mac address spoofing & dhcp snooping

From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed Dec 22 2004 - 20:47:54 GMT-3


Hi guys,

Is it possible to spoof the source mac address of an outgoing frame?

I ask because when dhcp snooping is enabled on a 3550, it checks

to see if the source mac address of the frame is the same as the mac address

inside the dhcp packet.

If the 2 mac addresses are different, the 3550 will drop the packet.

Besides spoofing the source mac address, are there any possible reasons

the source mac address would be different from the mac address contained

inside the packet?

TIA, Tim



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