Netgear XSM4324S Software Administration Manual Software Version 12.x - Page 346
CLI: Con Dynamic ARP Inspection, View the DHCP Snooping Binding table.
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M4300 Series and M4300-96X Fully Managed Switches CLI: Configure Dynamic ARP Inspection 1. Enable DHCP snooping globally. (Netgear Switch) (Config)# ip dhcp snooping 2. Enable DHCP snooping in a VLAN. (Netgear Switch) (Config)# ip dhcp snooping vlan 1 3. Configure the port through which the DHCP server is reached as trusted. (Netgear Switch) (Config)# interface 1/0/1 (Netgear Switch) (Interface 1/0/1)# ip dhcp snooping trust 4. View the DHCP Snooping Binding table. (Netgear Switch) #show ip dhcp snooping binding Total number of bindings: 1 MAC Address IP Address VLAN Interface Type Lease (Secs) 00:16:76:A7:88:CC 192.168.10.86 1 1/0/2 DYNAMIC 86400 5. Enable ARP inspection in VLAN 1. (Netgear Switch) (Config)# ip arp inspection vlan 1 Now all ARP packets received on ports that are members of the VLAN are copied to the CPU for ARP inspection. If there are trusted ports, you can configure them as trusted in the next step. ARP packets received on trusted ports are not copied to the CPU. 6. Configure port 1/0/1 as trusted. (Netgear Switch) (Config)# interface 1/0/1 (Netgear Switch) (Interface 1/0/1)# ip arp inspection trust Now, ARP packets from the DHCP client go through because a DHCP snooping entry exists. However, ARP packets from the static client are dropped. For information about how to prevent ARP packets from static clients to be dropped, see Static Mapping on page 350. Security Management 346 Software Administration Manual
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