Cisco is reported to have parted company with four executives who were behind some of its biggest successes, following a recent management reshuffle.

Mario Mazzola, Prem Jain, Luca Cafiero and Soni Jiandani made their names creating product development startups which Cisco funded, and then acquired. Last week, it was reported that Mazzola, Jain and Cafiero, who had previously been SVPs, would become “advisors”.

The Wall Street Journal said the decision to leave comes from a “disconnect regarding roles, responsibilities and charter,” which came to light after the reorg.

Under John Chambers, Cisco’s former CEO, the team, known as MPLS, was funded by Cisco and provided with support services, with Cisco able to acquire resulting companies at a set price when certain milestones had been met. However, the report said that internally some felt that MPLS seemed to receive financial rewards and benefits which others did not.

Chuck Robbins, Cisco’s current CEO, has been reshuffling the company in the meantime, which has seen the departure of several high-profile departures.

The company has also formed a high-profile partnership with Ericsson, and acquired Jasper to bolster its IoT proposition.