nanog mailing list archives
Re: NetFlow - path from Routers to Collector
From: Jared Mauch <jared () puck Nether net>
Date: Tue, 1 Sep 2015 13:44:06 -0400
I think the key here is that Roland isn't often constrained by these financial considerations. I would respectfully disagree with Roland here and agree with Job, Niels, etc. A few networks have robust out of band networks, but most I've seen have an interesting mixture of things and inband is usually the best method. Those that do have "seperate" networks may actually be CoC services from another deparment in the same company riding the same P/PE devices (sometimes routers). I've seen oob networks on DSL, datacenter wifi or cable swaps through the fence to an adjacent rack. An oob network need not be high bandwidth enough to do netflow sampling, this is well regarded as a waste of money by many as the costs for these can often be orders of magnitude more compared to a pure-IP or internet service. I'll say this ranks up there with people who think MPLS VPN == Encryption. It's not unless you think a few byte label is going to confuse people. - Jared On Tue, Sep 01, 2015 at 01:32:04PM -0400, Shane Ronan wrote:
So in your world, the money always exists for a separate flow telemetry network? On 9/1/15 1:29 PM, Roland Dobbins wrote:On 2 Sep 2015, at 0:18, Niels Bakker wrote:You're just wrong here.Sorry, I'm not. I've seen what happens when flow telemetry is 'squeezed out' by pipe-filling DDoS attacks, interrupted by fat-fingers, etc. It'll happen to you, one day. And then you'll understand. ----------------------------------- Roland Dobbins <rdobbins () arbor net>
-- Jared Mauch | pgp key available via finger from jared () puck nether net clue++; | http://puck.nether.net/~jared/ My statements are only mine.
Current thread:
- Re: NetFlow - path from Routers to Collector, (continued)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Nick Hilliard (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- RE: NetFlow - path from Routers to Collector Chuck Church (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- RE: NetFlow - path from Routers to Collector Frank Bulk (Sep 10)
- RE: NetFlow - path from Routers to Collector White, Andrew (Sep 10)
- Re: NetFlow - path from Routers to Collector Todd K Grand (Sep 10)
- Re: NetFlow - path from Routers to Collector Niels Bakker (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Leo Bicknell (Sep 01)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 01)
- Re: NetFlow - path from Routers to Collector Pierfrancesco Caci (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)