Token Ring ports are capable of running at 4 or 16 mbps, and either half- or full-duplex.
Token Ring ports can operate as Token Ring concentrators or as end stations.
The following bridging modes are supported:
- Source-route bridging (SRB) Routing Information Fields (RIFs) forward packets from rings to bridges, instead of learning MAC addresses. Both the IBM and IEEE STPs are supported.
- Source-route transparent (SRT) SRB is combined with transparent bridging. Packets with a RIF are forwarded through SRB, whereas packets without a RIF are forwarded through transparent bridging. Only the IEEE STP is supported.
- Source-route switching (SRS) Packets can be forwarded based on MAC addresses or RIFs.
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