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Configuration Guide - Security

S7700 and S9700 V200R011C10

This document describes the configurations of Security, including ACL, reflective ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, separating the management plane from the service plane, security risks.
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Default Settings for DHCP Snooping

Default Settings for DHCP Snooping

Table 9-2 lists the default settings for DHCP snooping.

Table 9-2  Default settings for DHCP snooping


Default Setting

DHCP snooping globally and on an interface


Interface status


Location transition for DHCP snooping users


Association between DHCP snooping and ARP


Option 82


Static MAC address entries generated based on dynamic DHCP snooping binding entries


Maximum rate of sending DHCP messages to the processing unit

100 pps

Checking DHCP messages against the DHCP snooping binding table


Checking whether the CHADDR field matches the source MAC address in the header of a DHCP Request message


Checking whether the GIADDR field in a DHCP Request message is 0


Updated: 2019-09-23

Document ID: EDOC1000178319

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