HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Conf - Page 65
DHCP snooping configuration examples, Network requirements, Configuration procedure
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Task Clear DHCP packet statistics on the DHCP snooping device. Command reset dhcp-snooping packet statistics [ slot slot-number ] Remarks Available in user view DHCP snooping configuration examples DHCP snooping configuration example Network requirements As shown in Figure 34, Switch is connected to a DHCP server through GigabitEthernet 1/0/1, and to two DHCP clients through GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3. GigabitEthernet 1/0/1 forwards DHCP server responses while the other two do not. Switch records clients' IP-to-MAC address bindings in DHCP-REQUEST messages and DHCP-ACK messages received from trusted ports. Figure 34 Network diagram Configuration procedure # Enable DHCP snooping. system-view [Switch] dhcp-snooping # Specify GigabitEthernet 1/0/1 as trusted. [Switch] interface GigabitEthernet 1/0/1 [Switch-GigabitEthernet1/0/1] dhcp-snooping trust [Switch-GigabitEthernet1/0/1] quit DHCP snooping Option 82 support configuration example Network requirements As shown in Figure 34, enable DHCP snooping and Option 82 support on Switch. • Configure the handling strategy for DHCP requests containing Option 82 as replace. 57