Cisco UBR-MC20X20V Manual

Introduction
The Cisco uBR Advanced RF Switch (Cisco UBR-RFSW-ADV) provides N+1 line card redundancy switching
for the Cisco uBR10012 universal broadband router also known as the Cisco CMTS. The
Cisco UBR-RFSW-ADV is a rack-mount unit controlled by the Cisco uBR10012 router.
•Overview, page 1
•Cisco UBR-RFSW-ADV—Hardware Components Description, page 5
•Interface Overview, page 16
Overview
The Cisco UBR-RFSW-ADV is located between the Cisco uBR10012 router and the cable plant. All the RF
downstream (output) and RF upstream (input) ports of the Cisco uBR10012 router are connected to one side
of the Cisco UBR-RFSW-ADV, while the cable plant is connected to the other side.
The Cisco uBR10012 router supports up to eight cable interface (RF) line cards. Each line card supports a
single downstream Universal Cable Holder (UCH) connector (five RF ports per connector) and two upstream
UCH connectors (ten RF ports per connector).
When supporting N+1 redundancy, the Cisco uBR10012 router allocates one of the eight line cards as a protect
line card.
There are 24 cards on the rear of the Cisco UBR-RFSW-ADV. Each card supports one UCH connector. These
cards are arranged in eight groups of three cards each. In the middle is the protect card group, which consists
of one downstream protect and two upstream protect cards (see Figure 2: Cisco UBR-RFSW-ADV—Rear
View (CMTS Side), on page 3). This protect card group connects to the Cisco uBR10012 router protect
line card. To either side of the protect cards are groups of switch cards—one downstream switch card and
two upstream switch cards per group. These groups of switch cards connect to the remaining line cards on
the Cisco uBR10012 router.
On the front of the Cisco UBR-RFSW-ADV are 21 interconnect cards. These cards are arranged in seven
groups of three cards each. Each group contains one downstream interconnect card and two upstream
interconnect cards. These interconnect cards connect to the cable plant.
When the Cisco uBR10012 router and Cisco UBR-RFSW-ADV are not in protect mode, each interconnect
card group is switched to a corresponding line card on the Cisco uBR10012 router. However, when the Cisco
uBR10012 and Cisco UBR-RFSW-ADV are in protect mode, the interconnect card group associated with the
failed cable interface line card is switched to the protect line card group instead.
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The Cisco uBR10012 router manages all protect switching control plane events and system upgrades.
Cisco IOS Release 12.2(33)SCG and later releases for Cisco uBR10012 router are required for operation with
the Cisco UBR-RFSW-ADV. When the Cisco uBR10012 router determines that a cable interface line card
failure has occurred, it enters into protect mode and additionally commands the Cisco UBR-RFSW-ADV to
enter protect mode.
The Cisco UBR-RFSW-ADV supports the following line cards on the Cisco uBR10012 router:
•Cisco UBR-MC20X20V
•Cisco uBR-MC3GX60V
The Cisco UBR-RFSW-ADV enhances overall system usability by providing easy cabling using the same
quick-connect UCH system used on all Cisco uBR10012 router cable interface line cards.
The Cisco UBR-RFSW-ADV provides the following enhancements over the earlier Cisco uBR 3x10 RF
Switch units:
•One Cisco UBR-RFSW-ADV replaces two uBR 3x10 RF Switch units.
•UCH type connectors allow easy cabling and improved RF and electromagnetic interference (EMI)
performance.
•Image upgrade is improved.
•RF path performance is improved with significantly less insertion loss.
•54 to 1002 MHz downstream frequency range.
•5 to 85 MHz upstream frequency range.
•Fully-redundant control ports.
The figures below show the front view (cable plant side) and the rear view (CMTS side) of the
Cisco UBR-RFSW-ADV.
Figure 1: Cisco UBR-RFSW-ADV — Front View (Cable Plant Side)
Controller card3Downstream interconnect card1
Power supply module4Upstream interconnect card2
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Overview

Figure 2: Cisco UBR-RFSW-ADV — Rear View (CMTS Side)
Downstream Switch Card3Upstream Switch Card1
—
Upstream and Downstream Protect Cards2
The figure below shows the front view (cable plant side) of the upstream-only version of the
Cisco UBR-RFSW-ADV.
Figure 3: Upstream-Only Version of Cisco UBR-RFSW-ADV — Front View (Cable Plant Side)
Power supply module3Upstream interconnect card1
—
Controller card2
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Introduction
Overview

The figure below shows the rear view (CMTS side) of the upstream-only version of the
Cisco UBR-RFSW-ADV.
Figure 4: Upstream-Only Version of Cisco UBR-RFSW-ADV — Rear View (CMTS Side)
Upstream protect cards2Upstream switch card1
The table below lists the Cisco UBR-RFSW-ADV chassis dimensions.
Table 1: Cisco UBR-RFSW-ADV Chassis Dimensions
DimensionUnit
17.70 in (44.96 cm)—measured from front connector panel face to rear connector panel
face
19.46 in (49.43 cm)—measured from front connector handle to rear connector handle
Chassis Depth
17.28 in (43.89 cm)Chassis Width
3 rack unitsChassis Height
Two types of rack-mounting are supported for the Cisco UBR-RFSW-ADV:
•Mounting a Single Cisco UBR-RFSW-ADV Above a Cisco uBR10012 Universal Broadband Router
•Mounting Two Cisco uBR10012 Universal Broadband Routers and Two Cisco UBR-RFSW-ADVs in
a Single Rack
For more details on rack-mounting, see Rack-Mounting the Cisco UBR-RFSW-ADV with the Cisco
uBR10012 Router.
Note
For more information about the Cisco UBR-RFSW-ADV product identifiers (PIDs), see Power Requirements.
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Overview

Cisco UBR-RFSW-ADV—Hardware Components Description
The Cisco UBR-RFSW-ADV consists of the following hardware components:
Upstream Switch Cards
Figure 5: Upstream Switch Card Faceplate
Two sets of five upstream ports3Captive screws1
—
LEDs2
On the Cisco uBR10012 router side of the Cisco UBR-RFSW-ADV, there are 14 upstream switch cards.
Two upstream switches are used for each line card on the Cisco uBR10012 router (CMTS side).
For information about the PIDs for the upstream switch card and upstream protect card, see Cisco
UBR-RFSW-ADV Components Part Numbers and Product Identifiers.
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Introduction
Cisco UBR-RFSW-ADV—Hardware Components Description

Upstream Interconnect Cards
Figure 6: Upstream Interconnect Card Faceplate
Two sets of five upstream ports2Captive screws1
On the cable plant side of the Cisco UBR-RFSW-ADV there are 14 upstream interconnect cards.
For information about the PIDs for the upstream interconnect card, see Cisco UBR-RFSW-ADV Components
Part Numbers and Product Identifiers.
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Upstream Interconnect Cards

Upstream Protect Cards
Figure 7: Upstream Protect Card Faceplate
Two sets of five upstream ports3Captive screws1
—
LEDs2
On the Cisco CMTS side of the Cisco UBR-RFSW-ADV there are two upstream protect cards.
For information about the PIDs for the upstream protect card, see Cisco UBR-RFSW-ADV Components Part
Numbers and Product Identifiers.
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Upstream Protect Cards

Downstream Switch Cards
Figure 8: Downstream Switch Card Faceplate
Five downstream ports3Captive screws1
—
LEDs2
On the Cisco CMTS side of the Cisco UBR-RFSW-ADV, there are seven downstream switch cards.
For information about the PIDs for the downstream switch card, see Cisco UBR-RFSW-ADV Components
Part Numbers and Product Identifiers.
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Downstream Switch Cards

Downstream Interconnect Cards
Figure 9: Downstream Interconnect Card Faceplate
Five downstream ports2Captive screws1
On the cable plant side of the Cisco UBR-RFSW-ADV, there are seven downstream interconnect cards.
For information about the PIDs for the downstream interconnect card, see Cisco UBR-RFSW-ADV Components
Part Numbers and Product Identifiers.
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Downstream Interconnect Cards

Downstream Protect Cards
Figure 10: Downstream Protect Card Faceplate
Five downstream ports3Captive screws1
—
LEDs2
On the Cisco CMTS side of the Cisco UBR-RFSW-ADV there is only one downstream protect card.
For information about the PIDs for the downstream protect card, see Cisco UBR-RFSW-ADV Components
Part Numbers and Product Identifiers.
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Downstream Protect Cards