I've been fighting with this for a while, and I can't figure this out. I've got wireshark running on my laptop, and I'm noticing a ton of different mac addresses running IPX SAP and RIP. These mac addresses don't exist in the switch. The subnets that are affected are:
I change my mask to be 255.0.0.0 and my system is in the 10.2.0.0 subnet. I scanned all of the subnets using nmap so I can get the mac address back on them. After collecting these, I searched for the mac addresses that I'm getting in wireshark. There's about 50 - 100 different ones, but they all refer to printers (Ricoh, Lexmark, HP, IBM, Oki, etc.) I have wireshark open, search the text file that I created with nmap, and nothing. There's no match between nmap's findings and wireshark's report.
I'm at a total loss as to go about troubleshooting this. BTW, I've checked ALL of my switches ARP table, mac table, and I've checked my core routers mac and arp tables. The addresses don't exist. I don't believe this is attack of any sorts either, just an anomaly that I'm having a hard time pinpointing.
This is good information Giuseppe, but I guess my question is how do I stop them? All of my local printers are configured with IP being the only enabled protocol, and we don't run Novell at all. My concern is that there are a TON of different MACs, and since I can't find them in a switch anywhere, it makes it hard to find where the mac address belongs.
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.