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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
This section describes the mapping of RF cables from the working and protect line cards to the
Cisco uBR 3x10 RF Switch. Refer to
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
Figure 4-14
Upstream
Downstream
Upstream
Downstream
Use the following guidelines to map cables between the Cisco uBR 3x10 RF Switch and 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.
OL-1984-06
Mapping the Working and Protect Cisco uBR10-MC5X20S/U/H Line Cards RF Cables to the RF Switch
4-9, and
Table 4-10
for line card-to-RF switch port mapping information.)
Wiring the CMTS and Protect Headers (Cable Plant Headers Shown for Comparison)
Red
Yellow
Yellow
A H
White
Violet
B
I
Blue
Orange
C
J
Green
Black
D K
Gray
Brown
E
L
Red
White
F M
G N
Red
Yellow
Yellow
A H
White
Violet
B
I
Blue
Orange
C
J
Green
Black
D K
Gray
Brown
E
L
Green
Yellow
F M
Blue
G N
CMTS and Protect wiring
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.
Figure 4-14
for header block and cable designations as viewed
Yellow
Yellow
Red
H
A
Violet
White
I
B
Orange
Blue
J
C
Black
Green
Cisco RF Switch 2
K
D
Brown
Gray
L
E
White
Red
M
F
N
G
Yellow
Yellow
Red
H
A
Violet
White
I
B
Orange
Blue
J
C
Black
Green Cisco RF Switch 1
K
D
Brown
Gray
L
E
Yellow
Green
M
F
Blue
N
G
Cable Plant wiring
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
Table
4-7,
Table
4-8,
4-21
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