Replacing a Node with the Same Switch Type

Tip

For an easier, automatic way to add/replace a node, see Automatically Adding or Replacing Nodes in a Stack.

When you replace a node with the same switch type, for example when you replace a 5420-24T-4XE switch with another5420-24T-4XE switch, you can continue to use the same stack configuration.

If you are replacing a node with a different switch type, you must change the stack configuration before the new node can operate. Follow the procedure in Replacing a Node with a Different Switch Type.

Note

If the stack will use MPLS, only the 5520 can act as primary and backup.

To replace a node with an identical switch type, follow these steps:

Use the show switch, show licenses, and show stacking configuration commands to display configuration information for the node that is being replaced.
Note the following attributes of the node you are replacing:
- ExtremeXOS software version
- Partition on which the switch is booted
- Effective license level for the stack
- Slot number
- primary-capable feature configuration
- Node priority
- Alternate gateway IP address
Remove the stacking cables from the node that is being replaced.
Replace the node with another switch of the same type.
Before connecting the new (replacement) switch to the stack, prepare the switch as follows:
1. Review the attributes needed for the node you are installing, as listed in step 1.
2. With the power off, install any required option cards as described in the hardware installation guide for your switch.
3. Power on the new node.
4. Use the show switch command to verify that the new node's software is compatible with the stack:
  - The new node must run the same ExtremeXOS version as the stack. Install the correct version if necessary.
  - The ExtremeXOS software must be booted on the same image (primary or secondary) as the stack. If the new node is booted on a different image, change the image before you continue.
5. Use the enable stacking command to enable stacking. Then decline the Easy Setup option.
6. Configure the slot number for the new node using the slot number noted in step 1. For more information, see Configuring Slot Numbers.
7. Configure the node's primary-capability to correspond to the role it should have in the stack (see Configuring Master-Capability).
8. If the new node will operate as a primary-capable node, use the show licenses command to verify that the enabled license level is at the same level as the primary-capable nodes in the stack.
  If necessary, configure the license-level restriction of the new node to be same as the other primary-capable nodes in the stack (see Managing Licenses on a Stack).
9. Configure the node role priority to correspond to the priority it should have in the stack (see Configuring the Primary, Backup, and Standby Roles).
10. Configure an alternate IP address and gateway (see Configuring an Alternate IP Address and Gateway).
11. If the new node will use the SummitStack-V feature, configure the alternate stacking ports as described in Use Ethernet Ports for Stacking (SummitStack-V Feature).
Connect the stacking cables and reboot the node. The new node will join the stack topology.
For cabling instructions, see the hardware installation guide for your switch.
At the stack primary node, enter synchronize stacking.

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

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

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).