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keep: Keeps the original Option 82 intact and forwards the DHCP messages.
replace: Replaces the original Option 82 with the configured Option 82 before forwarding the DHCP
messages.
Usage guidelines
This command takes effect only on DHCP requests that contain Option 82. For DHCP requests that
do not contain Option 82, the DHCP snooping device always adds Option 82 into the requests before
forwarding them to the DHCP server.
If the handling strategy is replace, configure a padding mode and a padding format for Option 82. If
the handling strategy is keep or drop, you do not need to configure a padding mode or padding
format for Option 82.
Examples
# Specify the handling strategy for Option 82 in request messages as keep.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] dhcp snooping information enable
[Sysname-HundredGigE1/0/1] dhcp snooping information strategy keep
Related commands
dhcp snooping information circuit-id
dhcp snooping information remote-id
dhcp snooping log enable
Use dhcp snooping log enable to enable DHCP snooping logging.
Use undo dhcp snooping log enable to disable DHCP snooping logging.
Syntax
dhcp snooping log enable
undo dhcp snooping log enable
Default
DHCP snooping logging is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
This command enables the DHCP snooping device to generate DHCP snooping logs and send them
to the information center. For information about the log destination and output rule configuration in
the information center, see Network Management and Monitoring Configuration Guide.
As a best practice, disable this feature if the log generation affects the device performance.
Examples
# Enable DHCP snooping logging.
<Sysname> system-view
[Sysname] dhcp snooping log enable
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