Configuring Ip Filtering - H3C S5600 Series Operation Manual

Follow these steps to configure the remote ID sub-option in Option 82:
To do...
Enter system view
Configure the remote ID sub-option
in system view
Enter Ethernet port view
Configure the remote ID sub-option
in Ethernet port view
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.
Configuring the padding format for Option 82
Follow these steps to configure the padding format for Option 82:
To do...
Enter system view
Configure the padding format

Configuring IP Filtering

Follow these steps to configure IP filtering:
Use the command...
system-view
dhcp-snooping information
remote-id { sysname | string
string }
interface interface-type
interface-number
dhcp-snooping information
[ vlan vlan-id ] remote-id string
string
Use the command...
system-view
dhcp-snooping information
packet-format { extended |
standard }
4-9
Remarks
—
Optional
By default, the remote ID
sub-option is the MAC address of
the DHCP snooping device that
received the DHCP client's
request.
—
Optional
By default, the remote ID
sub-option is the MAC address of
the DHCP snooping device that
received the client's request.
Remarks
—
Optional
By default, the padding format is in
extended format.