Wireshark-users: [Wireshark-users] Unknown OUI's...
From: "Phillip Nelson" <[email protected]>
Date: Mon, 9 Nov 2009 10:14:16 -0500
I just experienced a Vlan saturation event where the following source and destination MAC address were in all the packets causing the saturation. Does anyone recognize the OUI's of these two addresses? I have tried to look them up and can't find them anywhere.
The network has a 6509 for its core and 30 switches connected by fiber. Of the 30 switches, 11 are 4003's. Of the 4003's, 5 were affected by the storm and only two were participating in the storm. The trace was taken from the Cisco 6509 and the two participating Cisco 4003's. The broadcast storm was exactly the same between the two switches. We have ruled out all devices connected to the switches. We cannot find the MAC addresses anywhere on the network. We stopped the storm by resetting all the ports on the two 4003's.
Heidelbe_ab:99:6f        Crestron_eb:ac:cf             0x883d              Ethernet II
Phil Nelson
Arrow ECS
Infrastructure Engineer, Senior
28600 Fountain Pkwy
Solon, Ohio 44139
f- 440-498-5178