Configuring Evb In Stacking Mode - Lenovo Flex System Fabric CN4093 Application Manual

Configuring EVB in Stacking Mode

© Copyright Lenovo 2017
A stack is a group of up to eight CN4093 10 Gb Converged Scalable Switch switches
with Enterprise NOS that work together as a unified system. The switches in a
stack are interconnected by a stack LAG in a local ring topology.
An operational stack must contain one Master and one or more Members, as
follows:
Master

One switch controls the operation of the stack and is called the Master. The
Master provides a single point to manage the stack. A stack must have one and
only one Master. The firmware image, configuration information, and run‐time
data are maintained by the Master and pushed to each switch in the stack as
necessary.
Member

Member switches provide additional port capacity to the stack. Members
receive configuration changes, run‐time information, and software updates
from the Master.
 Backup
One member switch can be designated as a Backup to the Master. The Backup
takes over control of the stack if the Master fails. Configuration information and
run‐time data are synchronized with the Master.
For details on implementing the stacking feature, see "Stacking" on page
EVB can be configured on any port in the stack. Use the Master to configure EVB
on a port in the stack. The port numbers in a stack use the following format:
<switch number>:<port number>
Configure VSIDB on a data or management port that resides on the Master.
The Master process the EVB‐related information for all the switch ports in a stack.
The Master performs the VSIDB synchronization (See "VSIDB Synchronization"
on page 350). The Master synchronizes all EVB changes with the Backup.
If the Master fails, the Backup takes over control of the stack. The VSI associations
on the Master ports are lost. All other VSI associations remain unchanged.
Chapter 19: Edge Virtual Bridging
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