Dell PowerEdge FX2 Dell PowerEdge FN I/O Aggregator Configuration Guide 9.6(0 - Page 188
Stacking, Configuring a Switch Stack, Stacking Prerequisites, Master Selection Criteria - review
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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 http://support.dell.com. • 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 Cabling the Switch Stack. • 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