Checking The Configuration; Maintaining Dhcp Snooping; Clearing Dhcp Snooping Statistics - Huawei Quidway S3700 Series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Security
----End

3.8.4 Checking the Configuration

Checking the Configuration of Packet Discarding Alarm Function.
Prerequisite
The configurations of the packet discarding alarm function are complete.
Procedure
l
l
----End

3.9 Maintaining DHCP Snooping

This section describes how to maintain DHCP snooping.

3.9.1 Clearing DHCP Snooping Statistics

The statistics on globally discarded packets and the statistics on discarded packets on the
interface are cleared.
Context
To clear the statistics on DHCP snooping discarded packets, run the following commands in the
user view.
Procedure
l
l
Issue 01 (2011-07-15)
By default, the packet discarding alarm is disabled, and the threshold that triggers the
alarm on discarded packets is 100.
After dhcp snooping alarm command is configured, the S3700 discards the following
types of packets:
– DHCP Request messages that do not match entries in the DHCP Snooping binding
table
– DHCP Reply messages received by untrusted interfaces
– DHCP Request messages whose source MAC address does not match the
CHADDR field
Run the display dhcp snooping global command to check information about global DHCP
snooping.
Run the display dhcp snooping interface interface-type interface-number command to
check information about DHCP snooping on the interface.
Run the reset dhcp snooping statistics global command to clear the statistics on globally
discarded packets.
Run the reset dhcp snooping statistics interface interface-type interface-number
command to clear the statistics on discarded packets on the interface.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 DHCP Snooping Configuration
117