nanog mailing list archives
Re: OOB core router connectivity wish list
From: "Dobbins, Roland" <rdobbins () arbor net>
Date: Sat, 12 Jan 2013 16:39:08 +0000
On Jan 10, 2013, at 9:35 AM, Christopher Morrow wrote:
I don't think roland was really saying that normal netflow from a device in production pushing a few hundred gbps of traffic would be appropriate to ship out the OOB network... or I hope that wasn't his point. I don't think oob networks need to be sized for that.
Actually, that is what I'm saying - and with sampled flow telemetry, this isn't a huge bps issue. With flow telemetry, we're typically looking at 0.5% - 1.5% of the aggregate utilized bandwidth of the exporting device, multiplied by the sampling ratio (e.g., .01, .0001, whatever) - so, they isn't a huge amount of traffic, even for very high-speed network. Modern networks should be designed with OOB/DCN which are sufficiently sized to handle flow telemetry. Exporting it in-band means that one is blind during network partition events, when visibility is key. ----------------------------------------------------------------------- Roland Dobbins <rdobbins () arbor net> // <http://www.arbornetworks.com> Luck is the residue of opportunity and design. -- John Milton
Current thread:
- Re: OOB core router connectivity wish list, (continued)
- Re: OOB core router connectivity wish list Christopher Morrow (Jan 10)
- Re: OOB core router connectivity wish list Mikael Abrahamsson (Jan 10)
- Re: OOB core router connectivity wish list Jared Mauch (Jan 10)
- Re: OOB core router connectivity wish list Michael Thomas (Jan 10)
- Re: OOB core router connectivity wish list Charles N Wyble (Jan 10)
- Re: OOB core router connectivity wish list Saku Ytti (Jan 10)
- Re: OOB core router connectivity wish list Christopher Morrow (Jan 10)
- Re: OOB core router connectivity wish list Jared Mauch (Jan 10)
- Re: OOB core router connectivity wish list Saku Ytti (Jan 10)
- Re: OOB core router connectivity wish list Saku Ytti (Jan 10)
- Re: OOB core router connectivity wish list Dobbins, Roland (Jan 12)
- Re: OOB core router connectivity wish list Jimmy Hess (Jan 12)
- Re: OOB core router connectivity wish list Nick Hilliard (Jan 12)
- Re: OOB core router connectivity wish list Christopher Morrow (Jan 12)
- Re: OOB core router connectivity wish list Matthew Petach (Jan 12)
- Re: OOB core router connectivity wish list Mikael Abrahamsson (Jan 13)
- Re: OOB core router connectivity wish list joel jaeggli (Jan 13)
- RE: OOB core router connectivity wish list Jamie Bowden (Jan 14)
- Re: OOB core router connectivity wish list Nick Hilliard (Jan 13)