Selects a node in the stack whose factory assigned MAC address is to be used to form the stack MAC address.
The formed address is then configured on every node in the stack topology.
| node-address |
Specifies the MAC address of a node in the stack. To view the MAC addresses for all nodes in a stack, enter the show stacking command. |
| slot-number |
Specifies the slot number of an active node whose factory MAC address is to be used to form the stack MAC address. To view the slot numbers, enter the show stacking command. |
No stack MAC selection is configured.
You must select a node whose factory assigned MAC address can be used to form a MAC address that represents the stack as a whole. The system forms the stack MAC address by setting the Universal / Local bit in the specified MAC address. This means that the stack MAC address is a locally administered address, and not the universal MAC address assigned to the selected node.
If you do not specify any node, the stack MAC address is formed from the factory assigned MAC address of the node from which you are running the command.
This command takes effect only after you restart the node. The following message appears after you run the command:
This command will take effect at the next reboot of the specified node(s).If a stack node that has just joined the active topology detects that its stack MAC address is not configured or is different than the stack MAC address in use, it logs the following message at the Error log level:
The stack MAC address is not correctly configured on this node. The stack can not operate properly in this condition. Please correct and reboot.If you have not configured (or inconsistently configured) the stack MAC address you might encounter difficulty in diagnosing the resulting problems. Whenever the master node (including itself) detects that one or more nodes in its active topology do not have the correct or any stack MAC address configured, it displays the following message to the console every five minutes until you configure a MAC address and restart the node(s):
The stack MAC address is either not configured or its configuration is not consistent within the stack. The stack can not operate properly in this condition. Please correct and reboot.To select the node to which you have logged in to supply the MAC address for stack MAC address formation:
configure stacking mac-address
To select a node other than the one to which you are logged in to supply the MAC address for stack MAC address formation:
configure stacking node-address 00:04:96:26:6b:ed mac-address
To select an active node to supply the MAC address for stack MAC address formation:
configure stacking slot 4 mac-address
This command was first available in ExtremeXOS 12.0.
This command is available with all licenses and platforms that support the SummitStack feature. For information about which licenses and platforms support the SummitStack feature, see the ExtremeXOS and Switch Engine 31.7 Feature License Requirements document.