Huawei Quidway S3700 Series Configuration Manual page 125

Quidway S3700 Series Ethernet Switches
Configuration Guide - Security
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Issue 01 (2011-07-15)
The function of checking the rate of sending DHCP messages is enabled.
By default, the function of checking the rate of sending DHCP messages is disabled
globally.
3. Run:
dhcp snooping check dhcp-rate rate
The rate of sending DHCP messages is set.
By default, the maximum rate of sending DHCP messages is 100 pps. The DHCP
messages exceeding the rate are discarded.
Setting the maximum rate of sending DHCP messages in the VLAN view
1. Run:
system-view
The system view is displayed.
2. Run:
vlan vlan-id
The VLAN view is displayed.
3. Run:
dhcp snooping check dhcp-rate enable
The function of checking the rate of sending DHCP messages is enabled in the VLAN
view.
By default, the function of checking the rate of sending DHCP messages is disabled
in the VLAN view.
4. Run:
dhcp snooping check dhcp-rate rate
The rate of sending DHCP messages is set.
By default, the maximum rate of sending DHCP messages is 100 pps. The DHCP
messages exceeding the rate are discarded.
Setting the maximum rate of sending DHCP messages in the interface view
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
dhcp snooping check dhcp-rate { enable | enable rate | rate } [ alarm dhcp-
rate [ enable ] [ threshold threshold-value ] ]
The following functions are configured on an interface:
– The function of checking the rate of sending DHCP messages to the DHCP stack
is enabled.
– The rate limit of sending DHCP messages to the DHCP stack is set.
– The DHCP message discard alarm is enabled.
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3 DHCP Snooping Configuration
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