I have a Cisco switch configured to only allow one MAC address per port. I recently added several new identical Dell systems to the switch, each with an internal Broadcom NIC.
When the Dells are doing large file transfers over the network, their switch ports keep getting "err-disabled" due to showing multiple MAC addresses: the actual MAC and then random junk addresses usually beginning with several zeroes. Any idea why this is happening?
Seems like the bug was related to some CRC issues and 3550 switch reading wrong MAC address on the wire. Can you check the interfaces to see if there are any CRC errors on the interface? Also, if you have not done so already, can you verify and if needed update the drivers on the broadcom NICs? Also, please don't forget to set the speed/duplex to auto on both switch and the PC side.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.