• stack-group 12 corresponds to the 40G port 49, stack-group 13 corresponds to port 50, so on
through stack group 17.
Figure 125.
1 Stack-group 0 (Ports 1, 2, 3, and 4) 2 Stack-group 1 (Ports 5, 6, 7, and 8)
3 Stack-group 2 (Ports 9, 10, 11, and 12) 4 Stack-group 3 (Ports 13, 14, 15, and 16)
5 Stack-group 12 (Port 49) 6 Stack-group 14 (Port 51)
7 Stack-group 16 (Port 53) 8 Stack-group 17 (Port 54)
9 Stack-group 15 (Port 52) 10 Stack-group 13 (Port 50)
You can connect the units while they are powered down or up. Stacking ports are bi-directional.
Syslog messages are generated by the management unit:
• before the management unit downloads its Dell Networking OS version 8.3.12.0 or later to the new unit.
The syslog includes the unit number, previous version, and version being downloaded.
• when the firmware synchronization is complete.
• if the system check fails, a message such as a hardware incompatibility message or incompatible uboot
version is generated. If the unit is placed in a card problem state, the management unit also generates
an SNMP trap.
• if the software version of the new unit predates Dell Networking OS version 8.3.12.0 , the management
unit puts the new unit into a card problem state and generates a syslog that identifies the unit, its Dell
Networking OS version, and its incompatibility for firmware synchronization.
NOTE: You must enter the stack-unit stack-unit stack-group stack-group command when
adding units to a stack to ensure the units are assigned to the correct groups.
NOTE: Any scripts used to streamline the stacking configuration process must be updated to reflect the
Command Mode change from EXEC to CONFIGURATION to allow the scripts to work correctly.
Enabling Front End Port Stacking
To enable the front ports on a unit for stacking, use the following commands.
NOTE
: You can stack a maximum of two 10G stack ports.
NOTE: After a port is allocated for stacking, you can only use it for stacking. If stack-group 0 is allocated
for stacking, you can use ports 1, 2, 3, and 4 for stacking but not for Ethernet anymore. If only port 1 is
used for stacking, ports 2, 3, and 4 are spare; they cannot be used for Ethernet.
1 Assign a stack group for each unit.
CONFIGURATION mode
stack-unit id stack-group id
Stacking 1022
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