Dell PowerConnect 8024 User Configuration Manual page 143

Create a stack by connecting adjacent units using the 10G ports (SFP+ ports
only on the PC80xx series). It is recommended that stacking link bandwidth
be at least 10 times the bandwidth of the front panel port, that is, a 10G
switch (PC8100) should have 100G of stacking bandwidth to each adjacent
stack member. Additional stacking connections can be made between
adjacent switch units to increase the stacking bandwidth. It is strongly
recommended that the stacking bandwidth be kept equal across all stacking
connections; that is, avoid mixing single and double stacking connections
within a stack. Up to eight links can be utilized between two stacking peers.
1 Use the CLI or web interface to configure the ports for stacking. By
default, the ports are configured to operate in Ethernet mode. For more
information about configuring the port mode, see "Stack Port Summary"
on page 158 (Web) or "Configuring Stack Member, Stack Port, and NSF
Settings" on page 162 (CLI). A reboot is required to enable the ports in
stacking mode.
2 For each switch in the stack, connect one cable from a stacking port on the
switch to a stacking port on the next switch. Add additional cables in
parallel as needed until the desired stacking bandwidth is achieved.
3 Repeat this process until all of the devices are connected.
4 To complete the ring topology for the stack, connect one stacking port on
the last switch to the remaining stacking port on the first switch. Add
additional cables in parallel to achieve the desired stacking bandwidth.
Managing a Switch Stack
143