H3C SR8800-F Configuration Manual page 9

Example: Configuring static IP address assignment ································································ 120
Example: Configuring dynamic IP address assignment ···························································· 121
Example: Configuring DHCP user class ··············································································· 123
Example: Configuring DHCP user class whitelist ···································································· 125
Example: Configuring primary and secondary subnets ···························································· 126
Example: Customizing DHCP option ··················································································· 127
Example: Configuring DHCP server (WLAN application) ································································· 129
Network configuration ······································································································· 129
Procedure ······················································································································ 130
Verifying the configuration ································································································· 130
Troubleshooting DHCP server configuration ················································································ 130
Failure to obtain a non-conflicting IP address ········································································ 130
Configuring the DHCP relay agent ··················································· 132
About DHCP relay agent ········································································································· 132
DHCP relay agent operation ······························································································ 132
DHCP relay agent support for Option 82 ··············································································· 133
DHCP relay agent support for MCE ····················································································· 133
DHCP relay agent tasks at a glance ··························································································· 134
Enabling DHCP ····················································································································· 134
Enabling the DHCP relay agent on an interface ············································································ 134
Specifying DHCP servers ········································································································ 135
Specifying DHCP servers on a relay agent ············································································ 135
Configuring a DHCP address pool on a DHCP relay agent ······················································· 135
Specifying the DHCP server selecting algorithm ····································································· 136
Configuring the DHCP relay agent security features ······································································ 138
Rustications and guidelines ······························································································· 138
Enabling the DHCP relay agent to record relay entries ···························································· 138
Enabling periodic refresh of dynamic relay entries ·································································· 138
Configuring DHCP flood attack protection ············································································· 139
Enabling DHCP starvation attack protection ·········································································· 139
Enabling DHCP server proxy on the DHCP relay agent ··························································· 140
Enabling client offline detection on the DHCP relay agent ························································ 141
Configuring the DHCP relay agent to release an IP address ···························································· 141
Configuring Option 82 ············································································································· 141
Setting the DSCP value for DHCP packets sent by the DHCP relay agent ·········································· 142
Configuring DHCP packet rate limit on a DHCP relay interface ························································ 143
Specifying the DHCP relay agent address for the giaddr field ························································· 143
Manually specifying the DHCP relay agent address for the giaddr field······································· 143
Configuring smart relay to specify the DHCP relay agent address for the giaddr field ···················· 143
Specifying the source IP address for DHCP requests····································································· 145
Configuring the DHCP relay agent to always unicast relayed DHCP responses ··································· 146
Configuring forwarding DHCP replies based on Option 82 ······························································ 146
Display and maintenance commands for DHCP relay agent ···························································· 147
DHCP relay agent configuration examples ·················································································· 148
Example: Configuring basic DHCP relay agent ······································································ 148
Example: Configuring Option 82 ························································································· 149
Example: Configuring DHCP server selection ········································································ 149
Troubleshooting DHCP relay agent configuration ·········································································· 151
Failure of DHCP clients to obtain configuration parameters through the DHCP relay agent ············· 151
Configuring the DHCP client ··························································· 152
About DHCP client ················································································································· 152
Restrictions and guidelines: DHCP client configuration ··································································· 152
Enabling the DHCP client on an interface ···················································································· 152
Configuring a DHCP client ID for an interface ··············································································· 152
Enabling duplicated address detection ························································································ 153
Setting the DSCP value for DHCP packets sent by the DHCP client ················································· 153
Display and maintenance commands for DHCP client ···································································· 154
DHCP client configuration examples ·························································································· 154
Example: Configuring DHCP client ······················································································ 154
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