nanog mailing list archives

Re: Weekly Routing Table Report


From: Philip Smith <pfsinoz () gmail com>
Date: Sat, 4 Feb 2017 18:06:27 +1000

Hello Brough,

Very well spotted!! :-)

I finally fixed a problem in my analysis programme which was miscounting
the extended range of 32-bit ASNs (those from 65536 and above). It
wasn't counting them at all in fact, something spotted by one of our
industry colleagues a couple of months back. So the jump is caused by that.

Misery for me now is I have to go back through a few years of daily
reports and figure out when I made the change to cause the breakage. And
rerun everything (sigh).

The other bonus of the fix is that I'm dealing with 32-bit ASNs properly
now - I'm catching the 65536 to 131071 range as bogons, and also
catching any origin ASNs from above 458752 as bogons too.

Thanks!

philip
--

Brough Turner wrote on 4/2/17 05:35 :
On Fri, Feb 3, 2017 at 1:02 PM, Routing Analysis Role Account <
cscora () apnic net> wrote:

Transit ASes present in the Internet Routing Table:                7547


Last week there were 6561.
I've seen the number jump a few or a dozen in one week, but nearly 1000 in
one week??
What am I missing?

Thanks,
Brough

Brough Turner
netBlazr Inc. – Free your Broadband!
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