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S12700 V200R012C00 Configuration Guide - Ethernet Switching

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.
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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: 2019-01-18

Document ID: EDOC1100038103

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