Best Linux (or BSD) hosted BGP?

Thu May 11 14:38:19 UTC 2023

I use bird2 with Debian11 sometimes, I'm curious, what is the usual
hardware for using Linux as a router? In addition, the Linux ip rule seems
to have a problem with the matching of the ipv4 source address. . .
*Brandon Zhi*
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On Thu, 11 May 2023 at 13:29, Blake Dunlap <ikiris at gmail.com> wrote:

> I'm confused here, are you intentionally running larger MTU interfaces
> than the packet filter can handle with default config, and not wanting to
> change the tunable to fix the config for buffer size for the packet filter,
> or am I misreading?
>
> On Wed, May 10, 2023 at 11:51 PM Mark Tinka <mark at tinka.africa> wrote:
>
>>
>>
>> On 5/10/23 15:55, Tom Beecher wrote:
>>
>> >  That could just as easily happen today. Every OS release has all
>> > kinds of changes to defaults, and frequently don't get caught until
>> > they break something. Even if today's FreeBSD defaults worked for this
>> > scenario, the next release could change to a value that doesn't.
>>
>> We implement a lot of user-defined changes to FreeBSD defaults via
>> "/etc/sysctl.conf", as an example, whose unexpected change would not
>> necessarily break anything as they would reduce scaled performance. We
>> can live with that, because we can afford a reduction in performance
>> until the fault is found, not an outright outage.
>>
>> The problem with doing this with something like a routing protocol - and
>> in this specific case with FRR on FreeBSD for IS-IS - is that it would
>> not be a reduction in performance if an unexpected change were to find
>> its way into future revisions of FreeBSD... it would, in all likelihood,
>> be a complete outage. That is a steeper price to pay, for us anyway.
>>
>> It's just about weighing the risks for one's particular operating
>> environment, and for us, that risk is too high for a routing protocol.
>>
>> Mark.
>>
>
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