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Replacing a Node with the Same Switch Type

When you replace a node with the same switch type, for example when you replace a Summit with an identical Summit, you can continue to use the same stack configuration. The procedure in this section works only when the old and new nodes have identical switch types.
Note

Note

If you are replacing a node with a different switch type, you must change the stack configuration before the new node can operate. For more information, see Replacing a Node with a Different Switch Type.

The Summit Stack X440, X450-G2, X460, X460-G2, X480, X670, X670-G2, and X770 (configured via configure stacking easy-setup) use the enhanced stacking protocol by default. The Summit X450-G2, X770, X670-G2 and X460-G2 support only enhanced mode. While replacing a node in Summit Stack X440, X460, X480, X670, or X770 configured with the enhanced stacking protocol, be sure to add configure stacking protocol enhanced before joining active stack topology.

To replace a node with an identical switch type:

  1. Use the show switch, show licenses, and show stacking configuration commands to display configuration information for the node to be replaced.
    Note the following about the switch you are replacing:
    • ExtremeXOS software version
    • Partition on which the switch is booted
    • Effective license level for the stack
    • Slot number
    • Stacking protocol: standard or enhanced?
    • Master-capable feature configuration
    • Node priority
    • Alternate gateway IP address
  2. Remove the stack links from the node to be replaced.
  3. Replace the node with the same type of node.
  4. Before connecting the replacement switch to the stack, prepare the switch as follows:
    1. Review the guidelines for the switch you are installing. These guidelines are described in Step 1.
    2. With the power off, install any required option cards as described in the Summit Family Switches Hardware Installation Guide.
    3. Power on the replacement node.
    4. Use the show switch command to verify that the replacement node is using the same ExtremeXOS software version as the stack in which it will be added. If it is not using the correct version, install the correct version.
    5. Use the show switch command to verify that the ExtremeXOS software is booted on the same image (primary or secondary) on which the stack is booted.

      If the new node is booted on a different image, change the image before you continue.

    6. Use the enable stacking command to enable stacking; then decline the Easy Setup option.
    7. Configure the slot number for the replacement node using the slot number noted in .Replacing a Node with the Same Switch Type 1 (see Configuring Slot Numbers).
    8. If the replaced node was using the enhanced stacking protocol, use the configure stacking protocol command to select that protocol.
    9. Configure the node's master-capability to correspond to the value noted (see Configuring Master-Capability).
    10. If the replacement node will operate as a master-capable node, use the show licenses command to verify that the enabled license level is at the same level as the master-capable nodes in the stack.

      If necessary, configure the license-level restriction of the new node to be same as the other master-capable nodes in the stack (see Managing Licenses on a Stack).

    11. Configure the node role priority to correspond to the priority it should have in the stack (see Configuring the Master, Backup, and Standby Roles).
    12. Configure an alternate IP address and gateway (see About Configuring an Alternate IP Address and Gateway).
    13. If the new node is a Summit X670V switch with a VIM4-40G4X option card, configure the option card ports as described in Configuring Stacking Port Operation with the VIM4-40G4X Option Card.
    14. If the new node will use the SummitStack-V feature, configure the alternate stack ports as described in Using Ethernet Ports for Stacking (SummitStack-V).
    15. If the stack will use MPLS, the stack must contain only Summit X460, X480, X670, X670G2, and X770 switches, and you must configure all stack switches to use the enhanced stacking protocol as described in Selecting the Stacking Protocol.
  5. Connect the stack links and reboot the node. The switch should join the stack topology.
    For cabling instructions, see the Summit Family Switches Hardware Installation Guide.
  6. At the stack master node, run the synchronize stacking {node-address node_address | slot slot_number} command and do not specify either a node-address or a slot.
    Note

    Note

    If the master node was replaced, log into another stack node before entering this command.
  7. Reboot the new node by entering the command: reboot slot [slot-number | node-address node-address].
    Note

    Note

    If the master node was replaced, reboot the stack by entering the reboot command at the master node.
  8. (Optional) Run the show stacking configuration command and verify that the configuration is what you want.
    Note

    Note

    To verify that the new node became operational, enter the show slot {slot {detail} | detail } command. If the slot shows a Mismatch state, the node was replaced with a different type of switch (see Replacing a Node with a Different Switch Type.)
Published March 2020prev | next

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