TP-Link TL-SG5426 -, Installation Manual

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DHCP Snooping
3-189
3
Command Attributes
• DHCP Snooping Information Option Status – Enables or disables DHCP Option
82 information relay.
• DHCP Snooping Information Option Policy – Sets the DHCP snooping
information option policy for DHCP client packets that include Option 82
information.
•
Replace – Overwrites the DHCP client packet information with the switch’s relay
information.
• Keep – Retains the client’s DHCP information.
• Drop – Discards the Option 82 information in a packet and then floods it to the
entire VLAN.
Web – Click DHCP Snooping, Information Option Configuration.
Figure 3-116 DHCP Snooping Information Option Configuration
CLI – This example enables DHCP Snooping Information Option, and sets the policy
as replace
.
DHCP Snooping Port Configuration
Configures switch ports as trusted or untrusted. An untrusted interface is an
interface that is configured to receive messages from outside the network or firewall.
A trusted interface is an interface that is configured to receive only messages from
within the network.
Command Attributes
• Trust Status – Enables or disables port as trusted.
Console(config)#ip dhcp snooping information option 4-235
Console(config)#ip dhcp snooping information policy replace 4-236
Console(config)#