No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

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.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
(Optional) Configuring Association Between ARP and DHCP Snooping

(Optional) Configuring Association Between ARP and DHCP Snooping

Context

When a DHCP snooping-enabled device receives a DHCP Release message sent from a DHCP client, the device deletes the binding entry of the DHCP client. However, if a client is unexpectedly disconnected and cannot send a DHCP Release message, the device cannot immediately delete the binding entry of the DHCP client.

After association between ARP and DHCP snooping is enabled, the DHCP snooping-enabled device performs an ARP probe to detect the IP address when the ARP entry mapping an IP address ages. If the DHCP client is not detected after a specified number of probes, the device deletes the ARP entry. The device then performs an ARP probe again to detect the IP address. If the DHCP client still cannot be detected after a specified number of probes, the device deletes the binding entry of the DHCP client.

NOTE:

A device supports association between ARP and DHCP snooping only when the device functions as a DHCP relay agent.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run arp dhcp-snooping-detect enable

    Association between ARP and DHCP snooping is enabled.

    By default, association between ARP and DHCP snooping is disabled.

Translation
Download
Updated: 2019-04-01

Document ID: EDOC1000178319

Views: 137423

Downloads: 78

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next