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cisc0.ameer
Beginner

ip source guard

hello

in configuration ip source guard 

need enable DHCP snooping

but i saw extend access-list to permit specific host to any destination 

 

SW--FA0/1-----------------------ROUTER(10.10.10.10)

SW#ip access-list ext RACL1

per ip host 10.10.10.10 any

 

what is reason for using access-list here?

 

 

thanks

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