nanog mailing list archives
Re: NetFlow - path from Routers to Collector
From: "Roland Dobbins" <rdobbins () arbor net>
Date: Wed, 02 Sep 2015 21:02:10 +0700
On 2 Sep 2015, at 20:25, Niels Bakker wrote:
Why? Do your customer packets have cooties?
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.
Which is exactly the argument that people with experience have been making on this mailing list.
I think the problem here is that I failed to distinguish between logical and physical OOB. Physical is best, logical is generally Good Enough.
There are some operators who send flow telemetry across physically distinct OOB infrastructure. More do it logically. Most still do it in-band mixed with production network traffic, but that is slowly changing.
OOB is the 3G dialout on a terminal server that it uses once its regular outside connection fails.
That's one example, yes.
You don't want flow exports there, to give just one counterexample to your earlier assertions.
On that particular category of OOB, of course not. ----------------------------------- Roland Dobbins <rdobbins () arbor net>
Current thread:
- Re: NetFlow - path from Routers to Collector, (continued)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Rod Beck (Sep 01)
- Re: NetFlow - path from Routers to Collector Shane Ronan (Sep 01)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 01)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Niels Bakker (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Jared Mauch (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector jim deleskie (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 01)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 02)
- Re: NetFlow - path from Routers to Collector Roland Dobbins (Sep 02)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 02)
- Re: NetFlow - path from Routers to Collector Mark Tinka (Sep 01)