Adding a Node to a Stack

From the perspective of a new node, adding a node to an active topology is similar to bringing up a new stack.

Note

If the node being added is actually a replacement node for one that was previously removed, see Replacing a Node with the Same Switch Type or Replacing a Node with a Different Switch Type.

Review the general and model-specific configuration guidelines for the switch you are installing. These guidelines are described in ExtremeSwitching and Summit Switches: Hardware Installation Guide for Switches Using ExtremeXOS 21.1.

To add a node to a stack, follow these steps.

The examples in this procedures assume that your current stack has six switches and you are adding a new node at slot 7.

Before connecting the new switch to the stack, prepare it as follows:
1. 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.
2. Power on the new node.
3. 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.
4. 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.
5. Use the enable stacking command to enable stacking. Then decline the Easy Setup option.
6. Configure a unique slot number for the new node (see Configuring Slot Numbers).
  Select the lowest slot number that is not already in use in the stack to which you are adding this node. In the following example, the new node has MAC address 00:04:96:26:6c:92 and is assigned to slot 7.
```
Switch.3 # configure stacking node-address 00:04:96:26:6c:92 slot-number 7
This command will take effect at the next reboot of the specified node(s).
```
7. Configure the node's master-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 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).
9. Configure the node role priority to correspond to the priority it should have in the stack (see Configuring the Master, 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 Using Ethernet Ports for Stacking (SummitStack-V).
12. 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 to the new switch and reboot the switch.
The connections should be made such that the new switch appears in the natural position in the stack and in the slot. The following example adds a new node that becomes slot 7.
- Break the connection between slot 6 port 2 and slot 1 port 1.
- Connect slot 7 port 1 (the new switch) to slot 6 port 2.
- Connect slot 7 port 2 (the new switch) to slot 1 port 1.
For more information about cabling, , see ExtremeSwitching and Summit Switches: Hardware Installation Guide for Switches Using ExtremeXOS 21.1.
At the stack master node, enter the command synchronize stacking node-address node-address.
Reboot the new node by entering the command reboot node-address node-address].

Run the show stacking and show slot commands, as shown in the following example, to verify that the configuration is what you want.

Slot-1 Stack.14 # show stacking
Stack Topology is a Ring
Active Topology is a Ring
Node MAC Address    Slot  Stack State  Role     Flags
------------------  ----  -----------  -------  ---
*00:04:96:26:6a:f1  1     Active       Master   CA-
00:04:96:26:6c:93  2     Active       Standby  CA-
00:04:96:26:5f:4f  3     Active       Backup   CA-
00:04:96:1f:a5:43  4     Active       Standby  CA-
00:04:96:28:01:8f  5     Active       Standby  CA-
00:04:96:20:b2:5c  6     Active       Standby  CA-
00:04:96:26:6c:92  7     Active       Standby  CA-
* - Indicates this node
Flags:  (C) Candidate for this active topology, (A) Active Node
(O) node may be in Other active topology
#
Slot-1 stack.15 # show slot
Slots    Type                 Configured           State       Ports
--------------------------------------------------------------------
Slot-1   X670V-48x            X670V-48x            Operational   64
Slot-2   X480-48t(SSV80)      X480-48t(SSV80)      Operational   48
Slot-3   X480-48t(40G4X)      X480-48t(40G4X)      Operational   64
Slot-4   X460-48p             X460-48p             Operational   58
Slot-5   X670V-48x            X670V-48x            Operational   64
Slot-6   X670V-48x            X670V-48x            Operational   64
Slot-7   X670V-48x            X670V-48x            Operational   64
Slot-8                                             Empty         0

Published March 1, 2020prev | next

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