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

S9300, S9300E, and S9300X 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).
Strict ARP Learning Is Enabled on the Switch, and a User Has Learned the Switch's ARP Entry. Why Cannot the Switch Learn the User ARP Entry by Pinging the User?

Strict ARP Learning Is Enabled on the Switch, and a User Has Learned the Switch's ARP Entry. Why Cannot the Switch Learn the User ARP Entry by Pinging the User?

After strict ARP entry learning is enabled, the switch learns only from the Reply packets sent in response to locally originated ARP Request packets.

The firewall installed on a PC may prevent the PC from sending ARP Reply packets after the PC receives ARP Request packets, or the network adapter cannot reply with ARP Reply packets. If either of these situations is the case, the switch cannot receive the Response packet of the ARP Request packet it sends regardless of whether the switch sends ping packets to the user or the user sends data packets to the switch to trigger ARP Miss messages. Therefore, the switch cannot learn the user's ARP entry.

If this problem happens on only a few users, configure static ARP entries for the users; if the problem happens on most users, disable strict ARP learning on the switch.

Translation
Download
Updated: 2019-04-01

Document ID: EDOC1000178410

Views: 126024

Downloads: 25

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