Dell PowerConnect 8164F Technical Information download pdf (Page 12)

Stacking Dell PowerConnect 8100 Series Switches: 8132, 8132F, 8164, 8164F

Stacking Dell PowerConnect 8100/8100F series switches using multiple stack links

Figure 9.

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QSFP+ quad-breakout cables

QSFP+ quad-breakout cables may also be used for stacking. This allows a 40G QSFP+ port to connect to

four 10G SFP+ ports on the adjacent switch. When a breakout cable is used, the connections are

considered to be four links taking up four ports.

QSFP+ quad-breakout cable may be used for stacking Figure 10.

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QSFP+ MODULE

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To use a QSFP+ quad-breakout cable to stack two peers, the QSFP+ port must be set to port mode

4x10G and reloaded before setting it to stack mode (described in the next section). From the interface

configuration CLI prompt, use the hardware profile command to set the port to this mode. The

command is:

console(config-if-Fo5/0/1)#hardware profile portmode 4x10g

This command will not take effect until the switch is rebooted.

When the portmode changes on a port, so do the interface names. For example, a QSFP+ port may be

named Fo1/0/1 when in 40G mode but takes on a new identity as Te1/1/1 through Te1/0/4 when

changed to 10G mode. Therefore, if it is desired to use the QSFP+ quad-breakout cable, be sure to set

the port mode to 4x10G and reload the switch before setting the ports to stack mode since

configuration settings on one port mode does not translate to the other portmode.

Also, when in port mode 4x10G it is required that all four of the breakout ports be moved from

Ethernet mode to Stack mode to use them for stacking.

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Dell PowerConnect 8164F Technical Information Page 12

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