 The Dynamic Host Configuration Protocol (DHCP) is a technology used for centralized management and configuration of user IP addresses.  Following the RFC 2131 standard, DHCP operates in a client/server communication model, where DHCP clients send requests to DHCP servers.

DHCP Server Configuration

 Since DHCP uses broadcasting to send request messages during the IP address dynamic allocation process, it is suitable only for cases where the DHCP client and server are within the same subnet.  When the DHCP server and client are not in the same subnet, the DHCP relay mechanism needs to be employed.

DHCP  Relay Configuration

 DHCP Snooping monitors DHCP-REQUEST and trusted port received DHCP-ACK messages, recording DHCP Snooping entries including client MAC addresses, assigned IP addresses, VLANs, and other information.  When DHCP Snooping is enabled, devices forward DHCP client's DHCP request messages through trusted ports to legitimate DHCP servers, and the device generates Snooping Binding Table (SNP) entries based on the DHCP ACK response from the server.

DHCP Snooping Configuration

 The ND Snooping (Neighbor Discovery Snooping) feature is designed for Layer 2 switching environments and serves a similar purpose to DHCP Snooping in IPv6 networks.  It records information such as the source IPv6 address, source MAC address, and incoming port of packets.

ND Snooping Configuration

L2PT Configuration

IP Service Configuration

delete-span-style

Enterprise & Campus Network

Preface

Applicable Hardware Models

Basic Configuration

Ethernet Interface Configuration

VLAN Configuration

MAC Address Table Configuration

QinQ Configuration

MSTP Configuration

Ethernet Link Aggregation Configuration

Ethernet Switching Configuration

Policy Route Configuration

IGMP Snooping Configuration

MLD Snooping Configuration

Multicast VLAN Configuration

IGMPv3 Configuration

Querier Configuration

IP Multicast Configuration

ACL Configuration

ARP Attack Detection Configuration

IPSG Configuration

SAVI Configuration

RA Guard Configuration

Security Configuration

QoS Configuration

Traffic Mirroring Configuration

SNMP Configuration

Network Management and Monitoring Configuration

AAA Configuration

Configuration Guide

Device Management

Interface Management

MAC Configuration

Interface Isolation Group Configuration

LLDP Configuration

Link Aggregation Configuration

STP Configuration

Loopback Detection Configuration

Ethernet Switching

IPv4 Configuration

ARP Configuration

DHCP Relay Configuration

IPv6 Configuration

IP Service

IP Multicast

Reliability Configuration

ARP Detection Configuration

IPv6 RA Guard Configuration

User Binding Rule Configuration

Traffic Suppression And Storm Control Configuration

Copp Speed limit

Port Security

Syslog Configuration

SFLOW Configuration

Mirror Configuration

Network Management And Monitoring

Command Line Reference