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L2 Reachability issues on cluster ports with ONTAP 9.13.1 or later

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Applies to

Issue

  • Errors similar to the following are reported for one of the cluster ports:

Tue Jan 23 18:06:43 +0900 [Node-01: vifmgr: vifmgr.reach.noreach:notice]: Network port e4e on node Node-01 cannot reach its expected broadcast domain Cluster:Cluster. No other broadcast domains appear to be reachable from this port.
Tue Jan 23 18:06:44 +0900 [Node-01: vifmgr: vifmgr.port.monitor.failed:error]: The "l2_reachability" health check for port e4e (node Node-01) has failed. The port is operating in a degraded state.

  • The following call home alert is seen:

Tue Jan 23 18:06:44 +0900 [Node-01: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Insufficient L2 Reachability - Insufficient L2 Reachability detected from cluster port e4e on node Node-01.

  • After some time the reachability will be restored:
Tue Jan 23 18:06:57 +0900 [Node-01: vifmgr: vifmgr.reach.ok:notice]: Network port e4e on node Node-01 can reach its expected broadcast domain Cluster:Cluster. No other broadcast domains appear to be reachable from this port.
Tue Jan 23 18:07:14 +0900 [Node-01: vifmgr: vifmgr.port.monitor.passed:notice]: The "l2_reachability" health check for port e4e (node Node-01) has passed.
Tue Jan 23 18:07:14 +0900 [Node-01: vifmgr: vifmgr.portHealthy:notice]: The health status of port e4e (node Node-01) has changed from degraded to healthy. This port can now be used for hosting LIFs.

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