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5.4.3 Limitation with Trunking in S tacking mode
Two basic rules declare here:
1. Stacking members can’t and trunk with each other.
2. Stacking members can trunk with non-stacking member.
The packet traffics between stacking members are transferred only through Giga module. Trunking
between stacking members may cause the spanning tree protocol (STP) to alter the topology and
change the routed ports. If it happens, Giga port traffic may break and the stacking mechanism will
fail.
For non-stacking member, it has no such limitation.