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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R011C10

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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A Loop Occurs After the RRPP Configuration is Complete

A Loop Occurs After the RRPP Configuration is Complete

Fault Description

After the RRPP configuration is complete, a loop occurs.

This fault is commonly caused by one of the following:
  • RRPP is incorrectly configured.
  • The values of the Fail timers are set different on the devices of the ring.


  1. Check whether nodes are correctly configured on the RRPP ring.

    Run the display this command in the RRPP domain view on nodes of the ring to check RRPP configurations.

    Check whether nodes on the RRPP ring are located in the same domain, whether the control VLAN map the instance, and whether only one master node exists on the RRPP ring.
    • If a fault occurs in the preceding configurations, see RRPP Configuration.
    • If the preceding configurations are correct, go to step 2.

  2. Check whether the values of Fail timers are set the same on nodes of the RRPP ring.

    Run the display rrpp verbose domain domain-id command in any view to check detailed information about the RRPP configuration.

    If the values of the Fail timer are set different on nodes of the RRPP ring, see RRPP Configuration.

Updated: 2019-10-18

Document ID: EDOC1000178310

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