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csm.mismatchRemoteDevice ERROR events with BES-53248 switches

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ontap-9
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Applies to

  • ONTAP 9
  • Switched cluster configuration (including MetroCluster IP)
  • BES-53248 switch running EFOS Firmware version <3.9
  • Cisco Discovery Protocol (CDP)
  • ONTAP Cluster Session Manager (CSM)

Issue

  • ONTAP event log has csm.mismatchRemoteDevice ERROR events logged:

Thu Feb 17 11:52:05 +0100 [node-01: client_common_RPC: csm.mismatchRemoteDevice:error]: CSM connection between source LIF 1023 and destination address 169.254.13.13 might not be optimal for session 00001111deadbeef. The source is currently connected to - remote device and the destination is currently connected to myONTAPCluster remote device.

  • The IP-address referred within above error, i.e. 169.254.13.13, is a Cluster-LIF from another node in this cluster
  • The affected node which is reporting above error event, shows Csum Errors in CDP node statistics
  • After resetting the CDP node statistics, the Packets counter does increase by 1 Packet per Minute per Cluster-network-port along with Csum Errors raising at the same time as well

::> system node run -node node-01 -command cdpd show-stats
RECEIVE
Packets:           422k | Csum Errors:       422k | Unsupported Vers:    0
Invalid length:      0  | Malformed:           0  | Mem alloc fails:     0
Missing TLVs:        0  | Cache overflow:      0  | Received Own Adv:    0
Other errors:        0  | Unknown TLV:         0  | Ejected entries:     0
Eject failed:        0  | Bad Value:           0
TRANSMIT
Packets:         87956  | Xmit fails:          0  | No hostname:         0
Packet truncated:    0  | Truncate fails:      0  | Mem alloc fails:     0
Other errors:        0
OTHER
Init failures:       0

::> system node run -node node-01 cdpd zero-stats
1 entry was acted on.

::> system node run -node * cdpd show-stats
1 entry was acted on.
Node: node-01
RECEIVE
 Packets:             8  | Csum Errors:         8  | Unsupported Vers:    0
 Invalid length:      0  | Malformed:           0  | Mem alloc fails:     0
 Missing TLVs:        0  | Cache overflow:      0  | Received Own Adv:    0
 Other errors:        0  | Unknown TLV:         0  | Ejected entries:     0
 Eject failed:        0  | Bad Value:           0
TRANSMIT
 Packets:             0  | Xmit fails:          0  | No hostname:         0
 Packet truncated:    0  | Truncate fails:      0  | Mem alloc fails:     0
 Other errors:        0
OTHER
 Init failures:       0

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