Configuring Dhcp; About Dhcp Snooping - Cisco Nexus 9000 Series Configuration Manual

Configuring DHCP

This chapter describes how to configure the Dynamic Host Configuration Protocol (DHCP) on a Cisco NX-OS
device.
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About DHCP Snooping

DHCP snooping acts like a firewall between untrusted hosts and trusted DHCP servers. DHCP snooping
performs the following activities:
• Validates DHCP messages received from untrusted sources and filters out invalid messages.
About DHCP Snooping, on page 327
About the DHCP Relay Agent, on page 331
About the DHCPv6 Relay Agent, on page 334
About DHCP Client, on page 334
Licensing Requirements for DHCP, on page 335
Prerequisites for DHCP, on page 335
Guidelines and Limitations for DHCP, on page 335
Default Settings for DHCP, on page 336
Configuring DHCP, on page 337
Configuring DHCPv6, on page 356
Enabling DHCP Client, on page 362
Verifying the DHCP Configuration, on page 364
Displaying IPv6 RA Guard Statistics, on page 364
Displaying DHCP Snooping Bindings, on page 364
Clearing the DHCP Snooping Binding Database, on page 365
Monitoring DHCP, on page 365
Clearing DHCP Snooping Statistics, on page 365
Clearing DHCP Relay Statistics, on page 365
Clearing DHCPv6 Relay Statistics, on page 365
Configuration Examples for DHCP, on page 366
Configuration Examples for DHCP Client, on page 366
Additional References for DHCP, on page 367
Cisco Nexus 9000 Series NX-OS Security Configuration Guide, Release 9.x
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