H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 213)

26-18
Figure 26-16 DHCP relay agent configuration page
Table 26-4 describes the DHCP service and advanced DHCP relay agent configuration items.
Table 26-4 DHCP service and advanced DHCP relay agent configuration items
Item Description
DHCP Service Enable or disable global DHCP.
Unauthorized
Server Detect
Enable or disable unauthorized DHCP server detection.
There are unauthorized DHCP servers on networks, which reply DHCP clients with wrong IP
addresses.
With this feature enabled, upon receiving a DHCP request, the DHCP relay agent will record
the IP address of any DHCP server that assigned an IP address to the DHCP client and the
receiving interface. The administrator can use this information to check out DHCP
unauthorized servers. The device puts a record once for each DHCP server. The
administrator needs to find unauthorized DHCP servers from the log information. After the
information of recorded DHCP servers is cleared, the relay agent will re-record server
information following this mechanism.