On 8/19/23 00:22, Matthew Petach wrote:
Hi Mark,
I know it's annoying that I won't mention specifics.
Unfortunately, the last time I mentioned $vendor-specific information
on NANOG, it was picked up by the press, and turned into a
multimillion dollar kerfuffle with me at the center of the c
On Fri, Aug 18, 2023 at 2:36 PM Mark Tinka wrote:
> [...]
> To be fair, you are talking about an arbitrary value of years back, on
> boxes you don't name running code you won't mention.
>
> This really not saying much :-).
>
Hi Mark,
I know it's annoying that I won't mention specifics.
Unfortun
On 8/18/23 22:40, Matthew Petach wrote:
Hi Robert,
Without naming any names, I will note that at some point in the
not-too-distant past, I was part of a new-years-eve-holiday-escalation
to $BACKBONE_ROUTER_PROVIDER when the global network I was involved
with started seeing excessive conve
On 8/18/23 22:20, Jakob Heitz (jheitz) via NANOG wrote:
We support platforms of various capacities.
While we would all like to sell the large ones, people buy the cheap
ones too.
Even a bare bones x86 platform of some sort with at least 8GB of RAM
would make the cheapest routers still,
On 8/18/23 19:38, Jakob Heitz (jheitz) via NANOG wrote:
That's true Robert.
However, communities and med only work with neighbors.
Communities routinely get scrubbed because they cause increased memory
usage and convergence time in routers.
Really?
We only scrub a specific string of co
On 8/18/23 09:38, Robert Raszuk wrote:
Jakob,
With AS-PATH prepend you have no control on the choice of which ASN
should do what action on your advertisements.
My comprehension of DPA would have been more directed than the "spray &
pray" approach AS_PATH prepending provides.
However, t
On 8/18/23 09:38, Robert Raszuk wrote:
Jakob,
With AS-PATH prepend you have no control on the choice of which ASN
should do what action on your advertisements.
My comprehension of DPA would have been more directed than the "spray &
pray" approach AS_PATH prepending provides.
However, t
> it's really about efficiently *parsing and updating* communities--
Absolutely correct.
Inefficient implementations of how communities are used in inbound or
outbound policies can do a lot of harm - no doubt about that - and as you
say some surface in least convenient moments.
But the point I w
Fact remains, operators scrub communities and path-attributes for many reasons.
That's why as-path length is used as a traffic engineering mechanism over
multiple AS hops.
As limited as it is, it's what we have.
Kind Regards,
Jakob
From: Jakob Heitz (jheitz)
Date: Friday, August 18, 2023 at 1:
We support platforms of various capacities.
While we would all like to sell the large ones, people buy the cheap ones too.
Kind Regards,
Jakob
From: Robert Raszuk
Date: Friday, August 18, 2023 at 12:55 PM
To: Jakob Heitz (jheitz)
Cc: nanog@nanog.org
Subject: Re: Destination Preference Attribu
Jakob,
Considering how much various junk is being added to BGP protocol these days
communities are your least worry as far as RAM space and protocol
convergence time would be of any concern. Then you have those new concepts
of limited/trusted domains where blast radius of much higher caliber then
We are indeed doing so. As a symmetric gigabit and above last mile provider
(we have 2.5, 5 and 10 Gbps to the home customers in Manhattan) the very
rare instances where a customer becomes compromised or a malicious traffic
source are worse than the usual.
>From a network topology perspective, and
Perhaps to you Robert.
I work on code and with customer issues that escalate to code.
Kind Regards,
Jakob
From: Robert Raszuk
Date: Friday, August 18, 2023 at 10:59 AM
To: Jakob Heitz (jheitz)
Cc: nanog@nanog.org
Subject: Re: Destination Preference Attribute for BGP
Hi Jakob,
On Fri, Aug 18,
This is an automated weekly mailing describing the state of the Global
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The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
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Hi Jakob,
On Fri, Aug 18, 2023 at 7:41 PM Jakob Heitz (jheitz) via NANOG <
nanog@nanog.org> wrote:
> That's true Robert.
>
> However, communities and med only work with neighbors.
>
> Communities routinely get scrubbed because they cause increased memory
> usage and convergence time in routers.
>
https://thebrotherswisp.com/index.php/geo-and-vpn/
On Thu, Aug 17, 2023 at 4:09 PM Eric Kuhnke wrote:
> I have a large set of residential last mile gigabit customers in the
> NYC/NJ area where the /24 sized blocks for our CPE DHCP pools has just been
> blocked by Hulu. Please contact me off list
That's true Robert.
However, communities and med only work with neighbors.
Communities routinely get scrubbed because they cause increased memory usage
and convergence time in routers.
Even new path attributes get scrubbed, because there have been bugs related to
new ones in the past.
Here is a c
>
> "I need a global tier 3 engineer" with no explanation or reasoning is a
> little off-putting, imo.
TIm, I'm sorry that bothered you - but I was more specific in my first
request.
I can't be more specific because of GDPR regulations, which I am governed
by.
Over and out.
Cheers,
Etienne
On
On 18 Aug 2023, at 08:28, Eric Kuhnke wrote:
Additionally this appears to have a strong correlation with everything that is
hosted by Akamai Edge. Akamai, we are a fairly mundane last mile operator…
It might be a good idea to analyze your outbound traffic in order to determine
if you/your cu
Jakob,
With AS-PATH prepend you have no control on the choice of which ASN should
do what action on your advertisements.
However, the practice of publishing communities by (some) ASNs along with
their remote actions could be treated as an alternative to the DPA
attribute. It could result in remot
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