Operation Manual – DHCPH3C S3100 Series Ethernet Switches Table of ContentsiTable of ContentsChapter 1 DHCP Overview............................................................................................................ 1-11.1 Introduction to DHCP......................................................................................................... 1-11.2 DHCP IP Address Assignment .......................................................................................... 1-11.2.1 IP Address Assignment Policy ................................................................................ 1-11.2.2 Obtaining IP Addresses Dynamically ...................................................................... 1-21.2.3 Updating IP Address Lease .................................................................................... 1-31.3 DHCP Packet Format ........................................................................................................ 1-31.4 Protocol Specification ........................................................................................................ 1-4Chapter 2 DHCP Snooping Configuration .................................................................................. 2-12.1 Introduction ........................................................................................................................ 2-12.1.1 Introduction to DHCP Snooping .............................................................................. 2-12.1.2 Introduction to DHCP Snooping Trusted/Untrusted Ports ...................................... 2-22.1.3 Introduction to Unauthorized DHCP Server Detection............................................ 2-22.1.4 Overview of DHCP-Snooping Option 82................................................................. 2-32.1.5 Overview of IP Filtering ........................................................................................... 2-62.2 DHCP Snooping Configuration .......................................................................................... 2-72.2.1 Configuring DHCP Snooping .................................................................................. 2-72.2.2 Configuring DHCP Snooping Trusted/Untrusted Ports ........................................... 2-72.3 Configuring Unauthorized DHCP Server Detection........................................................... 2-82.3.1 Configuring DHCP Snooping to Support Option 82 ................................................ 2-92.3.2 Configuring IP Filtering.......................................................................................... 2-132.4 Displaying DHCP Snooping Configuration ...................................................................... 2-142.5 DHCP Snooping Configuration Example......................................................................... 2-152.5.1 DHCP-Snooping Option 82 Support Configuration Example................................ 2-152.5.2 Unauthorized DHCP Server Detection Configuration Example ............................ 2-172.5.3 IP Filtering Configuration Example........................................................................ 2-18Chapter 3 DHCP Packet Rate Limit Configuration..................................................................... 3-13.1 Introduction to DHCP Packet Rate Limit ........................................................................... 3-13.2 Configuring DHCP Packet Rate Limit ................................................................................ 3-23.2.1 Configuring DHCP Packet Rate Limit ..................................................................... 3-23.2.2 Configuring Port State Auto Recovery .................................................................... 3-23.3 Rate Limit Configuration Example ..................................................................................... 3-3Chapter 4 DHCP/BOOTP Client Configuration ........................................................................... 4-14.1 Introduction to DHCP Client............................................................................................... 4-14.2 Introduction to BOOTP Client ............................................................................................ 4-14.3 Configuring a DHCP/BOOTP Client .................................................................................. 4-24.4 DHCP Client Configuration Example ................................................................................. 4-2
