User Manual
UMN:CLI
V8102
439
a VLAN.
9.7.2.2
DHCPv6 Snooping Port State
To define a state of a port as trusted or untrusted, use the following command.
Command
Mode
Description
ipv6 dhcp snooping trust
Global
Interface
[GE/XE/GP
ON]
Configures the GPON port as a DHCPv6 snooping
trusted port.
no ipv6 dhcp snooping trust
Configures the GPON port as a DHCPv6 snooping
untrusted port.
9.7.2.3
DHCP Rate Limit
To set the number of DHCPv6 packet per second (pps) that an interface can receive, use
the following command.
Command
Mode
Description
ipv6 dhcp snooping limit-rate
{
solicit
|
request
} <1-255>
Global
Sets a rate limit for DHCPv6 packets.
1-255: rate limit
ipv6 dhcp snooping limit-rate
<1-255>
Interface
[GE/XE/GP
ON]
Sets a rate limit for DHCPv6 packets. (unit: pps)
no ipv6 dhcp snooping limit-rate
[
solicit
|
request
]
Global
Interface
[GE/XE/GP
ON]
Deletes a rate limit for DHCPv6 packets.
Normally, the DHCP rate limit is specified to untrusted interfaces and 15 pps is recom-
mended for a proper value. However, if you want to set a rate limit for trusted interfaces,
keep in mind that trusted interfaces aggregate all DHCP traffic in the switch, and you will
need to adjust the rate limit to a higher value.
9.7.2.4
DHCP Lease Limit
The number of entry registration 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 registration in DHCP snooping binding table, use the following
command.
Command
Mode
Description
ipv6 dhcp snooping limit-lease
PORTS
<1-2147483637>
Global
Interface
[GE/XE/GP
ON]
Enables a DHCP lease limit on a specified untrusted
port.
1-2147483637: the number of entry registration
no ipv6 dhcp snooping limit-
Deletes a DHCP lease limit.
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