DHCPV4

• 1 DHCPv4
  • 1.1 DHCPv4 overview
  • 1.2 DHCP Assist configuration
    • 1.2.1 How DHCP Assist works
    • 1.2.2 Configuring DHCP Assist
  • 1.3 Dynamic ARP Inspection Overview
    • 1.3.1 ARP Poisoning
    • 1.3.2 How Dynamic ARP Inspection Works
      • 1.3.2.1 ARP and DHCP Snoop Entries
    • 1.3.3 Configuration Notes and Feature Limitations for DAI
    • 1.3.4 Configuring Dynamic ARP Inspection
    • 1.3.5 Configuring Dynamic ARP Inspection on Multiple VLANs
    • 1.3.6 Disabling Syslog Messages for DAI
    • 1.3.7 Displaying ARP Information
    • 1.3.8 Configuring DAI to Support Multi-VRF
    • 1.3.9 Enabling Trust on a Port for a Specific VRF
  • 1.4 DHCP Snooping
    • 1.4.1 How DHCP Snooping Works
      • 1.4.1.1 DHCP Snooping Deployment over a LAG
      • 1.4.1.2 DHCP Binding Database
      • 1.4.1.3 Client IP-to-MAC address mappings
    • 1.4.2 System Reboot and the Binding Database
    • 1.4.3 Configuration Notes and Feature Limitations for DHCP Snooping
    • 1.4.4 Configuring DHCP Snooping
    • 1.4.5 Configuring DHCP Snooping on Multiple VLANs
    • 1.4.6 Displaying DHCPv4 Snooping Information
    • 1.4.7 Configuring DHCPv4 Snooping for Multi-VRF
  • 1.5 DHCP Relay Agent Information and Option 82 Insertion
    • 1.5.1 Configuration Notes for DHCP Option 82
    • 1.5.2 DHCP Option 82 Sub-options
      • 1.5.2.1 Sub-option 1: Circuit ID
      • 1.5.2.2 Sub-option 2: Remote ID
      • 1.5.2.3 Sub-option 6: Subscriber ID
    • 1.5.3 DHCP Option 82 Configuration
      • 1.5.3.1 Disabling or Re-enabling DHCP Option 82 Processing on an Interface
      • 1.5.3.2 Disabling DHCP Option 82 Globally and Re-enabling It for an Interface
      • 1.5.3.3 Disabling or Re-enabling DHCP Option 82 Processing on all VLAN Member Ports
      • 1.5.3.4 Changing the DHCP Relay Agent Forwarding Policy
      • 1.5.3.5 Configuring DHCP Snooping Relay Information Sub-options
      • 1.5.3.6 Displaying DHCP Option 82 Information
      • 1.5.3.7 Configuring the Source IP Address of a DHCP Client Packet on the DHCP Relay Agent
  • 1.6 IP Source Guard
    • 1.6.1 Configuration Notes and Feature Limitations for IP Source Guard
    • 1.6.2 Enabling IP Source Guard on a Port or Range of Ports
    • 1.6.4 Defining Static IP Source Bindings
    • 1.6.5 Enabling IP Source Guard for a VLAN
    • 1.6.6 Enabling IP Source Guard for a LAG Port for a VLAN
    • 1.6.7 Enabling IP Source Guard on Multiple VLANs
    • 1.6.8 Binding IP Source Guard ACLs to Ports
    • 1.6.11 Displaying Learned IP Addresses