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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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ARP Proxy on a VPLS Network

ARP Proxy on a VPLS Network

To prevent bogus ARP packets at the PW side from being broadcast to the AC side on a VPLS network, enable ARP proxy and DHCP snooping over VPLS on a PE.

ARP packets at the PW side are sent to the control board:
  • If the ARP packets are ARP Request packets and the destination IP addresses in the packets match DHCP snooping binding entries, the device constructs ARP Reply packets based on the DHCP snooping binding entries. The device then sends the ARP Reply packets to the requester at the PW side.
  • If the ARP packets are not ARP Request packets or the destination IP addresses in the packets do not match a DHCP snooping binding entry, the device forwards these ARP packets to the destination.
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Updated: 2019-04-01

Document ID: EDOC1000178319

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