Configuring A Stack; Configuration Overview; Best Configuration Practices - Lenovo RackSwitch G8264CS Application Manual

Configuring a Stack

Configuration Overview

Best Configuration Practices

258
G8264CS Application Guide for ENOS 8.4
Notes:
 When stacking mode is enabled on the switch, the configuration is reset to
factory default and the port numbering changes.
When a switch mode is changed from standalone to stack or from stack to

standalone, the active and backup configuration will be erased. We
recommended that you save the configuration to an external device before
changing the switch mode.
This section provides procedures for creating a stack of switches. The high‐level
procedure is as follows:
 Configure the stack settings to be available after the next reboot:
Choose one Master switch for the entire stack.

Configure the same stacking VLAN for all switches in the stack.

Configure the desired stacking interlinks.

Reboot the Master switch.

 Configure the stack after the reboot:
Bind Member switches to the Master.

Assign a Backup switch.

These tasks are covered in detail in the following sections.
The following are guidelines for building an effective switch stack:
 Always connect the stack switches in a complete ring topology (see Figure 31 on
page 260).
 Avoid disrupting the stack connections unnecessarily while the stack is in
operation.
 For enhanced redundancy when creating port LAGs, include ports from
different stack members in the LAGs.
 Avoid changing the csnum definitions unnecessarily while the stack is in
operation.
Avoid rebooting the switches unnecessarily.

 When in stacking mode, the highest QoS priority queue is reserved for internal
stacking requirements. Therefore, only seven priority queues will be available
for regular QoS use.
 Configure only as many QoS levels as necessary. This allows the best use of
packet buffers.