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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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After MFF is Enabled in a VLAN and Timed Gateway Address Detection is Enabled, the Gateway MAC Address is Empty Although the Switch Has Learned the Gateway MAC Address. Why?

After MFF is Enabled in a VLAN and Timed Gateway Address Detection is Enabled, the Gateway MAC Address is Empty Although the Switch Has Learned the Gateway MAC Address. Why?

In V100R006 and later versions, a switch enabled with timed gateway address detection considers the gateway as invalid if the switch does not receive any response after five probes. The switch then clears the current gateway MAC address and the ACL rule delivering the gateway MAC address. This prevents user communication caused by the gateway failure.

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Updated: 2019-09-23

Document ID: EDOC1000178319

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