CONTAP-170009: CRC Errors on XL710 40GbE ports after ONTAP reboot
Issue
- After an ONTAP reboot or upgrade, the node with XL710-based 40 Gigabit Ethernet cluster ports reports Cluster Network Degraded events.
- Example:
- [node1: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e8a on node node1 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).
- 40GbE ports (used for cluster or front-end data) are reporting CRC errors in the RECEIVE section of the ifstat command.
- interface e8a (0 hours, 5 minutes, 31 seconds) --
RECEIVE
Total frames: 23634 | Frames/second: 71 | Total bytes: 2019k
Bytes/second: 6100 | Total errors: 18292 | Errors/minute: 3316
Total discards: 0 | Discards/minute: 0 | Multi/broadcast: 92
Non-primary u/c: 0 | CRC errors: 16978 | Runt frames: 0
- The 40GbE port link might be flapping or might subsequently go down.