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snapmirror failing after Ontap upgrade as one of the port is not reachable

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Category:
ontap-9
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DP
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Applies to

  • ONTAP 9
  • SnapMirror

Issue

  • Snapmirror failing for volumes residing on one nodes with below error.
Failed to create snapshot snapmirror.e180b5b4-896a-11e8-a2cf-00a098d93948_2162351280.2025-03-31_123500 on volume SVM:vol. (CSM: Connection aborted.)
  • Cluster peer is in partial state and unreachable for the problematic node.
source::> cluster peer show
Peer Cluster Name         Cluster Serial Number Availability   Authentication
------------------------- --------------------- -------------- --------------
destination                   1-80-0xxxx        Partial        ok
  • All the cluster ports hosting IC LIF are admin/ operationally "UP"
  • l2 ping on the port to confirm if the issue is at l2 or l3 network and found no response on the same.
  • Capture the Packet trace to confirm there are no responses received from switch for the ARP request sent.
28 2025-04-01 10:35:59.261455 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
29 2025-04-01 10:36:00.262531 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
30 2025-04-01 10:36:01.263414 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
31 2025-04-01 10:36:02.264488 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
32 2025-04-01 10:36:03.265425 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
33 2025-04-01 10:36:04.266758 NetApp_d9:2d:1e Broadcast  ARP   Who has 20.xx.xx.53? Tell 20.xx.xx.54
  • The port status showed there are lot of discards reported on the port at transmit which indicates the switch is not accepting the packets.
- interface  e0c  (153 days, 0 hours, 40 minutes, 11 seconds) --
 
RECEIVE
 
Total discards:  19069  | Queue overflow:  19069  | Multi/broadcast:   661k
Collisions:          0  | Xon:                 0  | Xoff:                0
Jumbo:           39271m | Cfg Up to Downs:     0  | TSO non-TCP drop:    0
  • Network team validated port Configuration and found no issues, however confirmed no packets are received at the switch port.

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