NANOG Digest, Vol 69, Issue 28

Fri Oct 11 18:47:08 UTC 2013

What is SDN at its essence ?

> Message: 9
> Date: Fri, 11 Oct 2013 19:13:57 +0100 (BST)
> From: William Waites <wwaites at tardis.ed.ac.uk>
> To: joelja at bogus.com
> Cc: nanog at nanog.org
> Subject: Re: Policy-based routing is evil? Discuss.
> Message-ID: <20131011.191357.239591912.wwaites at tardis.ed.ac.uk>
> Content-Type: text/plain; charset="us-ascii"
> 
> On Fri, 11 Oct 2013 10:41:46 -0700, joel jaeggli <joelja at bogus.com> said:
> 
>     > you take all the useful information that an IGP could be (or is)
>     > providing you, and then you ignore it and do something else.
> 
> Yes, that's another part of the conversation, encouraging the use of an IGP,
> which has been a source of trouble for them because of broken wireless bridges
> from a very commonly used vendor that randomly eat multicast packets, so it's
> not as straightforward as it should be.
> 
>     > evil is not a synonym for ugly patch placed over a problem that
>     > could be handled better.
> 
> Ok, fair enough. My first experience with PBR was as a summer intern in the
> mid-1990s who inherited management of a large ATM network that had a big
> VPN-esque thing built entirely that way and with no documentation. It certainly
> felt evil at the time. ;)
> 
> -w
> 
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