Skip to main content
NetApp Knowledge Base

Network congestion and unsynchronized log reported after shelf extension in MCC-IP

  1. Last updated
  2. Save as PDF
Views:
88
Visibility:
Public
Votes:
0
Category:
metrocluster
Specialty:
MetroCluster
Last Updated:

Applies to

  • Ontap 9
  • AFF-C250
  • Metrocluster IP (MCC-IP)
  • Shelf Extension
 

Issue

  • New NIC was installed for the shelf extension
  • High Latency observed for IOps after the change
  • Network congestion reported in EMS.log:

Thu Apr 10 13:53:40 +0200 [node-01:mccip_mirror_congestion_mgr_p: mcc.network.congestion:notice]: Network congestion detected. Action taken: Increased ic_timeout to 1200 msec

  • Unynchronized log repeatedly reported in EMS.log:
monitor.globalStatus.critical:Controller failover of node-01 is not possible: unsynchronized log.
 
  • Switch reports port errors for one of the interconnect ports

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.