HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Conf - Page 4

Configuration guidelines 23 Configuration prerequisites 23 Configuration procedure 23 Displaying and maintaining IP addressing 24 DHCP overview 25 DHCP address allocation 25 Dynamic IP address allocation process 26 IP address lease extension 26 DHCP message format 27 DHCP options 28 Common DHCP options 28 Custom options 28 Protocols and standards 32 Configuring DHCP relay agent 34 Overview 34 Fundamentals 34 DHCP relay agent support for Option 82 35 DHCP relay agent configuration task list 36 Enabling DHCP 36 Enabling the DHCP relay agent on an interface 36 Correlating a DHCP server group with a relay agent interface 37 Configuration guidelines 37 Configuration procedure 37 Configuring the DHCP relay agent security functions 38 Configuring address check 38 Configuring periodic refresh of dynamic client entries 38 Enabling unauthorized DHCP server detection 39 Enabling DHCP starvation attack protection 39 Enabling offline detection 40 Configuring the DHCP relay agent to release an IP address 40 Configuring the DHCP relay agent to support Option 82 41 Configuration prerequisites 41 Configuration guidelines 41 Configuration procedure 41 Setting the DSCP value for DHCP packets 42 Displaying and maintaining the DHCP relay agent 42 DHCP relay agent configuration examples 43 DHCP relay agent configuration example 43 DHCP relay agent Option 82 support configuration example 44 Troubleshooting DHCP relay agent configuration 45 Symptom 45 Analysis 45 Solution 45 Configuring DHCP client 46 Configuration restrictions 46 Enabling the DHCP client on an interface 46 Setting the DSCP value for DHCP packets 46 Displaying and maintaining the DHCP client 47 DHCP client configuration example 47 Network requirements 47 Configuration procedure 47 ii