Dell PowerEdge XL 5133-4 MXL 10/40GbE Switch IO Module FTOS Command Reference - Page 222
Stacking Prerequisites, Cabling Stacked Switches, Cabling Restrictions, Cabling Redundancy
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www.dell.com | support.dell.com Stacking Prerequisites Before you cable and configure a stack of 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 FTOS version. The minimum FTOS version required is 8.3.17.0. To check the FTOS version that a switch is running, use the show version command. To download an FTOS version, go to http://support.dell.com. • Stacking is supported only with other Aggregators. A maximum of two Aggregators is supported in a single stack. You cannot stack the Aggregator with MXL 10/40GbE Switches or another type of switch. • A maximum of two stack groups (40GbE ports) is supported on a stacked Aggregator. • Interconnect the stack units by following the instructions in Cabling Stacked Switches. Cabling Stacked Switches Before you configure Aggregators in a stack, connect the 40G direct attach or QSFP cables and transceivers to connect 40GbE ports on two Aggregators in the same chassis. Cabling Restrictions The following restrictions apply when setting up a stack of Aggregators: • Only daisy-chain or ring topologies are supported; star and full mesh topologies are not supported. • Stacking is supported only on 40GbE links by connecting 40GbE ports on the base module. Stacking is not supported on 10GbE ports or 4x10GbE ports. • Use only QSFP transceivers and QSFP or direct attach cables (purchased separately) to connect stacking ports. Cabling Redundancy Connect the units in a stack with two or more stacking cables to avoid a stacking port or cable failure. Removing one of the stacked cables between two stacked units does not trigger a reset. 208 | Stacking