Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET
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Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

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ip arp inspection validateChapter 2<strong>Catalyst</strong> <strong>3750</strong>-E <strong>and</strong> <strong>3560</strong>-E <strong>Switch</strong> <strong>Cisco</strong> <strong>IOS</strong> Comm<strong>and</strong>sUsage GuidelinesYou must specify at least one of the keywords. Each comm<strong>and</strong> overrides the configuration of theprevious comm<strong>and</strong>; that is, if a comm<strong>and</strong> enables src-mac <strong>and</strong> dst-mac validations, <strong>and</strong> a secondcomm<strong>and</strong> enables IP validation only, the src-mac <strong>and</strong> dst-mac validations are disabled as a result of thesecond comm<strong>and</strong>.The allow-zeros keyword interacts with ARP access control lists (ACLs) in this way:• If you configure an ARP ACL to deny ARP probes, they are dropped even if the allow-zero keywordis specified.• If you configure an ARP ACL that specifically permits ARP probes <strong>and</strong> configure the ip arpinspection validate ip comm<strong>and</strong>, ARP probes are dropped unless you enter the allow-zeroskeyword.The no form of the comm<strong>and</strong> disables only the specified checks. If none of the options are enabled, allchecks are disabled.ExamplesThis example show how to enable source MAC validation:<strong>Switch</strong>(config)# ip arp inspection validate src-macYou can verify your setting by entering the show ip arp inspection vlan vlan-range privileged EXECcomm<strong>and</strong>.Related Comm<strong>and</strong>s Comm<strong>and</strong> Descriptionshow inventory vlanvlan-rangeDisplays the configuration <strong>and</strong> the operating state of dynamic ARPinspection for the specified VLAN.2-224<strong>Catalyst</strong> <strong>3750</strong>-E <strong>and</strong> <strong>3560</strong>-E <strong>Switch</strong> Comm<strong>and</strong> ReferenceOL-9776-08

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