Stacked Device and Version Requirements
Licensing Requirements
Stacking is a basic software function of the switch. The license for basic software functions has been loaded and activated before delivery. You do not need to manually activate it.
The enhanced stack DAD function is controlled by a license. By default, this function is disabled on a newly purchased device. To use this function, apply for and purchase the license from the equipment supplier.
Device and Version Requirements
Table 1-1 lists the devices models and versions used to set up stacks.
Device Series and Model |
Maximum Number of Member Switches in a Stack |
Version Support |
|---|---|---|
CloudEngine 16800
|
2 |
V200R005C20 and later versions |
NOTE:
Switches of the same series but different models can set up a stack. For example, a CloudEngine 16804 switch and a CloudEngine 16808 switch can set up a stack. |
||
For details about the mapping between software versions and switch models, see the Hardware Query Tool.
Software version evolution: V200R005C20 -> V200R019C10 -> V200R020C00 -> V200R020C10
Card Requirements
MPU: Each member switch needs to have at least one MPU installed. To ensure high reliability, it is recommended that each member switch have two MPUs installed.
The CE-MPUE-FULL and CE-MPUE-HALF do not support the stacking function.
LPU: Each member switch needs to use at least one LPU to set up a stack. To ensure high reliability, it is strongly recommended that each member switch use two or more LPUs to set up a stack. That is, stack links are deployed on different LPUs.
If there is no forwarding link between two member devices, all service ports of one member device enter the Error-Down state.- If two member devices are not connected through the forwarding link when setting up a stack or the forwarding link has not been Up after a stack is set up, service ports on the standby switch enter the Error-Down state.
- If the forwarding link changes from Up to Down, service ports on the member device with fewer LPUs enter the Error-Down state. If the two member devices have the same number of LPUs, service ports on the standby switch enter the Error-Down state.