Which switch series supports meshed stacking, a feature that is similar to Intelligent Resilient
Framework (IRF)?

A.
HP 3500 Switch Series

B.
HP 3800 Switch Series

C.
HP 5400 21 Switch Series

D.
HP 5500 HI Switch Series

Explanation:
http://h30507.www3.hp.com/t5/HP-Networking/5-network-stacking-technology-benefitsIntelligent-Resilient/ba-p/122081#.UweFeUKSxHg