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Management LIF on SVM accepts NFSv4 data traffics

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fas-systems
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nas
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Applies to

  • ONTAP 9
  • NFSv4

Issue

  • There is an NFS connection between management_lif_ip and client_ip
Example:
Cluster::> nfs connected-clients show -vserver svm_name

     Node: node-01
  Vserver: svm_name
  Data-Ip: management_lif_ip 
Client-Ip      Protocol Volume    Policy   Idle-Time    Local-Reqs Remote-Reqs
-------------- -------- --------- -------- ------------ ---------- ----------
Trunking
-------
client_ip  nfs4.2   volume_name default 0s       777466141    0 false

root@server-name1:~:> tcpdump -i interface_name -ne host management_lif_ip
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br-mgmt, link-type EN10MB (Ethernet), capture size 262144 bytes
07:34:24.841240 b4:client_mac > storage_mac, ethertype IPv4 (0x0800), length 33062: client_ip.931 > management_lif_ip.2049: Flags [P.], seq 3381759910:3381792906, ack 3969210307, win 24576, options [nop,nop,TS val 514697605 ecr 878318944], length 32996: NFS request xid 588699290 32992 getattr fh 0,2/53
07:34:24.841600 storage_mac > b4:client_mac, ethertype IPv4 (0x0800), length 182: management_lif_ip.2049 > client_ip.931: Flags [P.], seq 1:117, ack 32996, win 30841, options [nop,nop,TS val 878319376 ecr 514697605], length 116: NFS reply xid 588699290 reply ok 112 getattr NON 3 ids 0/1583349796 sz 4253230
  • There is no mount point with LIF management_lif_ip
root@server-name1:~:> mount | grep nfs
No mount point with management_lif_ip

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