User Manual
UMN:CLI
V8102
417
Command
Mode
Description
ip dhcp snooping limit-rate
<1-
255>
Interface
[XE/GE/
GPON/CG]
Sets a rate limit of DHCP packets.
1-255: the number of DHCP packets per second
no ip dhcp snooping limit-rate
Disable the discover message limit function.
9.6.7.5
DHCP Lease Limit
The number of entry registrations in DHCP snooping binding table can be limited. If there
are too many DHCP clients on an interface and they request IP address at the same time,
it may cause IP pool exhaustion.
To set the number of entry registrations in DHCP snooping binding table, use the follow-
ing command.
Command
Mode
Description
ip dhcp snooping limit-lease
<1-
2147483637>
Interface
[XE/GE/
GPON/CG]
Enables a DHCP lease limit on a specified un-
trusted port.
1-2147483637: the number of entry registrations
no ip dhcp snooping limit-lease
Deletes a DHCP lease limit.
You can limit the number of entry registrations only for untrusted interfaces, because the
DHCP snooping binding table only contains the information for DHCP messages from un-
trusted interfaces.
9.6.7.6
Source MAC Address Verification
The V8102 can verify that the source MAC address in a DHCP packet that is received on
untrusted ports matches the client hardware address in the packet.
To enable the source MAC address verification, use the following command.
Command
Mode
Description
ip dhcp snooping verify mac-address
Global
Enables the source MAC address veri-
fication.
no ip dhcp snooping verify mac-address
Disables the source MAC address veri-
fication.
9.6.7.7
Static DHCP Snooping Binding
The DHCP snooping binding table contains a hardware address, IP address, lease time,
VLAN ID, and port information that correspond to the untrusted interfaces of the system.
To manually specify a DHCP snooping binding entry, use the following command.
Command
Mode
Description
ip dhcp snooping binding
<1-
4094>
A.B.C.D MAC-ADDR
<infi-
nite | 120-2147483637>
Interface
[XE/GE/
GPON/CG]
Configures binding on DHCP snooping table.
1-4094: VLAN ID
A.B.C.D: IP address
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