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Author Topic: Port Mirroring doesnt work  (Read 19870 times)

dstern350

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Port Mirroring doesnt work
« on: April 07, 2010, 07:33:50 PM »
I have my Internet router plugged into port 23. I have a linux machine with a sniffer plugged into port 21. I have port 23 configured to mirror TX/RX to port 21. I am not seeing the expected traffic. All ports are on Vlan1 (default).

Any ideas?
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Fatman

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Re: Port Mirroring doesnt work
« Reply #1 on: April 08, 2010, 08:57:52 AM »
Which port is the target which port is the source and are you using TX, RX, or both?
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non progredi est regredi

dstern350

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Re: Port Mirroring doesnt work
« Reply #2 on: April 08, 2010, 09:10:05 AM »
Port 23 is the source, port 21 is the dest, and TX and RX and set (both).
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toml

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Re: Port Mirroring doesnt work
« Reply #3 on: June 03, 2010, 03:01:49 PM »
Wondering if you ever got this resolved.  I am having the same problem.  Port mirroring is set up correctly.  If I go to "Power Saving" and hit the "apply" button, whether or not not power saving has already been enabled, port mirroring works for 21 seconds (21 pings) - then stops.  if I hit the apply button again - mirroring works for another 21 seconds.  Doesn't matter if power saving is on or off.

Mirroring was working fine for about a week after I got the box - then it started to exhibit the above behavior.  Big hassle to send it back.
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