Configuring Ip Filtering - H3C S5600 Series Operation Manual

Operation Manual – DHCP
H3C S5600 Series Ethernet Switches
Note:
If you configure a remote ID sub-option in both system view and on a port, the
remote ID sub-option configured on the port applies when the port receives a packet,
and the global remote ID applies to other interfaces that have no remote ID
sub-option configured.
If you have configured a remote ID with the vlan vlan-id argument specified, and the
other one without the argument in Ethernet port view, the former remote ID applies
to the DHCP messages from the specified VLAN, while the latter one applies to
DHCP messages from other VLANs.
In a port aggregation group, you can use this command to configure the primary and
member ports respectively. When Option 82 is added, however, the remote ID is
subject to the one configured on the primary port.
The remote ID configured on a port will neither be synchronized in the case of port
aggregation nor support IRF.
VI. Configuring the padding format for Option 82
Follow these steps to configure the padding format for Option 82:
Enter system view
Configure the padding
format

4.2.3 Configuring IP Filtering

Follow these steps to configure IP filtering:
To do...
Enter system view
Enter Ethernet port
view
Enable IP filtering
To do...
system-view
dhcp-snooping
information
packet-format
{ extended | standard }
Use the command...
system-view
interface interface-type
interface-number
ip check source ip-address
[ mac-address ]
Chapter 4 DHCP Snooping Configuration
Use the command...
4-11
Remarks
—
Optional
By default, the padding
format is in extended
format.
Remarks
—
—
Required
By default, this function is
disabled.