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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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SEP/3/PREEMPT_REQ_FAIL

SEP/3/PREEMPT_REQ_FAIL

Message

SEP/3/PREEMPT_REQ_FAIL:Preemption failed because the number of preempt request packets reached the upper limit. (preempt number=[ULONG])

Description

Preemption failed because the number of preemption request packets reached the upper limit.

Parameters

Parameter Name Parameter Meaning
preempt number Number of preemption request packets

Possible Causes

Cause 1: Failed to send preemption request packets.

Cause 2: The peer device failed to receive preemption request packets.

Procedure

  1. Cause 1: Failed to send preemption request packets.

    The chip of the device may fail. In this case, collect configurations and log messages, and then contact technical support personnel.

  2. Cause 2: The remote device failed to receive preemption request packets.
    1. Run the reset sep interface interface-type interface-number statistics command on the local and remote devices to clear the statistics about the SEP protocol packets on the specified interface on the SEP segment.
    2. Run the display sep interface interface-type interface-number [ verbose ] command on the local device to view the PREEMPT REQ TLV field. Check whether there is count displayed in the tx sub-field.

      • If there is count displayed in the tx sub-field in the PREEMPT REQ TLV field, it indicates that the local device has sent preemption request packets. In this case, go to c.
      • If there is no count displayed in the tx sub-field in the PREEMPT REQ TLV field, it indicates that the local device has not sent preemption request packets. In this case, go to e.

    3. Run the display sep interface interface-type interface-number [ verbose ] command on the remote device to view the PREEMPT ACK TLV field. Check whether there is count displayed in the rx sub-field.

      • If there is count displayed in the rx sub-field in the PREEMPT ACK TLV field, it indicates that the remote device has received preemption request packets. In this case, go to e.
      • If there is no count displayed in the rx sub-field in the PREEMPT ACK TLV field, it indicates that the remote device has not received preemption request packets. In this case, go to d.

    4. Check whether the link frequently alternates between Up and Down states.

      • If the link frequently alternates between Up and Down states, replace the hardware or optical fibers.
      • If the link status remains unchanged, go to e.

    5. Collect configurations and log messages, and then contact technical support personnel.
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Updated: 2019-08-21

Document ID: EDOC1000142069

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