Stacking Scenarios; Figure 4. Qsfp+ Two 40Gbe Port Expansion For The Mxl - Dell Force10 MXL Manual

Stacking Dell Force10 MXL 10/40G Switches
Current Type
Master priority : 0
Hardware Rev
Num Ports
Up Time
FTOS Version
Jumbo Capable : yes
POE Capable
Burned In MAC : 00:1e:c9:cc:bb:21

No Of MACs
To force a particular switch to become the Master during stack creation, be sure that switch has the
highest Priority of all switches joining the stack. The switch with the highest Priority number is
elected Master. The default Priority is 0. Priorities for the stack-unit can be configured using the
command 'stack-unit <unit-number> priority <1-14>' from the configuration mode as follows:
FTOS(conf)#stack-unit 0 priority ?
<1-14>
FTOS(conf)#stack-unit 0 priority 12

Stacking scenarios

The following section presents a variety of examples stacking Dell Force10 MXL switches, providing
step-by-step CLI commands. Consult the table of contents for a list of examples covered in this
document.
It is most important to have all switches on the same firmware version prior to stacking them. Be sure
to update all switches to be used with the latest firmware to obtain the best results.
Unless noted, the example scenarios assume the switches are using the MXL built-in external ports 33
and 37 and that no expansion modules are installed providing additional external ports. However, once
a QSFP+ expansion module is set to 40Gb mode, it can then be set to stacking mode just like the built-
in QSFP+ ports. Each QSFP+ expansion module (Figure 2) installed provides two additional ports which
can be used for stacking when in 40Gb port mode. Use the "show system stack-port" command to see
if any ports are already in stacking mode.
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Figure 4.
Dell Force10 MXL modular blade switches may only be stacked using QSFP+ ports in 40GbE port mode.
QSFP+ built-in ports are set to 40Gb by default while expansion module QSFP+ ports are set to 10Gb
ports by default. To change a port from 10Gb mode to 40Gb mode, use the command
: MXL-10/40GbE - 34-port GE/TE/FG (XL)
: X00
: 56
: 1 wk, 3 day, 23 hr, 5 min
: 8.3.16.0E0
: no
: 3
Priority Value
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QSFP+ two 40GbE port expansion for the MXL
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