Finding the fastest path

Using multiple switches redundantly linked together to form a meshed switch domain, switch meshing dynamically distributes traffic across load-balanced switch paths by seeking the fastest paths for new traffic between nodes. In actual operation, the switch mesh periodically determines the lowest latency paths, then assigns these paths as the need arises. The path assignment remains until the related MAC address entry times out. The mesh sees later traffic between the same nodes as new traffic, and may assign a different path, depending on conditions at the time. For example, at one time the best path from node A to node B is through switch 2. However, if traffic between node A and node B ceases long enough for the path assignment to age out, then the next time node A has traffic for node B, the assigned path between these nodes may be through switch 3 if network conditions have changed significantly.


The mac-age-time parameter determines how long an inactive path assignment remains in memory. See the ArubaOS-Switch Basic Operations Guide for your switch.

Because redundant paths are active, meshing adjusts quickly to link failures. If a link in the mesh fails, the fast convergence time designed into meshing typically has an alternate route selected in less than a second for traffic that was destined for the failed link.