On Sun, 1 Oct 2023 at 06:07, Owen DeLong via NANOG wrote:
> Not sure why you think FIB compression is a risk or will be a mess. It’s a
> pretty straightforward task.
Also people falsely assume that the parts they don't know about, are
risk free and simple.
While in reality there are tons of pr
I don't know if this is related or not, but we've been working a strange
issue with a Cloudflare-hosted site for weeks now, where some source IPs
incur a 45-60 second delay on page-loads to a specific web-site, but
other source IPs load instantaneously.
We can't find a common denominator. We'v
On Sat, Sep 30, 2023 at 8:04 PM Owen DeLong via NANOG wrote:
> Not sure why you think FIB compression is a risk or will be a mess. It’s a
> pretty straightforward task.
Hi Owen,
There are multiple levels of FIB compression. The simplest version
merely aggregates adjacent routes with the same ne
On Sun, Oct 1, 2023 at 1:03 AM Saku Ytti wrote:
> On Sun, 1 Oct 2023 at 06:07, Owen DeLong via NANOG
> wrote:
>
> > Not sure why you think FIB compression is a risk or will be a mess. It’s
> a pretty straightforward task.
>
> Also people falsely assume that the parts they don't know about, are
>
Matthew Petach writes:
> I would go a step further; for any system of compression hoping to gain a
> net positive space savings,
> Godel's incompleteness theorem guarantees that there is at least one input
> to the system that will result in no space savings whatsoever.
This is rather the Pigeonh
On Sun, Oct 1, 2023 at 11:25 AM Seth David Schoen
wrote:
> Matthew Petach writes:
>
> > I would go a step further; for any system of compression hoping to gain a
> > net positive space savings,
> > Godel's incompleteness theorem guarantees that there is at least one
> input
> > to the system that
This year's test of the U.S. national emergency alert includes something
for ISPs and network operators.
The wireless portion of the national test is scheduled 2 minutes (2:18pm
EDT or 1818 UTC) before the main broadcast test at 2:20. Mobile phones
usually receive the alert about a minute
Among the issues:
Suppose the FIB has all the /24 components to make a /20, so it programs a /20.
Then one of the /24's changes nexthop. It now has to undo all that compression
by reinstalling some of the routes and figuring out the minimum set of /21,
/22, /23, /24
to make it happen. Then to avoi
On Sun, Oct 1, 2023 at 5:40 PM Jakob Heitz (jheitz) via NANOG
wrote:
> Among the issues:
> Suppose the FIB has all the /24 components to make a /20, so it programs a
> /20.
> Then one of the /24's changes nexthop. It now has to undo all that compression
Yeah... all this stuff is on the same leve
While I did allude to some of the complexity, my main point
is that FIB compression does not allow you to install a FIB with less memory.
Because you must be prepared for transients during which the FIB needs to store
mostly uncompressed anyway.
All it does is to increase convergence time.
Kind Re
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