Planning To Create Your Stack - Extreme Networks ExtremeSwitching X440-G2 Series Hardware Installation Manual

Table 60: List of Stacking Terms (continued)
Term
Data ports
Failover
Hitless failover
Node address
Node role election
Node role election priority
Operational node
System uptime
Stack segment
Stack state
Easy Setup

Planning to Create Your Stack

Use the information in the following topics to plan the physical makeup of your stack – switches,
versatile interface modules (VIMs), and cables – and the stacking protocols you will use. Included are:
•
Guidelines and other information for each switch model in your stack
ExtremeSwitching and Summit Switches: Hardware Installation Guide
Description
The set of ports on a stackable switch that are available for connection to your
data networks. Such ports can be members of a user-configured VLAN or trunk
group. They can be used for Layer 2 and 3 forwarding of user data traffic, for
mirroring, or other features you can configure. Data ports are different from
stacking ports.
The process of changing the backup node to the master node when the original
master node has failed.
When a master node fails, if a backup node is present, and if that node has
completed its initial synchronization with the master node, then the backup node
assumes the role of master node. The standby nodes continue their operation and
their data ports do not fail.
A failover in which all data ports in the stack, except those of the failing master
node, continue normal operation when the master node fails.
The unique MAC address that is factory-assigned to each node.
The process that determines the role for each node. The election takes place
during initial stack startup and elects one master node and one backup node. An
election also takes place after a master node failover, when a new backup node is
elected from the remaining standby nodes.
A priority assigned to each node, to be used in node role election. The node with
the highest node role election priority during a role election becomes the master
node. The node with the second highest node role election priority becomes the
backup.
A node that has achieved operational state as a card in a slot. The operational state
can be displayed using the
show slot {slot {detail} |
command.
detail }
The amount of time that has passed since the last node role election. You can
display the system uptime by entering the
command on the master node.
A collection of nodes that form a stack topology. The term is useful when a stack is
severed. Each severed portion of the stack is referred to as a stack segment.
A state assigned by the stack to a node. You can display the stack state by
entering the
show stacking
A procedure that automatically configures the essential stacking parameters on
every node for initial stack deployment, and then automatically reboots the stack
to put the parameters into effect.
The choice to run Easy Setup is offered when you run the
{node-address node-address}
parameters are unconfigured or inconsistent. It can also be invoked directly by
running the configure stacking easy-setup
show switch {detail }
command.
enable stacking
command and the essential stacking
command.
Building Stacks
148