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Cluster and storage switches

Prepare for migration from two-node switchless clusters to two-node switched clusters

Contributors netapp-yvonneo
PDFs

Follow these steps to prepare your two-node switchless cluster to migrate to a two-node switched cluster that includes Cisco Nexus 3232C cluster network switches.

Steps

  1. If AutoSupport is enabled on this cluster, suppress automatic case creation by invoking an AutoSupport message:

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

    x is the duration of the maintenance window in hours.

    Note

    The AutoSupport message notifies technical support of this maintenance task so that automatic case creation is suppressed during the maintenance window.

  2. Determine the administrative or operational status for each cluster interface:

    1. Display the network port attributes:

      network port show -role cluster

      Show example 
      cluster::*> network port show -role cluster
  (network port show)
Node: n1
                                                                       Ignore
                                                  Speed(Mbps) Health   Health
Port      IPspace      Broadcast Domain Link MTU  Admin/Oper  Status   Status
--------- ------------ ---------------- ---- ---- ----------- -------- -----
e4a       Cluster      Cluster          up   9000 auto/40000  -
e4e       Cluster      Cluster          up   9000 auto/40000  -        -
Node: n2
                                                                       Ignore
                                                  Speed(Mbps) Health   Health
Port      IPspace      Broadcast Domain Link MTU  Admin/Oper  Status   Status
--------- ------------ ---------------- ---- ---- ----------- -------- -----
e4a       Cluster      Cluster          up   9000 auto/40000  -
e4e       Cluster      Cluster          up   9000 auto/40000  -
4 entries were displayed.

    2. Display information about the logical interfaces and their designated home nodes:

      network interface show -role cluster

      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.

    3. Verify that switchless cluster detection is enabled using the advanced privilege command:

      network options detect-switchless-cluster show`

      Show example

      The output in the following example shows that switchless cluster detection is enabled:

      cluster::*> network options detect-switchless-cluster show
Enable Switchless Cluster Detection: true

  3. Verify that the appropriate RCFs and image are installed on the new 3232C switches and make any necessary site customizations such as adding users, passwords, and network addresses.

    You must prepare both switches at this time. If you need to upgrade the RCF and image software, you must follow these steps:

    1. Go to the Cisco Ethernet Switches page on the NetApp Support Site.

      Cisco Ethernet Switches

    2. Note your switch and the required software versions in the table on that page.

    3. Download the appropriate version of RCF.

    4. Select CONTINUE on the Description page, accept the license agreement, and then follow the instructions on the Download page to download the RCF.

    5. Download the appropriate version of the image software.

      Cisco Cluster and Management Network Switch Reference Configuration File download page

  4. Select CONTINUE on the Description page, accept the license agreement, and then follow the instructions on the Download page to download the RCF.

  5. On Nexus 3232C switches C1 and C2, disable all node-facing ports C1 and C2, but do not disable the ISL ports e1/31-32.

    For more information on Cisco commands, see the following list in the Cisco Nexus 3000 Series NX-OS Command References.

    Show example

    The following example shows ports 1 through 30 being disabled on Nexus 3232C cluster switches C1 and C2 using a configuration supported in RCF NX3232_RCF_v1.0_24p10g_24p100g.txt:

    C1# copy running-config startup-config
[] 100% Copy complete.
C1# configure
C1(config)# int e1/1/1-4,e1/2/1-4,e1/3/1-4,e1/4/1-4,e1/5/1-4,e1/6/1-4,e1/7-30
C1(config-if-range)# shutdown
C1(config-if-range)# exit
C1(config)# exit
C2# copy running-config startup-config
[] 100% Copy complete.
C2# configure
C2(config)# int e1/1/1-4,e1/2/1-4,e1/3/1-4,e1/4/1-4,e1/5/1-4,e1/6/1-4,e1/7-30
C2(config-if-range)# shutdown
C2(config-if-range)# exit
C2(config)# exit

  6. Connect ports 1/31 and 1/32 on C1 to the same ports on C2 using supported cabling.

  7. Verify that the ISL ports are operational on C1 and C2:

    show port-channel summary

    For more information on Cisco commands, see the following list in the Cisco Nexus 3000 Series NX-OS Command References.

    Show example

    The following example shows the Cisco show port-channel summary command being used to verify the ISL ports are operational on C1 and C2:

    C1# show port-channel summary
Flags: D - Down         P - Up in port-channel (members)
       I - Individual   H - Hot-standby (LACP only)        s - Suspended    r - Module-removed
       S - Switched     R - Routed
       U - Up (port-channel)
       M - Not in use. Min-links not met
--------------------------------------------------------------------------------
      Port-
Group Channel      Type   Protocol  Member Ports
-------------------------------------------------------------------------------
1     Po1(SU)      Eth    LACP      Eth1/31(P)   Eth1/32(P)

C2# show port-channel summary
Flags: D - Down         P - Up in port-channel (members)
       I - Individual   H - Hot-standby (LACP only)        s - Suspended    r - Module-removed
       S - Switched     R - Routed
       U - Up (port-channel)
       M - Not in use. Min-links not met
--------------------------------------------------------------------------------

Group Port-        Type   Protocol  Member Ports
      Channel
--------------------------------------------------------------------------------
1     Po1(SU)      Eth    LACP      Eth1/31(P)   Eth1/32(P)

  8. Display the list of neighboring devices on the switch.

    For more information on Cisco commands, see the following list in the Cisco Nexus 3000 Series NX-OS Command References.

    Show example

    The following example shows the Cisco command show cdp neighbors being used to display the neighboring devices on the switch:

    C1# show cdp neighbors
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater,
                  V - VoIP-Phone, D - Remotely-Managed-Device,                   s - Supports-STP-Dispute
Device-ID          Local Intrfce  Hldtme Capability  Platform      Port ID
C2                 Eth1/31        174    R S I s     N3K-C3232C  Eth1/31
C2                 Eth1/32        174    R S I s     N3K-C3232C  Eth1/32
Total entries displayed: 2
C2# show cdp neighbors
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater,
                  V - VoIP-Phone, D - Remotely-Managed-Device,                   s - Supports-STP-Dispute
Device-ID          Local Intrfce  Hldtme Capability  Platform      Port ID
C1                 Eth1/31        178    R S I s     N3K-C3232C  Eth1/31
C1                 Eth1/32        178    R S I s     N3K-C3232C  Eth1/32
Total entries displayed: 2

  9. Display the cluster port connectivity on each node:

    network device-discovery show

    Show example

    The following example shows the cluster port connectivity displayed for a two-node switchless cluster configuration:

    cluster::*> network device-discovery show
            Local  Discovered
Node        Port   Device              Interface        Platform
----------- ------ ------------------- ---------------- ----------------
n1         /cdp
            e4a    n2                  e4a              FAS9000
            e4e    n2                  e4e              FAS9000
n2         /cdp
            e4a    n1                  e4a              FAS9000
            e4e    n1                  e4e              FAS9000
What's next?

Configure your ports.