F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Command Reference-6PW100

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Syntax
dhcp relay security tracker { interval | auto }
undo dhcp relay security tracker [ interval ]
Default
The refreshing interval is auto, the value of 60 seconds divided by the number of binding entries.
Views
System view
Default command level
2: System level
Parameters
interval: Refreshing interval in seconds in the range of 1 to 120.
auto: Specifies the auto refreshing interval, which is the value of 60 seconds divided by the number of
binding entries. The more entries there are, the shorter the interval. The shortest interval is no less than
500 ms.
Examples
# Set the refreshing interval as 100 seconds.
<Sysname> system-view
[Sysname] dhcp relay security tracker 100
Related commands
display dhcp relay security tracker
dhcp relay server-detect
Use dhcp relay server-detect to enable unauthorized DHCP server detection.
Use undo dhcp relay server-detect to disable unauthorized DHCP server detection.
Syntax
dhcp relay server-detect
undo dhcp relay server-detect
Default
Unauthorized DHCP server detection is disabled.
Views
System view
Default command level
2: System level
Usage guidelines
With this function enabled, upon receiving a DHCP request, the DHCP relay agent records the IP
addresses of all DHCP servers that offered IP addresses to the DHCP client and the receiving interface.
Each server detected is recorded only once. The administrator can use this information from logs to check
for unauthorized DHCP servers.