Zte ZXR10 5900E Series - _ Topology

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ZXR10(config-gei_1/1)#exit
ZXR10(config)#interface gei_1/2
ZXR10(config)#ipv4 protocol-protect mode dhcp enable
ZXR10(config-gei_1/2)#switch access vlan 100
ZXR10(config-gei_1/2)#exit
Step2：Enable dhcp-snooping on global
ZXR10(config)#ip dhcp snooping enable
Step3：Enable DHCP snooping on vlan and assign Uplink port as trusted port
ZXR10(config)#ip dhcp snooping vlan 100
ZXR10(config)#ip dhcp snooping trust gei_1/1
B. DHCP option82 Configuration Procedure
_ Topology
DHCP server
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DHCP Require
DHCP Option82
_ Setup
Step1 enable DHCP snooping function same as Case A
Step2：enable option 82 on global
ZXR10(config)#ip dhcp snooping information option
C. ARP source check Configuration Procedure
_ Topology