High latency post Ontap upgrade with CX5 ethernet ports
Applies to
- Ontap 9
- Dual 40G/100G Ethernet Controller CX5
Issue
- Post upgrading from 9.12.1P2 to 9.12.1P15 Ontap to high latency is seen on multiple FlexGroups and FlexVols volumes.
- Most of the latency is accounted at the cluster interconnect layer.
- High count of CRC errors is seen on a cluster port of one of the Node in the cluster.