Service Manual

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 13 (Port 50)
9. Stack-group 15 (Port 52) 10. Stack-group 17 (Port 54)
You can connect the units while they are powered down or up. Stacking ports are bi-directional.
When a unit is added to a stack, the management unit performs a system check on the new unit to ensure the hardware type is
compatible. A similar check is performed on the Dell Networking OS version. If the stack is running Dell Networking OS version
8.3.12.0 and the new unit is running an earlier software version, the new unit is put into a card problem state.
• If the unit is running Dell Networking OS version 8.3.10.x, it is upgraded to use the same Dell Networking OS version as the
stack, rebooted, and joined the stack.
• If the new unit is running an Dell Networking OS version prior to 8.3.10.x , the unit is put into a card problem state, Dell
Networking OS is not upgraded, and a syslog message is raised. The unit must be upgraded to Dell Networking OS version
8.3.12.0 before you can proceed.
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
Begin with the first port on the management unit. Next, configure both ports on each subsequent unit. Finally, return to the
management unit and configure the last port.
The range is from 0 to 17.
2 Save the stacking configuration on the ports.
EXEC Privilege mode
write memory
3 Reload the switch.
Stacking 864