Re: Can a regular cisco router prevent APR spoofing?
If you are talking about duplicate address detection, that is not possible on the router. You need to manually confiugre your DHCP server to exclude the router IP address. Also, the router is not capable of doing ARP inspection on the routed ports. It seems to be supported only on switch modules.
The loopback packets are used by the switch to detect any physical loop in the network. If the switch gets the loop packet that it had sent on an interface back on a different interface (or on the same interface), it determines that there is a physical loop and reports it.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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