Configuring Dhcp Snooping Basic Functions; Configuring Dhcp Snooping To Support Option - H3C S3610-28P Operation Manual

Operation Manual – DHCP
H3C S3610&S5510 Series Ethernet Switches
Note:
The handling strategy and padding format for Option 82 on the DHCP-Snooping device
are the same as those on the relay agent.

5.2 Configuring DHCP Snooping Basic Functions

Follow these steps to configure DHCP snooping basic functions:
Enter system view
Enable DHCP snooping
Enter Ethernet port view
Specify the port as trusted
Note:
You need to specify the ports connected to the valid DHCP servers as trusted to
ensure that DHCP clients can obtain valid IP addresses. The trusted port and the
port connected to the DHCP client must be in the same VLAN.
You are not recommended to configure both the DHCP snooping and selective
Q-in-Q function on the switch, which may result in the DHCP snooping to function
abnormally.

5.3 Configuring DHCP Snooping to Support Option 82

5.3.1 Prerequisites
You need to enable the DHCP Snooping function before configuring DHCP Snooping to
support Option 82.
To do...
system-view
dhcp-snooping
interface interface-type
interface-number
dhcp-snooping trust
Chapter 5 DHCP Snooping Configuration
Use the command...
5-3
Remarks
—
Required
Disabled by default.
—
Required
Untrusted by default.