Allied Telesis x600-48Ts/XP - Manual (Page 45)

x600 Series Layer 3 Gigabit Ethernet Switches Installation Guide
45
Resilient Stacked
Topology
Where network connectivity uptime is a major criteria, you can use virtual
chassis stacking to create highly reliable network configurations.
Employing link aggregation rather than spanning tree to manage the
parallel paths, enables the bandwidth of both data links to be utilized under
normal conditions, whilst enabling a single data link to operate should its
partner link fail.