viii
Configuring unresolvable IP attack protection ·········································································································· 326
Configuring ARP source suppression ················································································································ 327
Configuring ARP blackhole routing ··················································································································· 327
Displaying and maintaining unresolvable IP attack protection ······································································ 328
Configuration example ······································································································································· 328
Configuring ARP packet rate limit ······························································································································ 329
Configuration guidelines ···································································································································· 329
Configuration procedure ···································································································································· 329
Configuring source MAC-based ARP attack detection ···························································································· 330
Configuration procedure ···································································································································· 330
Displaying and maintaining source MAC-based ARP attack detection ························································· 331
Configuration example ······································································································································· 331
Configuring ARP packet source MAC consistency check ························································································ 332
Configuring ARP active acknowledgement ··············································································································· 332
Configuring authorized ARP ······································································································································· 333
Configuration procedure ···································································································································· 333
Configuration example (on a DHCP server) ····································································································· 333
Configuration example (on a DHCP relay agent) ···························································································· 334
Configuring ARP detection ·········································································································································· 336
Configuring user validity check ························································································································· 336
Configuring ARP packet validity check ············································································································· 337
Configuring ARP restricted forwarding ············································································································· 338
Displaying and maintaining ARP detection ······································································································ 338
User validity check and ARP packet validity check configuration example ·················································· 339
Configuring ARP scanning and fixed ARP ················································································································ 340
Configuration restrictions and guidelines ········································································································· 340
Configuration procedure ···································································································································· 341
Configuring ARP gateway protection ························································································································ 341
Configuration guidelines ···································································································································· 341
Configuration procedure ···································································································································· 341
Configuration example ······································································································································· 342
Configuring ARP filtering ············································································································································· 342
Configuration guidelines ···································································································································· 343
Configuration procedure ···································································································································· 343
Configuration example ······································································································································· 343
Configuring MFF ····················································································································································· 345
Overview ······································································································································································· 345
Basic concepts ····················································································································································· 346
MFF operation modes ········································································································································· 347
MFF working mechanism ···································································································································· 347
Protocols and standards ····································································································································· 347
Configuring MFF ·························································································································································· 347
Enabling MFF ······················································································································································· 347
Configuring a network port ································································································································ 348
Enabling periodic gateway probe ···················································································································· 348
Specifying the IP addresses of servers ·············································································································· 348
Displaying and maintaining MFF ······························································································································· 349
MFF configuration examples ······································································································································· 349
Manual-mode MFF configuration example in a tree network ········································································· 349
Manual-mode MFF configuration example in a ring network ········································································ 351
Configuring uRPF ····················································································································································· 353
Overview ······································································································································································· 353
uRPF check modes ··············································································································································· 353
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