Stacking, Configuring a switch stack, Stacking prerequisites – Dell PowerEdge FX2/FX2s User Manual
Page 188: Master selection criteria, 16 stacking
16
Stacking
An Aggregator auto-configures to operate in standalone mode. To use an Aggregator in a stack, you
must manually configure it using the CLI to operate in stacking mode.
Stacking is supported on the FN410S and FN410T Aggregators with ports 9 and 10 as the stack ports. The
Aggregator supports both ring and daisy-chain topology and stacking of the same type. FN 410S and FN
410T Aggregators support two-unit in-chassis stacking and up to six units stacking across the chassis.
In Stack mode, the lower two external Ethernet ports (ports 9 and 10) operate as stack links. In
Programmable MUX (PMUX) mode, you can configure any of the external Ethernet ports to operate as
stack links.
Stacking provides a single point of management for high availability and higher throughput. To configure
a stack, you must use the CLI.
Configuring a Switch Stack
To configure and bring up a switch stack, follow these steps:
1.
Connect the ports on the base module of two Aggregators using 10G direct attach or SFP+ fibre
cables.
2.
Configure each Aggregator to operate in stacking mode.
3.
Reload each Aggregator, one after the other in quick succession.
Stacking Prerequisites
Before you cable and configure a stack of the Aggregators, review the following prerequisites.
• All Aggregators in the stack must be powered up with the initial or startup configuration before you
attach the cables.
• All stacked Aggregators must run the same Dell Networking OS version. To check the version that a
switch is running, use the show version command. To download a Dell Networking OS version, go
to
• Stacking is supported only with other Aggregators. A maximum of six Aggregators are supported in a
single stack.
• A maximum of four stack groups is supported on a stacked Aggregator.
• Interconnect the stack units by following the instructions in
.
• You cannot stack a Standalone IOA and a PMUX.
Master Selection Criteria
A Master is elected or re-elected based on the following considerations, in order:
1.
The switch with the highest priority at boot time.
188
Stacking