What is the DHCP snooping bindings file shown here used for by the Cisco Nexus 9000 Series Switch?

Question

Exhibit

Options

• Ato authenticate the users permitted to make the changes to the DHCP snooping feature
• Bto permit the users from the IP addresses listed to make changes to the DCHP configuration
• Cto retain the DHCP server configuration across reboots
• Dto retain the DHCP bindings configuration across reboots

• B
  3% (1)
• C
  3% (1)
• D
  94% (33)

Explanation

The DHCP snooping bindings file (typically stored on bootflash or a remote server) is used to persist the DHCP snooping binding table across device reboots. The binding table maps IP addresses to MAC addresses, VLANs, ports, and lease times for dynamically assigned clients - this information is learned by snooping on DHCP traffic. Without saving this file, all learned bindings would be lost when the switch reloads, potentially causing legitimate traffic to be dropped by Dynamic ARP Inspection (DAI) or IP Source Guard until bindings are re-learned. The file has nothing to do with authenticating administrators, permitting configuration changes, or preserving the DHCP server configuration - it specifically retains the client binding data.

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