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тАО10-14-2002 06:28 AM
тАО10-14-2002 06:28 AM
problems with a HP4108 GL switch
I have some problems with one of my HP4108 switch. It seems that it work as a hub !!! unicats traffic that i'm not the destination are sending to my network card !
I don't understand.
Can you help me ? is it possible to turn a HP4108 switch into a hub operating mode ?
I have the last firmware.
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тАО10-14-2002 12:44 PM
тАО10-14-2002 12:44 PM
Re: problems with a HP4108 GL switch
Some switches let you statically assign a MAC to a port. The MAC stays assigned to the port after the PC has been removed. Could be you are seeing something like that but the extra traffic would be limited to only certain MACs.
If it thought your port were a trunk it might try to send all kinds of stuff to you.
Finally and most likely, if the switch receives a message for a MAC address and it doesn't know where the MAC is I presume it would act like a bridge and flood the message out every port to see if it would get a response. This could happen if the MAC table on the switch expires before the ARP table on a PC or router or if a static ARP table entry has been added to the arp table of a pc or router. Assuming something responds to the flood you shouldn't see any more traffic to that MAC until the table expires again.
What are you using to monitor the traffic with? Can you move to a different port to see if it has any effect?
Ron
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тАО11-06-2002 01:41 AM
тАО11-06-2002 01:41 AM
Re: problems with a HP4108 GL switch
I'm experiencing the same problem with a 4108gl.
I have heard some ports of the switch with Sniffer Pro (NAI) and it happens in all the ports. The monitoring port is disabled.
Have you found a solution to the problem?
Thank you.
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тАО11-19-2002 05:53 AM
тАО11-19-2002 05:53 AM
Re: problems with a HP4108 GL switch
Turning a switch to "hub mode" is not possible at all.
Is the device flooding all unicast traffic, or is this a question of some specific application, is all this traffic directed to same destination?
Arimo
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тАО12-05-2002 01:34 PM
тАО12-05-2002 01:34 PM
Re: problems with a HP4108 GL switch
I had the same problem (unicast flood)
on my Procurve 4000M switch.
After months of battling, i found that
changing the MAC-AGE time on the switch
from the default setting of 5mins to 30mins
solved the problem.
If you havent solved it, try that and
it should stop the unicast flood.
Romeo
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тАО02-13-2003 04:26 AM
тАО02-13-2003 04:26 AM