ZXR10 5900/5200 Series User Manual (Basic Configuration Volume)
Command
Function
ZXR10(config)#
ip dhcp snooping clear
[<
interface-num
ber
>]
This deletes the entry of DHCP
SNOOPING binding table on
layer 2 interface manually.
<interface-number> physical
interface numbersuch as fei, gei
and smartgroup.
3. To enable DHCP SNOOPING or disable DHCP SNOOPING, use
the following command.
Step Command
Function
1
ZXR10(config)#
ip dhcp snooping enable
After DHCP SNOOPING is
globally enabled, DHCP
SNOOPING need to be
enabled on the corresponding
VLAN to take effect on it.
2
ZXR10(config)#
no ip dhcp snooping enable
This disables DHCP
SNOOPING function.
4. To configure if 82 option is inserted when DHCP SNOOPING is
configured, use the following command.
Step Command
Function
1
ZXR10(config)#
ip dhcp snooping information option
This inserts 82 option.
2
ZXR10(config)#
no ip dhcp snooping information
option
This doesn’t insert 82 option.
5. To configure the 82 option format or delete the configured 82
option format and restore the default format, use the following
command.
Step Command
Function
1
ZXR10(config)#
ip dhcp snooping information format
{
china-tel
|
dsl-forum
}
This configures 82 option
format which is inserted
when DHCP SNOOPING is
configured,
china-tel: China Telecom 82
option format.
dsl-forum:DSL forum 82
option format.
The default is China Telecom
82 option format.
2
ZXR10(config)#
no ip dhcp snooping information
format
This cancels configured 82
option format to restore
default format.
6. To configure the policy of forwarding DHCP data packet 82 op-
tion or cancel the policy, use the following command.
92
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