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тАО06-06-2007 08:56 AM
тАО06-06-2007 08:56 AM
4200vl monitoring port and VLAN tags
While monitoring his uplink which has four vlans worth of tagged traffic, the mirror port is passing these tags as expected.
We have tried to put the mirror port in a single vlan untagged, but this subnet's packets are all that end up sniffed by ARPwatch.
Is there any way to get the ProCurve to strip tags on the way out of the mirror port? For that matter, is there any way to copy this traffic without the vlan tags?
Any help always appreciated.
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тАО06-06-2007 09:17 AM
тАО06-06-2007 09:17 AM
Re: 4200vl monitoring port and VLAN tags
I'm just wondering, instead of monitoring that tagged only port, can you monitor 4 ports that are untagged in each one of those VLANs? Since the ARP traffic is mostly broadcast this might be a solution that could work (but I have seen instances where it will actually add an 802.1q tag even when monitoring untagged ports).
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тАО06-07-2007 12:59 AM
тАО06-07-2007 12:59 AM
Re: 4200vl monitoring port and VLAN tags
Thanks a bunch.
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тАО06-22-2007 03:51 AM
тАО06-22-2007 03:51 AM
Re: 4200vl monitoring port and VLAN tags
This makes running standard analysis tools on a packet trace quite complicated. Putting the mirror port in the same VLAN as the port that is being monitored does not make a difference.
Does anyone know how to make the switch stop making up VLAN tags for monitored traffic?
Regards, Paul Boven.
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тАО06-22-2007 01:23 PM
тАО06-22-2007 01:23 PM
Re: 4200vl monitoring port and VLAN tags
Can you try a K.11.xx version and see if this still occurs?
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тАО06-24-2007 08:09 PM
тАО06-24-2007 08:09 PM
Re: 4200vl monitoring port and VLAN tags
Back when my 5412zl still had K11.33 on it, it also put the VLAN tags on half the packets (see above).
Regards, Paul Boven.