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Cluster and storage switches

Migration requirements for Cisco Nexus 3232C cluster switches

Contributors netapp-jolieg
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Before you migrate to Cisco Nexus 3232C cluster switches. review the configuration information, port connections, and cabling requirements.

CN1610 migrate requirements

The cluster switches support the following node connections:

  • NetApp CN1610: ports 0/1 through 0/12 (10 GbE)

  • Cisco Nexus 3232C: ports e1/1-30 (40 or 100 or 4x10GbE)

The cluster switches use the following inter-switch link (ISL) ports.

  • NetApp CN1610: ports 0/13 through 0/16 (10 GbE)

  • Cisco Nexus 3232C: ports 1/31-32 (100GbE)

Note

You must use 4x10G breakout cables on the Cisco Nexus 3232C cluster switch.

The following table shows the cabling connections that are required at each stage as you make the transition from NetApp CN1610 switches to Cisco Nexus 3232C cluster switches:

Stage Description Required cables

Initial

CN1610 to CN1610 (SFP+ to SFP+)

4 SFP+ optical fiber or copper direct-attach cables

Transition

CN1610 to 3232C (QSFP to SFP+)

1 QSFP and 4 SFP+ optical fiber or copper breakout cables

Final

3232C to 3232C (QSFP to QSFP)

2 QSFP optical fiber or copper direct-attach cables

You must have downloaded the applicable reference configuration files (RCFs). The number of 10 GbE and 40/100 GbE ports are defined in the RCFs available on the Cisco® Cluster Network Switch Reference Configuration File Download page.

The ONTAP and NX-OS versions that are supported in this procedure are listed on the Cisco Ethernet Switches page.

The ONTAP and FASTPATH versions that are supported in this procedure are listed on the NetApp CN1601 and CN1610 Switches page.

CN5596 requirements

The cluster switches use the following ports for connections to nodes:

  • Ports e1/1-40 (10 GbE): Nexus 5596

  • Ports e1/1-30 (10/40/100 GbE): Nexus 3232C

    • The cluster switches use the following Inter-Switch Link (ISL) ports:

  • Ports e1/41-48 (10 GbE): Nexus 5596

  • Ports e1/31-32 (40/100 GbE): Nexus 3232C

    • The Hardware Universe contains information about supported cabling to Nexus 3232C switches:

  • Nodes with 10 GbE cluster connections require QSFP to SFP+ optical fiber breakout cables or QSFP to SFP+ copper breakout cables.

  • Nodes with 40/100 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:

  • Beginning: Nexus 5596 (SFP+ to SFP+)

    • 8x SFP+ fiber or copper direct-attach cables

  • Interim: Nexus 5596 to Nexus 3232C (QSFP to 4xSFP+ break-out)

    • 1x QSFP to SFP+ fiber break-out or copper break-out cables

  • Final: Nexus 3232C to Nexus 3232C (QSFP28 to QSFP28)

    • 2x QSFP28 fiber or copper direct-attach cables

      • On Nexus 3232C switches, you can operate QSFP/QSFP28 ports in either 40/100 Gigabit Ethernet or 4 x10 Gigabit Ethernet modes.

        By default, there are 32 ports in the 40/100 Gigabit Ethernet mode. These 40 Gigabit Ethernet ports are numbered in a 2-tuple naming convention. For example, the second 40 Gigabit Ethernet port is numbered as 1/2. The process of changing the configuration from 40 Gigabit Ethernet to 10 Gigabit Ethernet is called breakout and the process of changing the configuration from 10 Gigabit Ethernet to 40 Gigabit Ethernet is called breakin. When you break out a 40/100 Gigabit Ethernet port into 10 Gigabit Ethernet ports, the resulting ports are numbered using a 3-tuple naming convention. For example, the break-out ports of the second 40/100 Gigabit Ethernet port are numbered as 1/2/1, 1/2/2, 1/2/3, and 1/2/4.

      • On the left side of Nexus 3232C switches are 2 SFP+ ports, called 1/33 and 1/34.

      • You have configured some of the ports on Nexus 3232C switches to run at 10 GbE or 40/100 GbE.

        Note

        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.

      • You have done the planning, migration, and read the required documentation on 10 GbE and 40/100 GbE connectivity from nodes to Nexus 3232C cluster switches.

      • The ONTAP and NX-OS versions supported in this procedure are on the Cisco Ethernet Switches page.