Limiting The Rate Of Sending Dhcp Messages - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Security
Context
You need to enable DHCP snooping globally before enabling DHCP snooping on an interface.
By default, DHCP snooping is disabled globally and on an interface.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
dhcp snooping enable
DHCP snooping is enabled globally.
Step 3 Run:
interface interface-type interface-number
The interface view is displayed.
The interface can be an Ethernet interface, a GE interface, or an Eth-Trunk interface.
Step 4 Run:
dhcp snooping enable
DHCP snooping is enabled on the interface.
DHCP snooping must be enabled on all the network-side interfaces and user-side interfaces of
the S9300. Otherwise, configurations related to DHCP snooping do not take effect on the
interfaces.
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2.6.3 Limiting the Rate of Sending DHCP Messages

Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
dhcp snooping check dhcp-rate enable
The S9300 is enabled to check the rate of sending DHCP messages.
By default, the S9300 is disabled from checking the rate of sending DHCP messages.
Step 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 packets
exceeding the rate are discarded.
Issue 01 (2009-07-28) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 DHCP Snooping Configuration
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