ARP not renewed at switch port

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Jun 3rd, 2008
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I have some printers that when show problem and we have to replace, the MAC-to-IP mapping remains at core and even when deleting manually it doens't work. If we use a different IP address at same network it works perfectly. After a lot of time (believe about 4 hours that is the time those informations are holded at core) it works normally but never at first moment.

My Equipments: Core: 6506 and Edge: 4509.

Equipment that shows problem: Barcode Printer Toshiba SX5T-7S12-QQ.



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ralphcarter Tue, 06/03/2008 - 15:01
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It seems like what your talking about is that you cannot connect to the printer right away but after you do then its fine for a while?

What I would try is manually setting the static mac-address entry for the printer. Go to the switch that directly connects the printer and set the static mac-address entry and map it to the port.

# mac-address-table static mac interface vlan id

Try it, see if it helps

luiz.alexandre.... Wed, 06/04/2008 - 03:50
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What happnes is that when for some reason the printer is replaced for an exactly same model, even if I clear the MAC from Core switches it doesn't reply or remap the new MAC for the same IP address used. If I use a new address it works perfectly. If I wait some hours (4 to refresh the CAM at Core) it works.

the problem is that printer are mapped at application and changing IP address isn't an easy action.




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