Huawei Quidway S9300 Configuration Manual page 117

Quidway S9300 Terabit Routing Switch
Configuration Guide - Security
system-view
The system view is displayed.
Step 2 Run:
dhcp enable
DHCP is enabled globally.
Step 3 Run:
dhcp snooping enable
DHCP snooping is enabled globally.
Step 4 Run:
interface interface-type interface-number
The interface view is displayed.
The interface can be an Ethernet interface, a GE interface, or an Eth-Trunk interface.
Or, run:
vlan vlan-id
The VLAN view is displayed.
Step 5 Run:
dhcp snooping enable
DHCP snooping is enabled on the interfaceor in a VLAN.
DHCP snooping must be enabled on all the user-side interfaces of the S9300. Otherwise,
configurations related to DHCP snooping do not take effect on the interfaces. This restriction
does not apply to a network-side interface.
Step 6 (Optional) Run:
quit
Return to the system view.
Step 7 (Optional) Run:
dhcp snooping over-vpls enable
DHCP snooping is enabled on the S9300 of the VPLS network.
On the VPLS network, after the dhcp snooping over-vpls enable command is run on the
S9300, DHCP over VPLS messages are sent to the CPU of the main control board for processing.
In this case, if you set related parameters of DHCP snooping on the interface, the S9300 can
process DHCP messages on the VPLS network. The dhcp snooping over-vpls enable command
takes effect only after DHCP snooping is enabled globally and on the interface.
DHCP snooping over VPLS is often deployed on the PE of the VPLS network to control DHCP
messages sent to the VPLS network from the user side. The dhcp snooping over-vpls enable
command is run in the system view. Other configurations of DHCP snooping over VPLS are
the same as configurations of DHCP snooping.
----End
Issue 06 (2010–01–08)
NOTE
The master physical interfaces of the S9300 do not support DHCP snooping over VPLS.
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3 DHCP Snooping Configuration
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