3Com S7902E Command Reference Manual - page 558
4-2
Related commands:
display dhcp-snooping
.
Examples
# Enable DHCP snooping.
[Sysname] dhcp-snooping
dhcp-snooping information circuit-id format-type
Syntax
dhcp-snooping information circuit-id format-type
{
ascii
|
hex
}
undo dhcp-snooping information circuit-id format-type
View
Ethernet port view
Default Level
2: System level
Parameters
ascii
: Specifies the code type for the circuit ID sub-option as
ascii
.
hex
: Specifies the code type for the circuit ID sub-option as
hex
.
Description
Use the
dhcp-snooping information circuit-id format-type
command to configure the code type for
the non-user-defined circuit ID sub-option.
Use the
undo dhcp-snooping information circuit-id format-type
command to restore the default.
By default, the code type for the circuit ID sub-option depends on the padding format of Option 82. Each
field has its own code type.
Note that:
This command applies to configuring the non-user-defined circuit ID sub-option only. After you
configure the padding content for the circuit ID sub-option using the
dhcp-snooping information
circuit-id string
command, ASCII is adopted as the code type.
Examples
# Configure the padding format for the non-user-defined circuit ID sub-option as
ascii
.
[Sysname] interface gigabitethernet 2/0/1
[Sysname-GigabitEthernet2/0/1] dhcp-snooping information circuit-id format-type ascii
dhcp-snooping information circuit-id string
Syntax
dhcp-snooping information
[
vlan vlan-id
]
circuit-id string circuit-id
undo dhcp-snooping information
[
vlan vlan-id
]
circuit-id string