多选题

知识点：网络 9/10(多选/必答) How to avoid loopi...

Question

知识点：网络 9/10(多选/必答)
How to avoid looping issue when multiple links exist between 2 switches

A. Running spanning-tree protocol

B. Running routing protocol

C. Using layer 3 connection between the switches

D. using bundle to combine the multiple links