[CentOS] [OT] Network switches

nate centos at linuxpowered.net
Fri Mar 27 01:22:33 UTC 2009


Scott McClanahan wrote:

> I'll probably rule out anything that doesn't offer at least 48 ports of
> 10/100/1000, ssh, port mirroring or spanning sessions, snmp, unique
> spanning trees per vlan, and something like vrrp.  It would be nice to
> have 802.3ad (I think that's the right one) capability to do some link
> aggregation between the switches as well.
>
> Not really asking for anything in this post but just providing more
> information in case you're interested.  Thanks again.

You may want to check out sflow instead of using something
like port mirroring, with sflow(on sflow-enabled devices) it
samples enough data that you can get almost everything that flows
through the network and can do so at line rate on every port,
so even if your pushing 100Gbit on your switch you don't need
to worry about performance impact, something that wouldn't
be possible with port mirroring or cisco netflow.

http://www.sflow.org/sFlowOverview.pdf

nate



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