R2511-HP MSR Router Series Layer 3 - IP Services Command Reference(V5)

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Parameters
append: Forwards the message containing Option 82 after adding content to sub-option 9 of Option 82.
The append strategy is supported only when the private padding format and sub-option 9 are configured.
In other cases, the device forwards the message without changing Option 82.
drop: Drops the requesting message containing Option 82.
keep: Keeps the original Option 82 intact.
replace: Replaces the original Option 82 with the configured Option 82.
Usage guidelines
The following matrix shows the command in different views and hardware compatibility:
Hardware
Command in Layer 2 aggregate
interface vie
w
Command in WLAN-BSS interface
vie
w
MSR900 No Yes
MSR93X No
Yes (Supported by the JG512A,
JG519A and JG597A)
MSR20-1X No Yes
MSR20 No Yes
MSR30 Yes Yes
MSR50 Yes Yes
MSR1000 Yes Yes
Examples
# Configure the handling strategy for Option 82 in requesting messages as keep.
<Sysname> system-view
[Sysname] interface ethernet1/1
[Sysname-Ethernet1/1] dhcp-snooping information enable
[Sysname-Ethernet1/1] dhcp-snooping information strategy keep
Related commands
• display dhcp-snooping information
• dhcp-snooping information format
• dhcp-snooping information sub-option
dhcp-snooping information sub-option
Use dhcp-snooping information sub-option to configure a sub-option.
Use undo dhcp-snooping information sub-option to restore the default.
Syntax
dhcp-snooping information [ vlan vlan-id ] sub-option sub-option-code [ string user-string&<1-8> ]
undo dhcp-snooping information [ vlan vlan-id ] sub-option sub-option-code
Default
No sub-option is configured.