UMN:CLI
User Manual
V8102
440
lease
PORTS
You can limit the number of entry registration only for untrusted interfaces, because the
DHCP snooping binding table only contains the information for DHCP messages from un-
trusted interfaces.
9.7.2.5
Specifying DHCPv6 Snooping Binding Entry
The DHCPv6 snooping binding table contains a hardware address, IPv6 address, lease
time, VLAN ID, and port information that correspond to the valid interfaces of the system.
To manually add DHCPv6 snooping binding entry, use the following command.
Command
Mode
Description
ipv6 dhcp snooping binding
<1-
4094>
X:X::X:X MAC-ADDR
<120-
2147483637>
Interface
[XE/GE/GP
ON]
Adds the static entry to the DHCPv6 snooping binding
table.
1-4094: VLAN ID
X:X::X:X: IPv6 address
MAC-ADDR: DHCPv6 client
’s MAC address
120-2147483637: Expiry time (unit: second)
To remove the configured entry from DHCPv6 snooping binding table, use the following
command.
Command
Mode
Description
clear ipv6 dhcp snooping bind-
ing
{
X:X::X:X
|
all
}
Interface
[XE/GE/CG/
GPON]
Removes the static entry from the DHCPv6 snooping
table.
X:X::X:X: IPv6 address
9.7.2.6
DHCP Snooping Option
DHCP snooping-enabled switch may receive DHCP messages with various different op-
tions from clients, which cause DHCP server hard to manage
client’s information in the
perspective of data consistency. That
’s why this function is necessary.
The switch operating DHCP snooping can modify or attach an option field of the DHCP
messages with the defined snooping option and can forward them to DHCP server. The
snooping option can be applied on a port basis or on entire ports.
Before using this function, a global DHCPv6 option format should be created and config-
ured. For details of setting the DHCP option format, refer to the
To enter the DHCPv6 option mode, use the following command.
Command
Mode
Description
ipv6 dhcp option format NAME
Global
Enters the DHCPv6 option mode to configure the
DHCPv6 option format.
NAME: DHCPv6 option format name
no ipv6 dhcp option format
Deletes the given DHCPv6 option format.
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