Follow these steps to configure a new stack. Some
of the steps include references where you can find additional information.
Before configuring a new stack, do the
- Ensure that every switch, or
node, in the stack is running on the same partition (primary or secondary). To
find this information for any node, issue the command show switch and look
for the Image
Booted field in the output.
- Ensure that every switch in the
stack is running the same version and patch level of ExtremeXOS. To find
this information for any node, issue the command show switch and look
for the Primary
Ver or Secondary Ver
field in the output.
- If necessary, enable switch
license levels or configure license level restrictions for the nodes in the
- We recommend that you save the
configuration for each switch that will participate in the stack, so that you
can reinstate the configuration after the switch is no longer needed in the
New switches are
primary-capable by default.
Because stacks can consist of switches of
different series and different models, ExtremeXOS does not
restrict configuration settings based on the capabilities of any particular node in
the stack. Therefore, you are responsible for ensuring that your configuration
settings are appropriate for all switches in the stack.
The stack is ready to use.
Physically connect the switches (stack nodes)
using their stacking ports or alternate stacking ports.
Instructions for physically setting up the stack are provided in the hardware
installation guide for your switch.
If your stack includes X460-G2
switches, you must first install the versatile interface modules (VIMs) that
you plan to use.
Power on the switches.
On each switch, issue the command enable stacking-support.
This command configures the switch so that
it is capable of being added to a stack. It is not the same as enable stacking
which you will use later to build the stack.
You do not need to enable
stacking support on the ExtremeSwitching
series switches, since these switches have dedicated stacking
ports that are always enabled.
Ensure that all of the cabled stacking ports are
enabled for stacking:
On each node, issue the command show ports x,y, where x and y are the port
In the output, port state = E
means a port is enabled.
For any ports that are not enabled, issue the command enable ports x,y, where x and y are the port
If you enabled ports on any switches,
reboot those switches.
Save the configuration files.
Configure all switches in the
stack that will use the SummitStack-V, SummitStack-V160, SummitStack-V320,
SummitStack-V400, or MPLS features.
If the stack will use MPLS,
only the following switch types can act as primary and backup: Extreme
Switching X460-G2; X465, X590, or X695.
Configure switches that
will use alternate stacking ports as described in Using Ethernet Ports for Stacking (SummitStack-V Feature).
Reboot the switches
whose configurations you changed.
Log in, using the console port,
to the switch that will be the primary.
Issue the command show stacking stack-ports to verify
that the stacking ports are properly connected.
All of the ports should show a state of
In the following example,
two of the ports are not in an Operational
which means they are not connected
* switch1 # show stacking stack-ports
Stack Topology is a Ring
Slot Port Select Node MAC Address Port State Flags Speed
---- ---- ------ ----------------- ----------- ----- -----
*- 1 27 00:04:96:9c:e4:39 Operational C- 10G
*- 2 28 00:04:96:9c:e4:39 Operational CB 10G
- 1 27 00:04:96:9b:c1:34 Operational CB 10G
- 2 28 00:04:96:9b:c1:34 Operational C- 10G
- 1 15 00:04:96:9e:5c:76 Link Down C- 10G
- 2 16 00:04:96:9e:5c:76 No-Neighbor C- 10G
- 1 15 00:04:96:9c:53:b6 Operational C- 10G
- 2 16 00:04:96:9c:53:b6 Operational C- 10G
* - Indicates this node
Flags: (C) Control path is active, (B) Port is Blocked
When a port displays a
state other than Operational
, use the following tips to troubleshoot:
- If the state displays as Link Down,
check the port's physical connections.
- Verify that the port is using the same
stacking technology, for example SummitStack-V160, as the rest of the
ports in the stack.
Verify that all nodes in the stack
have stacking disabled.
Note that, even though you enabled stacking-support
in step 3
, it is necessary that stacking be disabled
before the stack is actually
Issue the command show stacking
* switch1 # show stacking configuration
Stack MAC in use: <none>
Node Slot Alternate Alternate
MAC Address Cfg Cur Prio Mgmt IP / Mask Gateway Flags Lic
------------------ --- --- ---- ------------------ --------------- --------- ---
*00:04:96:9c:e4:39 1 - Auto <none> <none> -c-----Nn --
00:04:96:9b:c1:34 1 - Auto <none> <none> -c-----Nn --
00:04:96:9e:5c:76 1 - Auto <none> <none> -c-----Nn --
00:04:96:9c:53:b6 1 - Auto <none> <none> -c-----Nn --
* - Indicates this node
Flags: (C) master-Capable in use, (c) master-capable is configured,
(E) Stacking is currently Enabled, (e) Stacking is configured Enabled,
(M) Stack MAC in use, (m) Stack MACs configured and in use are the same,
(i) Stack MACs configured and in use are not the same or unknown,
(N) Enhanced protocol is in use, (n) Enhanced protocol is configured,
(-) Not in use or not configured
License level restrictions: (C) Core, (A) Advanced edge, or (E) Edge in use,
(c) Core, (a) Advanced edge, or (e) Edge configured,
(-) Not in use or not configured
If a node is enabled for stacking (shown
by a capital letter E in the Flags column), issue the command disable stacking node-address mac_address for that
Then reboot the switch.
From the node that will be the
primary, issue the command enable stacking.
The following prompt
X440G2-24t-10G4.4 # enable stacking
You have not yet configured all required stacking parameters.
Would you like to perform an easy setup for stacking operation? (y/N)
Enter y to proceed
with Easy Setup (strongly recommended), or enter n to configure the stack
- When you enter y for
Easy Setup, you are prompted to confirm your
Executing "configure stacking easy-setup" command...
For every node in the 4-node stack, this command will:
- enable stacking
- configure a stack MAC address
- choose and configure a slot number (this node will be assigned to slot 1)
- configure redundancy to minimal (slot 1 will be the master node)
- configure the stacking protocol to enhanced
Upon completion, the stack will automatically be rebooted into the new configuration.
Warning: If stacking is already configured, this command will alter that configuration.
Do you wish to proceed? (y/N)
y again to confirm. All of the switches reboot
automatically and form a stack in which one switch is the primary,
one is the backup, and the rest are standby nodes. Easy Setup
configures all other required stacking parameters for every switch
in the stack.
- If you forgo Easy Setup by entering n in response to the
prompt (not recommended), you will need to configure the stack manually.
Instead of continuing with step 11, follow the steps in Manually Configuring a Stack.
Verify the configuration,
following the instructions in Verifying the Configuration.
Save the ExtremeXOS configuration to every active node in the stack.
On the primary node, issue the command
config_name, where config_name is a
descriptive name for this configuration.
configuration parameters are saved in a file called
config_name.cfg to the NVRAM of each node.