fido2100 3-Port Industrial Ethernet DLR Switch with IEEE1588
Data Sheet
April 10, 2013
Figure 4 Hybrid Daisy Chain and Hierarchical Star Topology
It should be noted that a slower speed or half duplex link on main daisy chain will become a bottle
neck, causing the entire network to operate at reduced capacity. Similarly, a single port device can be
connected to either end of main daisy chain network, only if it operates at same/better speed and duplex
mode as rest of the network. The recommended method for connecting slower speed/duplex devices is
through a three port tap device to avoid performance issues.
Figure 5 shows a ring topology media redundancy that can tolerate single faults. One or more DLR
supervisor(s) control the operation of ring. When multiple DLR supervisors are configured, one of
them will be automatically chosen as active supervisor. Others will be in passive mode, until the active
DLR supervisor fails or is removed from ring.
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