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The MAC addresses of ifgrp ports change after an ONTAP reboot or upgrade

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596
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Category:
ontap-9
Specialty:
nas
Last Updated:
12/4/2024, 7:24:31 AM

Applies to

  • ONTAP 9.2 or later
  •  ifgrp (Interface Group) 

Issue

  • The MAC addresses of ifgrp ports change after ONTAP upgrade. 
  • A MAC address change can disrupt network connectivity if a security access control list (ACL) only allows traffic from certain MAC addresses.
    • Before upgrade

Cluster11::> ifgrp show
         Port       Distribution                   Active
Node     IfGrp      Function     MAC Address       Ports   Ports
-------- ---------- ------------ ----------------- ------- -------------------
Cluster1-01
         a0a        ip           02:a0:98:9a:80:fe partial e2a, e2b
Cluster1-02
         a0a        ip           02:a0:98:9b:7d:b6 partial e2a, e2b
2 entries were displayed.

  • After upgrade:

Cluster11::> ifgrp show
         Port       Distribution                   Active
Node     IfGrp      Function     MAC Address       Ports   Ports
-------- ---------- ------------ ----------------- ------- -------------------
Cluster1-01
         a0a        ip           02:a0:98:9a:81:09 partial e2a, e2b
Cluster1-02
         a0a        ip           02:a0:98:9b:7d:e1 partial e2a, e2b
2 entries were displayed.

 

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