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Cluster and storage switches

Migration requirements

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If you have a two-node switchless cluster, review this procedure for the applicable requirements to migrate to a two-node switched cluster.

Note

The procedure requires the use of both ONTAP commands and Cisco Nexus 3000 Series Switches commands; ONTAP commands are used unless otherwise indicated.

For more information, see:

Port and node connections

Make sure you understand the port and node connections and cabling requirements when you migrate to a two-node switched cluster with Cisco Nexus 3132Q-V cluster switches.

  • The cluster switches use the Inter-Switch Link (ISL) ports e1/31-32.

  • The Hardware Universe contains information about supported cabling to Nexus 3132Q-V switches:

    • The nodes with 10 GbE cluster connections require QSFP optical modules with breakout fiber cables or QSFP to SFP+ copper break-out cables.

    • The nodes with 40 GbE cluster connections require supported QSFP/QSFP28 optical modules with fiber cables or QSFP/QSFP28 copper direct-attach cables.

    • The cluster switches use the appropriate ISL cabling: 2x QSFP28 fiber or copper direct-attach cables.

  • On Nexus 3132Q-V, you can operate QSFP ports as either 40 Gb Ethernet or 4x10 Gb Ethernet modes.

    By default, there are 32 ports in the 40 Gb Ethernet mode. These 40 Gb Ethernet ports are numbered in a 2-tuple naming convention. For example, the second 40 Gb Ethernet port is numbered as 1/2. The process of changing the configuration from 40 Gb Ethernet to 10 Gb Ethernet is called breakout and the process of changing the configuration from 10 Gb Ethernet to 40 Gb Ethernet is called breakin. When you break out a 40 Gb Ethernet port into 10 Gb Ethernet ports, the resulting ports are numbered using a 3-tuple naming convention. For example, the breakout ports of the second 40 Gb Ethernet port are numbered as 1/2/1, 1/2/2, 1/2/3, and 1/2/4.

  • On the left side of Nexus 3132Q-V is a set of four SFP+ ports multiplexed to the first QSFP port.

    By default, the RCF is structured to use the first QSFP port.

    You can make four SFP+ ports active instead of a QSFP port for Nexus 3132Q-V by using the hardware profile front portmode sfp-plus command. Similarly, you can reset Nexus 3132Q-V to use a QSFP port instead of four SFP+ ports by using the hardware profile front portmode qsfp command.

  • Make sure you configured some of the ports on Nexus 3132Q-V to run at 10 GbE or 40 GbE.

    You can break-out the first six ports into 4x10 GbE mode by using the interface breakout module 1 port 1-6 map 10g-4x command. Similarly, you can regroup the first six QSFP+ ports from breakout configuration by using the no interface breakout module 1 port 1-6 map 10g-4x command.

  • The number of 10 GbE and 40 GbE ports are defined in the reference configuration files (RCFs) available on the Cisco ® Cluster Network Switch Reference Configuration File Download page.

Before you begin

  • Configurations properly set up and functioning.

  • Nodes running ONTAP 9.4 or later.

  • All cluster ports in the up state.

  • The Cisco Nexus 3132Q-V cluster switch is supported.

  • The existing cluster network configuration has:

    • The Nexus 3132 cluster infrastructure that is redundant and fully functional on both switches.

    • The latest RCF and NX-OS versions on your switches.

      The Cisco Ethernet Switches page has information about the ONTAP and NX-OS versions supported in this procedure.

    • Management connectivity on both switches.

    • Console access to both switches.

    • All cluster logical interfaces (LIFs) in the up state without being migrated.

    • Initial customization of the switch.

    • All the ISL ports enabled and cabled.

In addition, you must plan, migrate, and read the required documentation on 10 GbE and 40 GbE connectivity from nodes to Nexus 3132Q-V cluster switches.

About the examples used

The examples in this procedure use the following switch and node nomenclature:

  • Nexus 3132Q-V cluster switches, C1 and C2.

  • The nodes are n1 and n2.

Note

The examples in this procedure use two nodes, each using two 40 GbE cluster interconnect ports e4a and e4e. The Hardware Universe has details about the cluster ports on your platforms.

This procedure covers the following scenarios:

  • n1_clus1 is the first cluster logical interface (LIF) to be connected to cluster switch C1 for node n1.

  • n1_clus2 is the first cluster LIF to be connected to cluster switch C2 for node n1.

  • n2_clus1 is the first cluster LIF to be connected to cluster switch C1 for node n2.

  • n2_clus2 is the second cluster LIF to be connected to cluster switch C2 for node n2.

  • The number of 10 GbE and 40 GbE ports are defined in the reference configuration files (RCFs) available on the Cisco ® Cluster Network Switch Reference Configuration File Download page.

Note

The procedure requires the use of both ONTAP commands and Cisco Nexus 3000 Series Switches commands; ONTAP commands are used unless otherwise indicated.

  • The cluster starts with two nodes connected and functioning in a two-node switchless cluster setting.

  • The first cluster port is moved to C1.

  • The second cluster port is moved to C2.

  • The two-node switchless cluster option is disabled.

What's next?

Prepare for migration.