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Cluster and storage switches

Complete your migration from a two-node switchless cluster to a two-node switched cluster

Contributors netapp-yvonneo
PDFs

Complete the following steps to finalize the two-node switchless cluster migration to a two-node switched cluster on Nexus 3232C switches.

Steps

  1. Verify that all of the cluster interconnect ports are now reverted to their home ports:

    network interface show -role cluster

    The Is Home column should display a value of true for all of the ports listed in the Current Port column. If the displayed value is false, the port has not been reverted.

    Show example 
    cluster::*> network interface show -role cluster
 (network interface show)
            Logical    Status     Network            Current       Current Is
Vserver     Interface  Admin/Oper Address/Mask       Node          Port    Home
----------- ---------- ---------- ------------------ ------------- ------- ----
Cluster
            n1_clus1   up/up      10.10.0.1/24       n1            e4a     true
            n1_clus2   up/up      10.10.0.2/24       n1            e4e     true
            n2_clus1   up/up      10.10.0.3/24       n2            e4a     true
            n2_clus2   up/up      10.10.0.4/24       n2            e4e     true
4 entries were displayed.

  2. Verify that all of the cluster interconnect ports are in the up state:

    network port show -role cluster

  3. Display the cluster switch port numbers through which each cluster port is connected to each node:

    network device-discovery show

    Show example 
    cluster::*> network device-discovery show
            Local  Discovered
Node        Port   Device              Interface        Platform
----------- ------ ------------------- ---------------- ----------------
n1          /cdp
            e4a    C1                  Ethernet1/7      N3K-C3232C
            e4e    C2                  Ethernet1/7      N3K-C3232C
n2          /cdp
            e4a    C1                  Ethernet1/8      N3K-C3232C
            e4e    C2                  Ethernet1/8      N3K-C3232C

  4. Display discovered and monitored cluster switches:

    system cluster-switch show

    Show example 
    cluster::*> system cluster-switch show

Switch                      Type               Address          Model
--------------------------- ------------------ ---------------- ---------------
C1                          cluster-network    10.10.1.101      NX3232CV
Serial Number: FOX000001
Is Monitored: true
Reason:
Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 7.0(3)I6(1)
Version Source: CDP

C2                          cluster-network     10.10.1.102      NX3232CV
Serial Number: FOX000002
Is Monitored: true
Reason:
Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 7.0(3)I6(1)
Version Source: CDP 2 entries were displayed.

  5. Verify that switchless cluster detection changed the switchless cluster option to disabled:

    network options switchless-cluster show

  6. Verify the connectivity of the remote cluster interfaces:

ONTAP 9.9.1 and later

You can use the network interface check cluster-connectivity command to start an accessibility check for cluster connectivity and then display the details:

network interface check cluster-connectivity start and network interface check cluster-connectivity show

cluster1::*> network interface check cluster-connectivity start

NOTE: Wait for a number of seconds before running the show command to display the details.

cluster1::*> network interface check cluster-connectivity show
                                  Source           Destination      Packet
Node   Date                       LIF              LIF              Loss
------ -------------------------- ---------------- ---------------- -----------
n1
       3/5/2022 19:21:18 -06:00   n1_clus2         n2-clus1         none
       3/5/2022 19:21:20 -06:00   n1_clus2         n2_clus2         none

n2
       3/5/2022 19:21:18 -06:00   n2_clus2         n1_clus1         none
       3/5/2022 19:21:20 -06:00   n2_clus2         n1_clus2         none
All ONTAP releases

For all ONTAP releases, you can also use the cluster ping-cluster -node <name> command to check the connectivity:

cluster ping-cluster -node <name>

cluster1::*> cluster ping-cluster -node local
Host is n1
Getting addresses from network interface table...
Cluster n1_clus1 n1        e4a    10.10.0.1
Cluster n1_clus2 n1        e4e    10.10.0.2
Cluster n2_clus1 n2        e4a    10.10.0.3
Cluster n2_clus2 n2        e4e    10.10.0.4
Local = 10.10.0.1 10.10.0.2
Remote = 10.10.0.3 10.10.0.4
Cluster Vserver Id = 4294967293
Ping status:
....
Basic connectivity succeeds on 4 path(s)
Basic connectivity fails on 0 path(s) ................
Detected 9000 byte MTU on 32 path(s):
    Local 10.10.0.1 to Remote 10.10.0.3
    Local 10.10.0.1 to Remote 10.10.0.4
    Local 10.10.0.2 to Remote 10.10.0.3
    Local 10.10.0.2 to Remote 10.10.0.4
Larger than PMTU communication succeeds on 4 path(s) RPC status:
1 paths up, 0 paths down (tcp check)
1 paths up, 0 paths down (ucp check)

  1. If you suppressed automatic case creation, re-enable it by invoking an AutoSupport message:

    system node autosupport invoke -node * -type all -message MAINT=END

What's next?

Configure switch health monitoring.