HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Comm - Page 65

dhcp-snooping information sub-option

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replace: Forwards the message containing Option 82 after replacing the original Option 82 with the one padded in specified format. Description Use dhcp-snooping information strategy to configure the handling strategy for Option 82 in requesting messages. Use undo dhcp-snooping information strategy to restore the default. By default, the handling strategy for Option 82 in requesting messages is replace. Related commands: display dhcp-snooping information, dhcp-snooping information format and dhcp-snooping information sub-option. Examples # Configure the handling strategy for Option 82 in requesting messages as keep. system-view [Sysname] interface GigabitEthernet1/0/1 [Sysname-GigabitEthernet1/0/1] dhcp-snooping information enable [Sysname-GigabitEthernet1/0/1] dhcp-snooping information strategy keep dhcp-snooping information sub-option Syntax dhcp-snooping information [ vlan vlan-id ] sub-option sub-option-code [ string user-string& ] View undo dhcp-snooping information [ vlan vlan-id ] sub-option sub-option-code Layer 2 Ethernet port view, Layer 2 aggregate interface view Default level 2: System level Parameters vlan vlan-id: Specifies the ID of a VLAN, in the range of 1 to 4094. sub-option sub-option-code: Specifies the number of the sub-option. Currently, only sub-option 9 is supported. string user-string&: Configures the content of the sub-option, a case-sensitive string of 1 to 63 characters. & represents that you can enter a maximum of 8 strings separated by spaces. Description Use dhcp-snooping information sub-option to configure a sub-option. Use undo dhcp-snooping information sub-option to restore the default. By default, no sub-option is configured. This configuration applies to the private padding format only. To configure the private padding format, use the dhcp-snooping information format private 1 command. If no content is configured for sub-option 9 with the string user-string option, the primary device uses sysname and the primary address of the Loopback0 interface to pad sub-option 9 and the secondary device uses sysname to pad sub-option 9. The device configured with the dhcp-snooping information 58

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58
replace
: Forwards the message containing Option 82 after replacing the original Option 82 with the one
padded in specified format.
Description
Use
dhcp-snooping information strategy
to configure the handling strategy for Option 82 in requesting
messages.
Use
undo dhcp-snooping information strategy
to restore the default.
By default, the handling strategy for Option 82 in requesting messages is
replace
.
Related commands:
display dhcp-snooping information
,
dhcp-snooping information format
and
dhcp-snooping information sub-option.
Examples
# Configure the handling strategy for Option 82 in requesting messages as
keep
.
<Sysname> system-view
[Sysname] interface GigabitEthernet1/0/1
[Sysname-GigabitEthernet1/0/1] dhcp-snooping information enable
[Sysname-GigabitEthernet1/0/1] dhcp-snooping information strategy keep
dhcp-snooping information sub-option
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
View
Layer 2 Ethernet port view, Layer 2 aggregate interface view
Default level
2: System level
Parameters
vlan
vlan-id
: Specifies the ID of a VLAN, in the range of 1 to 4094.
sub-option
sub-option-code
: Specifies the number of the sub-option. Currently, only sub-option 9 is
supported.
string
user-string
&<1-8>: Configures the content of the sub-option, a case-sensitive string of 1 to 63
characters. &<1-8> represents that you can enter a maximum of 8 strings separated by spaces.
Description
Use
dhcp-snooping information sub-option
to configure a sub-option.
Use
undo dhcp-snooping information sub-option
to restore the default.
By default, no sub-option is configured.
This configuration applies to the private padding format only. To configure the private padding format,
use the
dhcp-snooping information format private 1
command.
If no content is configured for sub-option 9 with the
string
user-string
option, the primary device uses
sysname and the primary address of the Loopback0 interface to pad sub-option 9 and the secondary
device uses sysname to pad sub-option 9. The device configured with the
dhcp-snooping information