HP 4500G PWR 24-Port, Руководство по настройке

Страница: 308 / 1968

5-6
To do… Use the command… Remarks
Configure the
padding format for
Option 82
dhcp-snooping
information format
{
normal
|
verbose
[
node-identifier
{
mac
|
sysname
|
user-defined
node-identifier
} ] }
Optional
normal
by default.
Configure the code
type for the circuit ID
sub-option
dhcp-snooping
information circuit-id
format-type
{
ascii
|
hex
}
Optional
By default, the code type
depends on the padding
format of Option 82. Each
field has its own code
type.
This code type
configuration applies to
non-user-defined Option
82 only.
Configure
non-user-defined
Option 82
Configure the code
type for the remote
ID sub-option
dhcp-snooping
information remote-id
format-type
{
ascii
|
hex
}
Optional
hex
by default.
The code type
configuration applies to
non-user-defined Option
82 only.
Configure the
padding content for
the circuit ID
sub-option
dhcp-snooping
information
[
vlan vlan-id
]
circuit-id string circuit-id
Optional
By default, the padding
content depends on the
padding format of Option
82.
Configure
user-defined
Option 82
Configure the
padding content for
the remote ID
sub-option
dhcp-snooping
information
[
vlan vlan-id
]
remote-id string
{
remote-id
|
sysname
}
Optional
By default, the padding
content depends on the
padding format of Option
82.
z
You can enable DHCP snooping to support Option 82 on Layer 2 Ethernet interfaces only.
z
To support Option 82, it is required to perform related configuration on both the DHCP server and
the device enabled with DHCP snooping. Refer to
Configuring the Handling Mode for Option 82 for
DHCP server configuration of this kind.
z
If the handling strategy of the DHCP-snooping-enabled device is configured as
replace
, you need
to configure a padding format for Option 82. If the handling strategy is
keep
or
drop
, you need not
configure any padding format.
z
If the Option 82 is padded with the device name (sysname) of a node, the device name must
contain no spaces. Otherwise, the DHCP-snooping-enabled device will drop the message.