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Troubleshooting “%FABRIC-INGRESSQ-6-LINK_DOWN” on CRS

Introduction

Customer found 0/4/cpu0 have many ingressq asic error, after checked, that should match a know DDTS: CSCuu86430. The issue maybe was triggered when CRS-3 MSCs(140G) interactive with a CRS-X(400G) fabric. After trigger the issue, will found CRS-X’s fabric link of s1rx flapping. Have reload SMU under 514.

For this article, will show how to troubleshooting the fabric link flapping.

Troubleshooting

1. Customer found follow alarm:

LC/0/4/CPU0:Nov  8 00:30:26.752 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 
LC/0/1/CPU0:Nov  8 00:37:59.734 : fabricq_mgr[178]: %FABRIC-FABRICQ-3-PCL_PKT : Minor error in PCL of fabricq asic 0. PCL UC Lost Packet: CAOPCI: 0x18 (0/4, UC, LO):Lost Packet count= 1 
LC/0/4/CPU0:Nov  8 00:37:59.734 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 
LC/0/4/CPU0:Nov  8 10:27:27.265 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 
LC/0/4/CPU0:Nov  8 11:06:08.181 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 
LC/0/1/CPU0:Nov  8 11:08:46.132 : fabricq_mgr[178]: %FABRIC-FABRICQ-3-PCL_PKT : Minor error in PCL of fabricq asic 0. PCL UC Partial Packet: CAOPCI: 0x18 (0/4, UC, LO) 
LC/0/4/CPU0:Nov  8 11:18:34.733 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 
LC/0/4/CPU0:Nov  8 11:28:44.350 : ingressq[235]: %FABRIC-INGRESSQ-6-LINK_DOWN : Ingressq: Link 26 of Asic Instance 0 has been administratively shut down. 

完整阅读

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