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NTRODUCTION
Dual Fiber Repeater
Module (6210M-DFR)
The CoreBuilder 5000 Token Ring Dual Fiber Repeater (DFR) Module is a
10-port, single-slot module that supports two sets of fully repeated
fiber Ring-In/Ring-Out ports. Using the CoreBuilder 5000 hub in a
collapsed backbone, each DFR Module can collapse two rings from
remote locations into the central hub. The module’s features are:
■
Simultaneous 4 and 16 Mbps Token Ring networks, when switched
to the appropriate ring speed
■
10 RJ-45 actively-retimed port-switching ports for connecting devices
to Token Ring networks using shielded or unshielded twisted-pair
cabling (or both types simultaneously)
■
Industry-standard ST fiber connectors, which support multimode
62.5/125 µm fiber at distances up to 2 km
■
Up to 11 individual rings per module, and can switch ports among
any of the 11 isolated or 10 backplane rings
■
Accepts two Jitter Attenuation Cards and a Token Ring Network
Monitor Card (TR-NMC)
■
Address-to-port mapping, including multi-station ports (fan-outs)
and MAC-less stations
■
Module-level, hardware-based beacon recovery
■
IEEE 802.5 compliant
■
IEEE 802.5c trunk support
■
Fan-out support for up to eight devices per port
■
Automatic ring speed detection
