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Note You must use high-performance, category 5, data-grade, modular cross-connect cables for
external CDDI connections.
When you plan your CDDI installation, remember the following:
•
Use cross-connect (patch) panels which comply with the EIA/TIA 568B category 5 wiring
standard.
•
Do not use bridge taps.
•
Do not use protection coils.
•
Do not share services (such as voice and data on the same cable). CDDI uses two of the four pairs
in the twisted-pair cable. The remaining two pairs cannot be used for other applications.
•
Do not exceed the maximum cable length for CDDI UTP and STP of 330 feet (100.6 m).
A/B Port Cards
The A/B port cards are options that provide two additional CDDI/MLT-3 or FDDI ports.
Caution During these procedures, the concentrator must be turned off, thereby disrupting the ring.
The A/B card slot supports a single media access control (MAC), dual attachment station (DAS)
with dual homing configuration for FDDI (can also be used as single attachment station [SAS]). The
slot also accepts CDDI/MLT-3 cards for UTP and STP connections.
Figure 3 shows the following three models of A/B port cards:
•
WS-C1511—Multimode FDDI with FDDI MICs
•
WS-C1513— CDDI/MLT-3 with category 5 UTP modular RJ-45 connectors
•
WS-C1514—Single-mode FDDI with standard FDDI ST-type connectors
Figure 3
1 (WS-C1511)
2 (WS-C1513)
3 (WS-C1514)
FDDI and CDDI A/B Port Cards
A/B Port Cards
Installing A/B Port Cards 3
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