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LIF is unable to reach gateway

  1. Last updated
    Mar 14, 2025
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Category:
ontap-9
Specialty:
NAS
Last Updated:
3/14/2025, 9:35:04 AM

Applies to

  • ONTAP 9
  • Networking
  • CIFS

Issue

  • CIFS shares are inaccessible.
  • LIF is unable to reach gateway, it is timing out.
  • Below errors reported in EMS :

::> event log show
Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
7/5/2024 13:21:26   Node-01 ERROR         dns.server.timed.out: DNS server 172.xx.xx.xx did not respond to vserver = SVM within timeout interval.
7/5/2024 13:21:01   Node-01 ERROR         secd.cifsAuth.problem: vserver (SVM) General CIFS authentication problem. Error: Get DC connection latency times procedure failed
  ...
  [  6067] TCP connection to ip 172.xx.xx.xx, port 445 failed: No route to host.
  [  6069] Unable to connect to NetLogon service on cyinazcorpadc.corp.cyient.com (Error: RESULT_ERROR_SPINCLIENT_UNABLE_TO_RESOLVE_SERVER)
  [  6069] TCP connection to ip 172.xx.xx.xx, port 445 failed: No route to host.
  [  6071] Unable to connect to NetLogon service on cyinklkadc.corp.cyient.com (Error: RESULT_ERROR_SPINCLIENT_UNABLE_TO_RESOLVE_SERVER)
  [  6072] TCP connection to ip 172.xx.xx.xx, port 445 failed: No route to host.

  • Vserver has a properly configured route:

Example:

Cluster::> network route show -vserver VS1
Vserver             Destination     Gateway         Metric
------------------- --------------- --------------- ------
VS1
                    0.0.0.0/0       192.168.1.1     20

Note: Name services fail due to multiple default gateways with the same metric - NetApp Knowledge Base

  • Interface is in the same subnet as gateway interface:

Example: 

Cluster::> network interface show -vserver VS1
            Logical    Status     Network            Current       Current Is
Vserver     Interface  Admin/Oper Address/Mask       Node          Port    Home
----------- ---------- ---------- ------------------ ------------- ------- ----
VS1
            VS1-LIF1
                         up/up    192.168.1.50/24    Cluster-01    a0a-100 true

Note: In the above examples, Gateway is configured to be on 192.168.1.1, LIF is configured for 192.168.1.0/24 network, indicating it should be in the same subnet, thus a subnetting mistake is ruled out.

  • Port of the LIF is healthy

Example:

::> network port show
Port      IPspace      Broadcast Domain Link MTU Admin/Oper   Status
--------- ------------ ---------------- ---- ---- ----------- --------
a0a       Default      vlan101          up   1500 auto/10000  healthy
a0a-100   Default      vlan101          up   1500 -/-         healthy

 

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