Cisco Systems UBR-3X10 manual Cmts and Protect wiring

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 4-14for 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 4-10for line card-to-RF switch port mapping information.)

Figure 4-14 Wiring the CMTS and Protect Headers (Cable Plant Headers Shown for Comparison)

Red

White

Upstream Blue

Green

Gray

Red

Downstream

AH

BI

CJ

DK

EL

FM

GN

Yellow Yellow

VioletViolet

Orange Orange

BlackBlack

Brown Brown

WhiteWhite

HA I B J C K D L E M F N G

Red

White

Blue

Green Cisco RF Switch 2 Gray

Red

Red

White

Upstream Blue

Green

Gray

Green

Downstream

Blue

A H

B	I
C	J

D	K
E	L

F	M
G	N

Yellow

Violet

Orange

Black

Brown

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

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CMTS and Protect wiring

Cable Plant wiring

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.

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

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