[183419] in North American Network Operators' Group
Re: NetFlow - path from Routers to Collector
daemon@ATHENA.MIT.EDU (Jared Mauch)
Tue Sep 1 19:02:23 2015
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <E238936F-4EE1-4377-A479-525C6156C4EE@arbor.net>
Date: Tue, 1 Sep 2015 18:57:52 -0400
To: Roland Dobbins <rdobbins@arbor.net>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On Sep 1, 2015, at 6:39 PM, Roland Dobbins <rdobbins@arbor.net> wrote:
>=20
> On 2 Sep 2015, at 3:45, Chuck Church wrote:
>=20
>> Most OOB is lacking redundancy too, so a single failure can really =
take the shine off an OOB deployment.
>=20
> Even if you're using old, grandfathered equipment for it, there's no =
reason why your OOB/DCN can't have a reasonable degree of redundancy. =
Since, it's like, *what you use to control your entire network*.
Most networks use inband to manage them.
> Underinvesting in management capabilities and capacities has always =
been a problem, of course. Some organizations just won't learn until =
they've gone through a disaster or three.
Yes. let me know when the vendors catch up in this area. I often see =
people say to create a new network as job security vs making the inband =
network survive attacks or be provisioned properly.
Most people I=E2=80=99ve seen have little data or insight into their =
networks, or don=E2=80=99t have the level that they would desire as =
tools are expensive or impossible to justify due to capital costs. =
Tossing in a recurring opex cost of DC XC fee + transport + XC fee + =
redundant aggregation often doesn=E2=80=99t have the ROI you infer here. =
I=E2=80=99ve put together some models in this area. It seems to me the =
DC/real estate companies involved could make a lot (more) money by =
offering an OOB service that is 10Mb/s flat-rate for the same as an XC =
fee and compete with their customers.
Things continue to be a challenge as less equipment works with a serial =
console and the expectation of developers of these embedded solutions =
don=E2=80=99t take into account low bitrate connections that are often =
used in last-resort situations.
We have a well oiled set of processes and checklists to monitor and test =
our management network. Patrick Gilmore has personally mocked me =
because of its method and technique, but the reality is it works.
- Jared
