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


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


Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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).
Configuring MAC Address Flapping Detection to Quickly Detect Loops

Configuring MAC Address Flapping Detection to Quickly Detect Loops

If a loop occurs, MAC address flapping must have occurred on the failure point. You can use the MAC address flapping function to locate the loop.

Enable MAC address flapping detection to check whether a loop occurs in the following scenarios:

  • A MAC address entry alternates between appearing and disappearing.
  • Ping operations alternate between being successful and failing.
  • A high CPU usage alarm is generated.

MAC address flapping detection is easier to configure than many other loop detection technologies. Table 2-4 compares the loop detection technologies.

Table 2-4  Comparison of loop detection technologies




MAC address flapping detection

  • Checks all interfaces and VLANs on a device.
  • Requires only one command and is enabled by default.

After detecting a loop, the switch only reports alarms; it cannot eliminate the loop.

Loopback detection

  • Detects loops based on interfaces and VLANs.
  • Eliminates a loop after detecting it.

This function is not enabled by default and needs to be configured through commands.

Updated: 2018-12-24

Document ID: EDOC1100038339

Views: 169471

Downloads: 703

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