Hi,
.-- My secret spy satellite informs me that at Fri, 20 Feb 2009, Giuliano
Peritore wrote:
> I think that the case of AS47868 is the same, because I seed the
> modulo was involved too.
For those interested, I made an overview of longest AS paths observed per day,
starting with Febru
--Original Message-
> > From: Mikael Abrahamsson [mailto:swm...@swm.pp.se]
> > Sent: Friday, February 20, 2009 3:06 PM
> > To: nanog@nanog.org
> > Subject: Re: Lots of prepends - AS20912 case
> >
> > On Fri, 20 Feb 2009, Dorn Hetzel wrote:
> >
>
pletely different story; it's used
to do proxy prepending for your customers.
Ivan Pepelnjak
http://blog.ioshints.info
> -Original Message-
> From: Mikael Abrahamsson [mailto:swm...@swm.pp.se]
> Sent: Friday, February 20, 2009 3:06 PM
> To: nanog@nanog.org
> Subject:
It's just a personal opinion, but I would think that if someone is going to
make the rest of the net suffer the ugliness of a n n n n
n n n n n n n n prepend, then it's not
unreasonable they should have to look at the ugliness in their config file
as
On Fri, 20 Feb 2009, Mikael Abrahamsson wrote:
On Fri, 20 Feb 2009, Dorn Hetzel wrote:
Replacing what is conventially thought to be a string with an integer
multiplier seems a massive violation of the principle of least
astonishment.
3. Prepend number of times entered modulo 256, is just br
On Fri, 20 Feb 2009, Dorn Hetzel wrote:
Replacing what is conventially thought to be a string with an integer
multiplier seems a massive violation of the principle of least astonishment.
On a Cisco running 12.0S:
route-map test1
set as-path prepend last-as ?
<1-10> number of last-AS prepen
Replacing what is conventially thought to be a string with an integer
multiplier seems a massive violation of the principle of least astonishment.
On Fri, Feb 20, 2009 at 8:00 AM, Jon Lewis wrote:
> On Fri, 20 Feb 2009, Giuliano Peritore wrote:
>
>The problem is that differently to Cisco
On Fri, 20 Feb 2009, Giuliano Peritore wrote:
The problem is that differently to Cisco the syntax of the prepend
field on thius system is not a string (eg. "20912 20912 20912") but an
integer, that the user interface _should_ limit to the interval 0-16.
...
The producer has been
Hi all,
I can only cofnirm that AS47868 is using also Mikrotik as their border
BGP router
Tomas
Giuliano Peritore wrote:
The long (176) AS20912 prepend incident was due to a
misconfiguration of a BGP router we were testing.
The problem is that differently to Cisco the sy
> The only ill effect is if set it too low we tested it a bit
> at 20-30 AS path length range figuring we shouldn't see *much*
> and it was staggering over time. The unfortunate thing more
> related to your question is that we found some AS's that were
> prepending 40-50 times to ALL their ups
max-as set too low we had no routing to them at all!
We've had it set to 100 for quite a while now and no side effects
Paul
-Original Message-
From: Seth Mattinen [mailto:se...@rollernet.us]
Sent: Thursday, February 19, 2009 4:50 PM
To: nanog@nanog.org
Subject: Re: lots of
upstreams so with
max-as set too low we had no routing to them at all!
We've had it set to 100 for quite a while now and no side effects
Paul
-Original Message-
From: Seth Mattinen [mailto:se...@rollernet.us]
Sent: Thursday, February 19, 2009 4:50 PM
To: nanog@nanog.org
Subje
Mikael Abrahamsson wrote:
>
> Today 85.119.176.0/21 was announced by AS20912 with 177 prepends. I
> noticed 20912 modulo 256 is 176. AS47868 modulo 256 is 252 which matches
> this mondays prepend-incident.
>
> So, what router OS will put 20912 into a byte and thus end up with 176
> in something l
Just seen that here too:
Feb 19 16:20:35: %BGP-6-ASPATH: Long AS path 8001 8928 20912 20912 20912
20912 20912 20912 20912 20912 20912 20912 20912 20912 20912 20912 20912
20912 20912 20912 20912 20912 20912 20912 20912 20912 20912 20912 20912
20912 20912 20912 20912 20912 20912 20912 20912 20912 20
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