Figure 30 Single Node Link Redundancy
When RSTP is used, an uplink and a transit link must be configured for each
switching domain. It does not matter which of the uplink ports is configured as
uplink and which is configured as transit link. For easier understanding,
configure the same uplink ports and transit ports in all switching domains. The
EFN324 will automatically change the designation if a link fails and the data
path changes direction, as illustrated in Figure 31 on page 74.