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The Graveyard - Products No Longer Supported => Hubs and Switches => DES-1228P => Topic started by: dstern350 on April 07, 2010, 07:33:50 PM

Title: Port Mirroring doesnt work
Post by: dstern350 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?
Title: Re: Port Mirroring doesnt work
Post by: Fatman 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?
Title: Re: Port Mirroring doesnt work
Post by: dstern350 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).
Title: Re: Port Mirroring doesnt work
Post by: toml 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.