[183449] in North American Network Operators' Group
Re: NetFlow - path from Routers to Collector
daemon@ATHENA.MIT.EDU (Jared Mauch)
Wed Sep 2 10:08:15 2015
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <5E82EB15-2069-4A1A-834D-B240E836F182@arbor.net>
Date: Wed, 2 Sep 2015 10:08:22 -0400
To: Roland Dobbins <rdobbins@arbor.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> On Sep 2, 2015, at 10:02 AM, Roland Dobbins <rdobbins@arbor.net> =
wrote:
>=20
> On 2 Sep 2015, at 20:25, Niels Bakker wrote:
>=20
>> Why? Do your customer packets have cooties?
>=20
> Because you don't want things which disrupt customer traffic to =
disrupt your ability to see what's happening. Just as you don't want it =
to disrupt your ability to configure/manage your infrastructure.
It=E2=80=99s really because some people who drink the MPLS/VPN/VRF/VLAN =
kook-aid think it=E2=80=99s some magic that undoes fate sharing and =
proper engineering and planning. That a few bytes for a label of VLAN =
tag make your data more secure.
It=E2=80=99s possible to build a network that works without all these =
vendor pushed tricks. I see where Roland is trying to go and he=E2=80=99s=
in the =E2=80=9Cmagic byte=E2=80=9D realm of the extra label makes it =
=E2=80=9COOB=E2=80=9D where as the rest of us just see 1=E2=80=99s and =
0=E2=80=99s on the wire and know a bit is a bit regardless of =
tag-switching (the original name for MPLS) or IEEE 802.1q label. I=E2=80=99=
m sure there are people still doing ISL but i=E2=80=99d rather not.
- Jared=
