Replacing a Node with the Same Switch Type

When you replace a node with the same switch type, for example when you replace an X460-G2-24t-GE4 switch with another X460-G2-24t-GE4 switch, you can continue to use the same stack configuration.

Note

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

All SummitStack switches that run EXOS 21.1 use the enhanced stacking protocol by default. When you are replacing a node in SummitStack configured with the enhanced stacking protocol, be sure to add configure stacking protocol enhanced before joining the switch to the active stack topology.

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 switch that is being replaced.
Note the following atributes of 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
Remove the stacking cables from the switch that is being replaced.
Replace the switch with the same type of switch.
Before connecting the new (replacement) switch to the stack, prepare the switch as follows:
1. Review the attributes needed for the switch you are installing, as listed in Step 1.
2. With the power off, install any required option cards as described in the ExtremeSwitching and Summit Switches: Hardware Installation Guide for Switches Using ExtremeXOS 21.1.
3. Power on the new node.
4. Use the show switch command to verify that the new node is using the same ExtremeXOS software version as the stack to 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 new node using the slot number noted in Step 1. For more information, (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 role it should have in the stack (see Configuring Master-Capability).
10. If the new 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 Configuring an Alternate IP Address and Gateway).
13. If the new node will use the SummitStack-V feature, configure the alternate stacking ports as described in Using Ethernet Ports for Stacking (SummitStack-V).
14. If the stack will use MPLS, enter the command configure stacking protocol enhanced.
  
  Note
  To use MPLS, the stack must contain only Summit X460-G2, X620, X670-G2, and X770 switches, and all switches must use the enhanced stacking protocol.
Connect the stacking cables and reboot the switch. The switch will join the stack topology.
For cabling instructions, see the ExtremeSwitching and Summit Switches: Hardware Installation Guide for Switches Using ExtremeXOS 21.1.
At the stack master node, enter synchronize stacking.

Note
If the master 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 master node was replaced, reboot the stack by entering the reboot command at the master node.
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.)

Published March 1, 2020prev | next

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