Advantech EKI-9512-C0IDW10E, Руководство пользователя

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EKI-9500 Series User Manual 158
4.4.2.2 L2 Relay
Global
Use the DHCP L2 Relay Global Configuration page to control the administrative
mode of DHCP Layer 2 Relay on the device. In Layer 2 switched networks, there
may be one or more infrastructure devices (for example, a switch) between the client
and the L3 Relay agent/DHCP server. In this instance, some of the client device infor-
mation required by the L3 Relay agent may not be visible to it. When this happens,
an L2 Relay agent can be used to add the information that the L3 Relay Agent and
DHCP server need to perform their roles in IP address configuration and assignment.
To access this page, click Switching > DHCP Snooping > L2 Relay > Global .
Figure 4.164 Switching > DHCP Snooping > L2 Relay > Global
The following table describes the items in the previous figure.
Interface Configuration
Use the DHCP L2 Relay Interface Configuration page to enable L2 DHCP relay on
individual ports. Note that L2 DHCP relay must also be enabled globally on the
device. To change the DHCP L2 relay settings for one or more interfaces, select each
entry to modify and click Edit. The same settings are applied to all selected inter-
faces.
To access this page, click Switching > DHCP Snooping > L2 Relay > Interface
Configuration .
Figure 4.165 Switching > DHCP Snooping > L2 Relay > Interface Configuration
DHCP Server Msgs
Received The number of DHCP server messages (DHCPOFFER, DHCPACK,
DHCPNAK, DHCPRELEASEQUERY) that have been dropped on an
untrusted port.
Refresh Click Refresh to update the screen.
Clear Counters Click Clear Counters to reset all statistics to zero for all interfaces.
Item Description
Item Description
Admin Mode The global mode of DHCP L2 relay on the device. When enabled, the
device can act as a DHCP L2 relay agent. This functionality must also
be enabled on each port you want this service to operate on.
Submit Click Submit to save the values and update the screen.
Refresh Click Refresh to update the screen.
Cancel Click Cancel to restore default value.