System information

Stacking PowerConnect 10G Switches: M8024-k, 8024, 8024F

Note: An M8024-k modular blade switch does have a blue LED identifier for its Master only.

An easy way to find the Unit number and identify order of the stacked units is to use logging

commands. From the Telnet or Serial port CLI, perform the following.

console(config)#logging on

From the stack, create a link-up or link-down on any port for two to three seconds by either plugging in

or unplugging a cable, then reversing the action. Check the log on the stack using the following

command in enable mode.

console#show logging

The log will identify both the Unit and Port that was used in the link operation. Continue this process

to identify all Unit numbers in the switch. If the show logging command is full, it can be saved off to

another location then cleared for easier reading. Also if the log is not needed, it can be cleared as

well prior to creating the link events.

To now identify which unit is the stack Master and which ones are members, type the following

command.

console#show switch

Management Standby Preconfig Plugged-in Switch Code

SW Status Status Model ID Model ID Status Version

--- ---------- --------- ------------- ------------- ------------- -------

1 Mgmt Sw PC8024 PC8024 OK 4.2.0.1

2 Stack Mbr PC8024F PC8024F OK 4.2.0.1

3 Stack Mbr Oper Stby PC8024 PC8024 OK 4.2.0.1

4 Stack Mbr PC8024F PC8024F OK 4.2.0.1

Note that in this example Unit 1 is the Master (Mgmt Sw) and Unit 3 is the Standby (Oper Stby)ready to

take over as Master in the event the Master fails.

Note: If the stack consists of M8024-k modular switches in an M1000e chassis, the CMC will also show

the fabric (A1, A2, B1, B2, C1, or C2) in which the Master is located.

Removing the Physical Switch Unit from the Stack

Before removing a physical unit from a stack, the administrator will need to prepare ports on the other

stack member units to receive the cables and traffic that will be redirected to them from the member

unit being removed. Consider all LAGs, VLANs, STP, ACLs, security, etc., that will need to be

configured on the new ports in order to accept cables, establish links, and begin to forward traffic. It

is highly recommended to not continue until these things have been considered and proper

preparations are made.

Note: Do not remove or re-route stacking cables until prompted in the last step below.