Cisco SG350X Series User instructions

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Configure Stack Settings on an SG350X

Switch

Objective

This article provides instructions on how to configure stack settings on your switch. Stacked

switches are then collectively managed as a single logical device. In some cases, stack ports

can become members in a stack of Link Aggregation Groups (LAGs) increasing the

bandwidth of the stack interfaces.

For further details on stacking, click here to view the article - What is Stacking?

Applicable Devices

SG350X Series

Software Version

2.2.5.68

Configure Stack Settings on a Switch

Connect the Switches

Step 1. Determine the stack that you would like to configure. The options are:

Chain — Each unit is connected to the neighboring unit, but there is no cable connection

between the first and last unit. The image below shows a chain topology of a four-unit stack:

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Ring — Each unit is connected to the neighboring unit. The last unit is connected to the first

unit. The image below shows a ring topology of a four-unit stack:

Step 2. Connect one end of a Small Form-Factor Pluggable (SFP) into the SFP+, XG3, or

XG4 port of your switch.

Note: In this example, the cable is connected to XG3 port of the switch. It is also possible to

stack switches using conventional Ethernet cables on the XG1 and XG2 ports. Performance

offered is similar at short ranges, however for cable runs longer than 100 meters, SFP

provides less latency and greater reliability.

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Step 3. Connect the other end of the SFP+ cable into the SFP+, XG3 or XG4 port of your

switch.

Note: In this example, the cable is connected to XG3 port of the switch.

Step 4. Repeat Steps 2 to 3 to the remaining switches.

You should now have connected your switches according to your desired topology.

Configure Stack Settings on the Master Switch

Master Selection Process

The master unit is selected from the master-enabled units (1 or 2). The factors in selecting

the master unit are taken into account in the following priority:

System Up Time — The master-enabled units exchange up-time, which is measured in

segments of 10 minutes. The unit with the higher number of segments is selected. If both units

have the same number of time segments, and the unit ID of one of the units was set manually

while the unit ID of the other was set automatically, the unit with the manually-defined unit ID

is selected; otherwise the unit with the lowest unit ID is selected. If both units IDs are the

same, the unit with the lowest MAC address is chosen.

Note: The up time of the backup unit is retained when it is selected as master in the switch

failover process.

Unit ID — If both units have the same number of time segments, the unit with the lowest unit

ID is selected.

MAC Address — If both units IDs are the same, the unit with the lowest MAC address is

chosen.

Note: For a stack to operate, it must have a master unit. A master unit is defined as the

active unit that assumes the master role. The stack must contain a Unit 1 and/or Unit 2 after

the master selection process. Otherwise, the stack and all its units are partially shut down,

not as a complete power-off, but with traffic-passing capabilities halted.

Follow these steps to configure stack settings on the Master switch:

Step 1. Log in to the web-based utility of your switch then choose Administration > Stack

Management.

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Note: Alternatively, you can click the Manage Stack option under Initial Setup in the Getting

Started page.

Step 2. Click an option for the Stack Mode. The options are:

Native Stacking — The switch is part of a stack in which all of the units are of the same type.

Hybrid Stacking — The switch is part of a stack that can consist of either mixed types of

Sx350 devices or mixed types of Sx550 devices, but not a mix of Sx350 and Sx550 devices.

Note: In this example, Hybrid Stacking is chosen.

The Stack Topology displays whether the topology of the stack is chain or ring. In this

example, the topology is Chain.

The Stack Master displays the unit ID of the master unit of the stack. In this example, the

switch being configured (Unit 1) is the master of the stack.

Step 3. Click at least two ports to configure as stacking ports. Include the port that is

connected to the other switch.

Note: In this example, XG3 and XG4 are chosen.

Step 4. Choose a unit ID from the drop-down list or choose Auto to have the unit ID be

assigned by the system.

Note: In this example, 1 is chosen.

The Unit x Stack Connection Speed displays the speed of the stack connection.

Step 5. Click Apply and Reboot.

Step 6. Once prompted by the popup message, click OK. The settings are copied to the

running configuration file and the stack is rebooted.

Step 7. Log in to the web-based utility of your switch.

Note: You will be required to configure new password for better protection of your network.

Step 8. Enter the user password of the switch in the Old Password field.

Step 9. Enter the new password in the New Password and Confirm Password fields.

Step 10. (Optional) Check the Disable Password Complexity Enforcement check box to

bypass the password strength requirements.

Note: To learn how to configure the Password Strength security feature of the switch, click

here for instructions.

Step 11. Click Apply to apply the configuration.

Step 12. Choose Administration > Stack Management.

The switch should display the configured settings on the Master switch.

You should now have configured the stack settings of your Master unit.

Configure Stack Settings on the Backup or Slave Switch

Step 1. Log in to the web-based utility of your switch then choose Administration > Stack

Management.

Note: Alternatively, you can click the Manage Stack option under Initial Setup in the Getting

Started page.

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Step 2. Click an option for the Stack Mode. The options are:

Native Stacking — The switch is part of a stack in which all of the units are of the same type.

Hybrid Stacking — The switch is part of a stack that can consist of either mixed types of

Sx350 devices or mixed types of Sx550 devices, but not a mix of Sx350 and Sx550 devices.

Note: In this example, Hybrid Stacking is chosen.

The Stack Topology displays whether the topology of the stack is chain or ring.

The Stack Master displays the unit ID of the master unit of the stack.

Step 3. Click at least two ports to configure as stacking ports. Include the port that is

connected to the other switch.

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