Stack split

Multiple link or member failures can result in a complete stack split, with the master and standby switch in different split fragments. In this case, both master and standby switches will become master switches. Each stack fragment will continue operating with the same configuration and state, and forward traffic between all stations that the fragment can reach.

The downside of this scenario is that each stack fragment will have the same MAC address and IP addresses. To avoid this scenario, configure split detection (described in the following section) which would bring down the interfaces on one fragment to prevent duplicate MAC/IPs.