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Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
OL-1984-06
Chapter 4 Cabling the RF Switch With the Cisco uBR10012 CMTS Cable Interface Line Cards
Mapping the Working and Protect Cisco uBR10-MC5X20S/U/H Line Cards RF Cables to the RF Switch
Mapping the Working and Protect Cisco uBR10-MC5X20S/U/H
Line Cards RF Cables to the RF Switch
This section describes the mapping of RF cables from the working and protect line cards to the
Cisco uBR 3x10 RF Switch. Refer to Figure 4-14 for header block and cable designations as viewed
from the cable side of the header blocks.
When you connect RF cables between the RF switch and a cable interface line card installed in a
Cisco uBR10012 chassis, ensure that all the RF cables in the bundle attach to interfaces on the same
cable interface line card installed in the Cisco uBR10012 chassis. (Refer to Table 4-7, Table 4-8,
Table 4-9, and Table 4-10 for line card-to-RF switch port mapping information.)
Figure 4-14 Wiring the CMTS and Protect Headers (Cable Plant Headers Shown for Comparison)
Use the following guidelines to map cables between the Cisco uBR 3x10 RF Switch and the
Cisco uBR10012 CMTS:
• The cable interface ports labeled A through E and H through L on the header block all must attach
to upstream interfaces on the Cisco uBR10012 chassis.
• The cable interface ports labeled F, G, and M are applicable only to downstream connection.
• The cable interface port labeled N on the header block does not attach to anything in the RF switch.
Therefore, it should not be connected to any cable interface on the Cisco uBR10012 CMTS.
Note This mapping is applicable to both working and protect cable interface line cards when employing N+1
redundancy. The distinction between which cable interface line card serves as a protect line card and
which serve as working line cards is determined by whether the header block is plugged into a working
(switch side) or protect group of slots on the Cisco uBR 3x10 RF Switch and by the configuration you
specify. Refer to the “N+1 Redundancy for the Cisco CMTS” chapter of the Cisco Cable Modem
Termination System Feature Guide.
AH
BI
CJ
DK
E L
FM
G N
Red
White
Blue
Upstream
Downstream
Green
Gray
CMTS and Protect wiring
YellowYellow
Violet
Orange
Black
Brown
White
AH
BI
CJ
DK
EL
FM
GN
Red
White
Blue
Green
Gray
Red
Cable Plant wiring
YellowYellow
Violet
Orange
Black
YellowYellow
Violet
Orange
Black
Brown
White
82964
Red
AH
BI
CJ
DK
E L
FM
G N
Red
White
Blue
Upstream
Downstream
Green
Gray
YellowYellow
Violet
Orange
Black
Brown
Yellow
AH
BI
CJ
DK
EL
FM
GN
Red
White
Blue
Green
Cisco RF Switch 1
Cisco RF Switch 2
Gray
Green
Blue
Brown
Yellow
Green
Blue
