Poor mans TAP

Dovid Bender dovid at telecurve.com
Mon Oct 7 17:10:03 UTC 2019


Yup, Tried that. Incoming interface is set as:
interface Ethernet1/37
  switchport mac-learn disable
  description tor-31-1 ge-0/0/44 SPAN
  switchport mode trunk
  switchport trunk allowed vlan 2,999
  ip access-group DROP out

Outbound interfaces are set to:

interface Ethernet1/46
  description MON1
  switchport access vlan 999

The issue is that the traffic coming in, is coming from a Juniper switch
where the traffic has vlan tags on the packets.


On Mon, Oct 7, 2019 at 1:07 PM Nick Hilliard <nick at foobar.org> wrote:

> Dovid Bender wrote on 07/10/2019 17:56:
> > We used cisco in the past. The issue we have is the switches that will
> > mirror to more than one port  have fans pushing the heat into the cold
> > isle. From what I was able to see Cisco does not have any AFO switches
> > that will mirror to more than one port.
>
> um, really?  Have you tried disabling mac learning?  This will cause all
> traffic to be unicast flooded to multiple ports.
>
> Nick
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nanog.org/pipermail/nanog/attachments/20191007/4ccaeb26/attachment.html>


More information about the NANOG mailing list