D-Link DGS-3130 Emulator - Page 179

DGS-3130 Layer 3 Stackable Managed Switch CLI Reference Guide Switch# configure terminal Switch(config)# ip dhcp relay information option Switch(config)# interface vlan 100 Switch(config-if)# ip dhcp relay information option-insert none Switch(config-if)# 18-6 ip dhcp relay information policy This command is used to configure the Option 82 re-forwarding policy for the DHCP relay agent. Use the no form of this command to revert to the default setting. ip dhcp relay information policy {drop | keep | replace} no ip dhcp relay information policy Parameters drop keep replace Specifies to discard the packet that already has the relay option. Specifies that the DHCP requests packet that already has the relay option is left unchanged and directly relayed to the DHCP server. Specifies that the DHCP request packet that already has the relay option will be replaced by a new option. Default By default, this option is replace. Command Mode Global Configuration Mode. Command Default Level Level: 12. Usage Guideline The command only takes effect when the DHCP service is enabled. Use this command to configure the global policy for the insertion of Option 82 on packets that already have Option 82. Example This example shows how to configure the relay agent option re-forwarding policy to keep. If the ip dhcp relay information relay command is configured in the global configuration mode but not configured in the interface configuration mode, the global configuration is applied to all interfaces. Switch# configure terminal Switch(config)# ip dhcp relay information policy keep Switch(config)# 18-7 ip dhcp relay information policy-action This command is used to configure the information re-forwarding policy for the DHCP relay agent for an interface. Use the no form of this command to remove the configuration for the interface. 175