Software User Manual
D-Link Unified Access System
12/10/09
Document
34CSFP6XXUWS-SWUM100-D7
Configuring DHCP Snooping
Page 183
Figure 107: DHCP L2 Relay Global Configuration
If you enable or disable this feature, click
Submit
to apply the changes to system.
DHCP L2 Relay Interface Configuration
Use this page to enable L2 DHCP relay on individual ports. Note that L2 DHCP relay must also be enabled globally on the
switch. To access this page, click
LAN > L2 Features > DHCP Snooping > DHCP L2 Relay > Interface Configuration
.
Figure 108: DHCP L2 Relay Interface Configuration
If you change any settings on this page, click
Submit
to apply the changes to system.
Table 93: DHCP L2 Relay Interface Configuration
Field
Description
Slot/Port
Select the slot/port to configure this feature on.
DHCP L2 Relay Mode
Enable or disable L2 Relay mode on the selected interface.
DHCP L2 Relay Trust Mode
Enable or disable L2 Relay Trust Mode on the selected interface.
Trusted interfaces usually connect to other agents or servers
participating in the DHCP interaction (e.g. other L2 or L3 Relay Agents
or Servers). When enabled in Trust Mode, the interface always expects
to receive DHCP packets that include Option 82 information. If Option 82
information is not included, then these packets are discarded.
Untrusted interfaces are generally connected to clients. DHCP packets
arriving on an untrusted interface are never expected to carry Option 82
and are discarded if they do.