Cisco should have consolidated the switch and router groups together to share the same OS, chip set and code base. Having different BUs or groups working more or less the same thing, it increases the cost and lower the margin. It is very painful to eliminate the overhead but it is the only way to make the investors and customers happier. The saved head count could be used to invest on newer technology and moving Cisco more to software and cloud. Today, even some of the BUs are merged together logically.
But physically they are still isolated because of the political boundaries created by the management layers. Please collapse or eliminate some of the management roadblock. It is scary to see 7 or 8 layers of hierarchy between engineers and CEO. Time to clean it up in the right direction. Cleaning up the engineers, the doers, won't help the company much because the rotten part is in the management layers.