells on some devices. This above requirement will drive cost, especially in the low end market of HGWs.
    > 
    > A flash cell is at least capable of 1000 to 3000 erase/write cycles. Even if the prefix would change every single day that gives a lifetime of 3 to 9 years. And prefixes shouldn't change that often anyway. When looking at more realistic estimates line a change on average once a week you'l get to 20 years. Seems more than enough for low end extra cheap devices. I don't see this driving cost up, except for spending a few hours on properly engineering this.
    
    You don't really know where these boxes are going to be deployed. I know
    of several places where you do experience electric outages several times
    a week.
    
    -- 
    Fernando Gont
    SI6 Networks
    e-mail: [e-mail]
    PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
    
    
    
    
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