Advantech EKI-9512-C0IDW10E, Руководство пользователя

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EKI-9500 Series User Manual 160
To add a new DHCP L2 relay VLAN configuration:
Click Switching > DHCP Snooping > L2 Relay > VLAN Configuration > Add .
Figure 4.167 Switching > DHCP Snooping > L2 Relay > VLAN Configuration >
Add
The following table describes the items in the previous figure.
Statistics
The DHCP L2 Relay Interface Statistics page shows statistical information about the
L2 DHCP Relay requests received on trusted and untrusted interfaces. An interface
is untrusted when the DHCP L2 relay trust mode is disabled.
Remote ID The DHCP remote identifier string. When a string is entered here, if a
client sends a DHCP request to the device and the client is in a VLAN
that corresponds to the S-VID, the device adds the string to the
Remote-ID suboption of Option 82 in the DHCP request packet. This
suboption can be used by the server for parameter assignment. The
content of this option is vendor-specific.
Refresh Click Refresh to update the screen.
Add Click Add to add a new DHCP L2 relay VLAN configuration.
Edit Click Edit to edit the selected entries.
Remove Click Remove to remove the selected entries.
Item Description
VLAN ID The VLAN associated with the rest of the data in the row. When config-
uring the settings for one or more VLANs, this field identifies each
VLAN that is being configured.
Circuit ID The administrative mode of the circuit ID. When enabled, if a client
sends a DHCP request to the device and the client is in a VLAN that
corresponds to the S-VID, the device adds the client's interface num-
ber to the Circuit ID sub-option of Option 82 in the DHCP request
packet. This enables the device to reduce the broadcast domain to
which the server replies are switched when the broadcast bit is set for
DHCP packets. When this bit is set, the server is required to echo
Option 82 in replies. Since the circuit-id field contains the client inter-
face number, the L2 relay agent can forward the response to the
requesting interface only, rather to all ports in the VLAN).
Remote ID The DHCP remote identifier string. When a string is entered here, if a
client sends a DHCP request to the device and the client is in a VLAN
that corresponds to the S-VID, the device adds the string to the
Remote-ID suboption of Option 82 in the DHCP request packet. This
suboption can be used by the server for parameter assignment. The
content of this option is vendor-specific.
Submit Click Submit to save the values.
Cancel Click Cancel to close the window.
Item Description