Stacking - Supermicro SSE-G48-TG4 Reference Manual

Intelligent switch

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Super Micro Intelligent Switch Command Line Interface User Guide

4 Stacking

Stacking is supported on only the following Super Micro Intelligent units:

SBM-GEM-X2C+

Stacking is not supported on the 10G Ethernet switches:

SBM-XEM-X10SM

Switch stacking is created by connecting switches in a daisy chain. One of the stacked

switches is selected as the "Master" based on configuration. The Master switch provides

management support for the entire stack. Other switches in the stack are referred to as

"Slave" switches.

Make sure all stacked switches run the same version of firmware.

The Master Switch manages the control plane traffic for all stacked switches. When a

current Master Switch fails, the backup Master is selected as the current Master. The

Master selection algorithm is based on a priority configuration. If two switches have the

same priority the switch with the lowest MAC address gets selected as the Master Switch.

Stacking Cabling

Stacking is supported with CX-4 cables only. Use only CX4 cables from Supermicro:

CBL-0474L for 1-meter and CBL-0389L-01 for 3-meter. The CX-4 cable used for

stacking should be no more than 3M in length. This is because stacking internally runs

at 12Gbps and therefore requires a more robust signal than longer cable lengths might

provide reliably. The industry standard stacking cable length is 3M.

Note: For stacking ports, you do not need to configure CX4 cable length. It is

fixed as "short" for stacking ports.

Warning: Use of CX4 cables from suppliers other than Supermicro for stacking

is not supported by Supermicro.

When used for 10G Ethernet uplinks, the CX-4 ports can be from 1M to 12M in length;

the maximum CX-4 cable length supported on Supermicro switches is 12M.

Release : 1.1f

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