Cisco RF Gateway 10 Hardware Installation Guide

Cisco RFGW-10 System Configuration

Figure 1-1 shows the location of the front and the rear system components for the Cisco RFGW-10 UEQAM.

Figure 1-1 Cisco RFGW-10 Chassis Components—Front and Rear View

The Cisco RFGW-10 UEQAM is installed in a standard 19-inch equipment or telco rack. A rack-mount kit ships from the Cisco factory with each router. The rack-mount kit includes the hardware needed to mount the router in a standard 19-inch equipment rack or telco-type rack. Mounting in 23-inch equipment rack is possible with optional third-party mounting hardware.

The components in the front include the Supervisor Cards, RF line cards, and the front panel LCD. The components on the rear include the Fan Assembly, RF Switch cards (coaxial terminations), TCC (DTI Clock) cards, and the power supply modules.

All components (excluding the LCD) are hot-swappable and field replaceable. A fully configured system will operate with a single DC PEM installed; the second PEM is required for power supply redundancy and power load sharing.

Note Proper configuration of the DC power input requires that both Input 1 and Input 2 are connected to the external power source and the GND connections are connected to the Earth GND. Input 1 and Input 2 on the DC PEMs are not redundant power inputs. If only one of the inputs is connected to the external power, the Cisco RFGW-10 UEQAM will not power-on correctly.

Cisco RFGW-10 Slot Numbering

The figures below show the slot numbering in a Cisco RFGW-10 chassis.

Figure 1-2 Cisco RFGW-10 Slot Numbering

Figure 1-3 Cisco RFGW-10 Slot/Port Numbering

Fan Assembly

The Cisco RFGW-10 UEQAM system uses a modular fan assembly to dissipate heat from the system and control the temperature of the chassis system components (except the DC PEM, which contains its own internal fan). The fan assembly is a multi-fan design that pulls ambient air from the lower front of the chassis and exhausts air out of the rear top of the chassis. The fan assembly provides individual fan control and failure monitoring, multiple thermistors to monitor exhaust air and a wide range of speed control parameters based on the system and the environmental conditions. Inlet air monitoring is communicated to the fan tray via the system software from the sensors on each of the RF line cards.

The fan tray module provides the following features:

• Online insertion and removal OIR support
• Failure monitoring of individual fans
• Backup temperature monitoring to control individual fan rotation per minute (RPM)
• Usage counter based on hours of operation (CLI-based)
• Front panel LED for alarm status indication
• Control and power circuit failure alarms
• On board multi-level fan speed control based on system temperature

The fan assembly draws air into the chassis and directs it across the internal system components. The heated air exhausts out of the rear of the chassis as shown in Figure 1-4.

Figure 1-4 Cisco RFGW-10 Airflow

The fan tray has four speed levels based on the operating control modes for the system. After power on, the fan speed is set according to the Supervisor provided ambient average air temperature and the configured speed control mode in the system configuration. The default control mode setting configures the fans at maximum speed. The speed of the fans regulate to a slower speed when the fan controller stabilizes to the ambient temperature and chassis temperature. After startup, it may take up to 30 seconds for the fans to stabilize at the requested RPM.

Figure 1-5 and Figure 1-6 show the fan assembly module. The fan tray has a single LED indicator (FAN OK) located in the center of the module. The FAN OK LED status indicators are defined in Table 1-2 :

Table 1-2 Fan Assembly LED

Figure 1-5 Cisco RFGW-10 Fan Assembly Faceplate

Figure 1-6 Cisco RFGW-10 Fan Assembly

DC PEMs

The Cisco RFGW-10 system is powered by redundant DC PEMs. An individual PEM is capable of providing 4536 watts of total output. The redundant modules work as a 1:1 redundancy configuration and support OIR (hot swapping). These modules do not support current sharing as they are non-isolated PEMs, which are diode OR'd into two separate load zones.

Each PEM includes two 60A input lines that operate between –40VDC and –60VDC input voltages. Proper configuration and operation requires that both DC inputs are properly wired. The PEM also includes an earth ground connection (this is not power return) for grounding the chassis.

Note Each DC PEM has an earth ground connection and two DC power input connections (Input 1 and Input 2). Both external DC inputs (Input 1 and Input 2) must be connected as shown in Figure 1-7. Input 1 and Input 2 are individual power inputs. Both power inputs on the PEM must be wired to external power for the Cisco RFGW-10 UEQAM to operate properly. If both inputs are not connected to external power, the Cisco RFGW-10 UEQAM will not power on.

DC PEM features:

• Closed frame, NEBS-compliant module design
• Front-to-back airflow (exhaust air exits out of the rear of the chassis)
• Power input range: –48VDC to –60VDC
• 4536W power capacity
• Supports OIR (hot swap)
• Supports 1:1 redundancy (system can run with a single PEM)
• CLI interface support for status and configuration
• Remote shutdown feature
• Front panel LED status and alarm indicators

Note When both the DC PEMs are installed, both need to operate with the breaker switches and the OUTPUT OK LED on. If one PEM is not operational, it is recommended that the PEM either be removed from the system or the power input cables be removed to limit the power supply Conductive Emissions (FCC conductive Emission Requirements).

Figure 1-7 shows the DC PEM faceplate.

Figure 1-7 DC PEM Faceplate

Table 1-3 DC PEM LEDs

Table 1-4 DC PEM Wiring Definitions

Table 1-5 lists the DC power specifications.

Table 1-5 DC Power Specifications

Specifications	Requirements
Power Input Range	Input voltage: –48 VDC or –60 VDC (nominal), range –40 to –60 VDC Recommended DC service: Four 60A services @ nominal –48 VDC or –60 VDC (two 60A services per PDU) Required Lugs: 90° angled industry standard 2-hole compression lugs with holes on 5/8- inch centers (for example, for AWG no. 4 wire: for example Panduit LCD4-14AF-L or equivalent. Caution The input wire gauge should be selected by certified electricians based on the local electrical code.
Power Consumption	Maximum system power is limited to 4536 watts (15,474.06 Btu/hour)
Thermal Requirements	Maximum Ambient Temperature must be less than 122°F (50°C)
Power Redundancy	Two DC PDUs and two DC PEMs—2N redundancy
Power Supply Ground Lug	Industry standard 2-hole compression lug with holes on 5/8- inch centers (for example, Panduit part number LCD4-14AF-L, or equivalent)

Front Panel Display

Integrated with the Cisco RFGW-10 chassis is the Front Panel Display (FPD) and Push Button Select module. The purpose of the module is to provide real time information of the chassis configuration, IOS images, alarm status and management, and general system auditing. The LCD is field upgradeable, but not hot-swappable.

Figure 1-8 shows the Cisco RFGW-10 front panel display.

Figure 1-8 Cisco RFGW-10 Front Panel Display

The FPD is a 40 character x 4 line LCD module. The push button display and status LEDs are integrated as part of the chassis front faceplate. The push button display provides the menu selection and a screen scrolling mechanism to provide navigation capabilities. The FPD navigation features are not enabled in this release of the system.

Table 1-6 Front Panel Display LEDs

Note The FPD features depend on the release of the Cisco IOS software running on the Cisco RFGW-10. The initial release of the IOS software for the Cisco RFGW-10 will include the basic FPD features, Hostname, IP Address, and IOS Version, and Customer Configured Description Field. Please refer to the release notes for the Cisco IOS release running on the platform.

Supervisor Engines

This section describes the following supervisor engines for the Cisco RFGW-10:

• Cisco Supervisor Engine V-10GE
• Cisco RFGW 10 Supervisor Engine 7-E

Cisco Supervisor Engine V-10GE

Figure 1-9 Supervisor Engine V-10GE for the DS-48 Line Card

Note The Cisco Supervisor Engine V-10GE doe not support the Cisco RFGW-10 DS-384 line card.

Supervisor Engine Components

The following connectors, LEDs, and buttons are located on the front panel of the supervisor engine:

• The STATUS LED, which indicates the operating state of the module
• Two Gigabit uplink ports
• Four SFP Gigabit uplinks ports
• Eight utilization indicator LEDs, which provide an approximation of the current traffic across the backplane
• A console port (RJ-45)
• An Ethernet management port (RJ-45)
• A link status LED, which provides status for the management port
• The Reset button (recessed), which allows you to reset the system
• The Compact Flash port and eject button

Supervisor Engine LEDs

Table 1-7 describes the meaning of the Supervisor Engine LEDs.

Table 1-7 Supervisor Engine LEDs

Ethernet Management Port

The supervisor engine has a 10/100 BASE-T Ethernet management port. The Supervisor engine uses an RJ-45 connector on the front panel with a link status LED.

Note To meet the electromagnetic interference (EMI) requirements, special UTP cables (with ferrites) should be used for SUP Console and Auxiliary ports.

TCP/IP-based management services available through inband access also are provided through this port (Telnet and SNMP). This management port also supports image download.

Note The 10/100 BASE-T Ethernet management ports are for network management only. These ports do not support network switching.

Supervisor Memory

The Cisco RFGW-10 Supervisor provides 512-MB SODIMM SDRAM, 64-MB flash memory, and 512-KB NVRAM.

Cisco RFGW 10 Supervisor Engine 7-E

Starting with Cisco IOS-XE Release 3.2.0SQ, the Cisco RFGW-10 supports a new supervisor engine for the Cisco RFGW-10 DS-384 line card.

Note The Cisco Supervisor Engine 7-E also supports the DS-48 line card.

Figure 1-10 and Figure 1-11 show the faceplate and front view of the Supervisor Engine 7-E with the major features identified.

Figure 1-10 Faceplate - Cisco RF Gateway 10 Supervisor Engine 7-E for the Cisco RFGW-10 DS-384 Line Card

Figure 1-11 Cisco RFGW Supervisor Engine 7-E

Features of the Cisco RFGW-10 Supervisor Engine 7-E

Table 1-8 Cisco RFGW-10 Supervisor Engine 7-E Features

Front Panel LED

Physical and Environmental Specifications

Table 1-10 Cisco RFGW-10 Supervisor Engine 7-E Physical and Environmental Specifications

Cisco RFGW-10 DS-48 Line Card

The Cisco RFGW-10 DS-48 line card is a QAM modulator and upconverter product designed to support DOCSIS downstream data traffic (DEPI D-MPT) and video applications (VoD, SDV, and broadcast video). The DS-48 card is similar to the traditional QAM solutions where the card receives encapsulated data, de-packetizes/re-formats the packets, maps them to the output QAM channel, and performs QAM modulation and frequency upconversion. From a high level, the DS-48 line card receives Video and DOCSIS data encapsulated over Ethernet and outputs analog QAM data to the subscriber devices (STB, DOCSIS modems).

As a DOCSIS engine, the DS-48 line card supports DEPI D-MPT mode (future SW releases may support PSP mode). DEPI is based on the L2TPv3 protocol, which includes a data plane and a control plane. DEPI data plane traffic is terminated at the line card. The Cisco RFGW-10 Supervisor terminates DEPI control and communicates the control to each line card in the system via the chassis IPC infrastructure. DOCSIS timing information (10.24MHz synchronous DTI clock) is received by the line card from the system TCC cards.

As a video engine, the DS-48 terminates video data path traffic forwarded from the Supervisor Engine (video control plane traffic is terminated and processed by the system Supervisor). The DS-48 processing path classifies video packets, performs inter QAM processing, bitrate scheduling, program muxing/scheduling, PID remapping, PCR re-stamping, and CC re-stamping.

A critical feature for the DS-48 line card is redundancy and high availability support. The line cards are designed to detect and react to a wide range of faults and failures and respond with sub-second failover to a dedicated protect card.

The DS-48 line card is designed to support a wide range of line card health conditions and initiate failover events if considered catastrophic:

• QAM/upconverter HW failure. The line card monitors both the digital and RF data integrity. The modules also provide a comprehensive alarm structure to the system CPU, which allows constant monitoring of the UPX.
• Environmental alarms (temperature, voltage, frequency).
• Software kernel failures.
• Software module failure.
• DTI Clock/Timing failures (both internal and external).
• SFP failures.

The DS-48 line card has 12 physical RF ports, which support up to four QAMs per port. The number of QAM outputs is configurable on a per port basis (meaning an individual port can support 1, 2, or 4 QAMs as well as muting of individual QAMs within a QAM group). In stacked QAM mode, the QAMs are stacked contiguously over a 24-MHz or 32-MHz band. The line card supports a downstream channel frequency range of 88 MHz to 870 MHz.

The front panel includes two 1xGE ports and a single DVB-ASI interface (covers all video output streams). The front panel connectors support both copper and fiber SFP modules. The front panel GE ports are not processed directly by the line card, these are independent of the line card and route directly to the Supervisor switch fabric. These ports do not become out of service if the line card crashes and a failover to the redundant card occurs.

DS-48 Line Card Components

The following connectors and LEDs are located on the front panel of the DS-48 line card:

• STATUS LED that indicates the operating state of the line card
• ALARM LED that indicates the general health of the line card
• TRAFFIC LED that indicates whether the card is a primary (working card) or a protect card
• LINK LED that indicates whether the link is operational
• DVB-ASI BNC Coax Interface
• Two SFP Gigabit uplink ports

Table 1-11 DS-48 Line Card LEDs

Figure 1-12 shows the DS-48 faceplate.

Figure 1-12 DS-48 Line Card Faceplate

Cisco RFGW-10 DS-384 Line Card

For information about the Cisco RFGW-10 DS-384 line card, see Cisco RF Gateway 10 Downstream 384 Line Card Hardware Installation Guide.

TCC/DTI Card

The Cisco RFGW-10 UEQAM supports two Timing, Communication, and Control (TCC) slots. The TCC card acts as a secondary processor that controls the overall system clock generation and distribution, DOCSIS timestamp synchronization, and system control of the Front Panel Display (FPD) and the RF Switch cards.

The TCC card’s most critical function is distribution of the system clocking, in particular the DTI interface. The TCC card is a DTI client interface. It supports dual DTI external input allowing DTI server redundancy. Based on the DTI input information, the TCC card generates DOCSIS 10.24-MHz clock and timestamp information to every line card in the chassis. All clocks and DOCSIS information are redundant. When there is no external DTI clock, the TCC provides an internal DOCSIS DTI clock and time stamp reference.

When two TCC cards are installed, they are configured as active and backup (redundant). If the TCC card in the first slot is working at system power-up, it automatically becomes the active card and the TCC card in the second slot becomes the backup card (typically Slot 13 boots as the primary TCC and Slot 14 as the secondary, but this is not mandatory).

In terms of the overall system high availability, the TCC cards work autonomously from the centralized control mechanisms. Redundant TCC cards monitor each other’s priority information so that when the active card fails, the active card role is transferred to the redundant backup card without loss of data.

The following is a summary of the TCC card’s functions and features:

• Generates and distributes 10.24 MHz clock references and 32-bit timestamp references to every cable interface line card
• Drives the LCD module used to display the system configuration and status information
• Proxy control mechanism (via supervisor cards) for the RF Switch Cards
• Front Panel LEDs providing Status and Alarm Indicators
• Provides two RJ-45 ports supporting redundant DTI server sources

Table 1-12 TCC Card LEDs

Note There are two LEDs for each DTI port (ACK and LINK). Only one of these can be on at a time.
The upper LED (ACK) indicates whether the RFGW-TCC is connected (linked) with the DTI server. It does not indicated a frequency lock with the DTI server. Yellow illumination indicates a positive communication link with the server. The lower LED (LINK) can either be green or off. When green, it indicates that the DTI client has established connection with the server and the frequency is locked.
A typical transition of the LEDS is the ACK LED illuminates yellow (linked) after the system comes up and when the DTI frequency is locked, the ACK LED becomes off and the LINK LED illuminates green.

Figure 1-13 and Figure 1-14 show the TCC/DTI Card.

Figure 1-13 TCC Card Faceplate

Figure 1-14 TCC/DTI Card

RF Switch Card

The RF Switch provides RF data path redundancy at both the line card (slot) level and the RF port level for bi-directional DOCSIS traffic upto 1.2 GHz. Additionally, the RF Switch cards are the coaxial cable termination point for the Cisco RFGW-10.

Functionally the RF Switch card physically switches out a failed line card (port by port) at the RF data path level. The card is capable of supporting (two) simultaneous RF line card failures. It is designed to support dual N+1 redundancy groups (where N is a group of RF line cards associated with a single “protect” card).

There are 12 RF Switch cards per chassis providing 120 RF ports for the system (Note: the chassis MUST include all 12 RF Switch cards for proper operation). Each Switch Card supports a single Cisco UCH2 connector header; the UCH2 supports 10 MCX coaxial connections per card. The RF Switch card is physically separate from the RF line cards slots allowing insertion or removal of the RF line cards without disruption of the cable plant wiring.

The RF Switch Card is the central hardware component for chassis-level HA features. The card can be configured and controlled via the system level CLI functionality. The RF Switch card is a hardware and firmware based module (no operating software) that can be field upgraded via the chassis CLI.

The RF Switch Card faceplate includes a single LED, which provides very high level status for power and functionality. The LED does not indicate a line card failover.

Figure 1-15 and Figure 1-16 show the RF Switch Card.

Figure 1-15 RF Switch Card Faceplate

Figure 1-16 RF Switch Card

The RF Switch Card supports the following features:

• 10 RF bi-directional RF ports per RF Switch card

– System support for 12 RF Switch cards, 120 RF Ports per chassis

– Wire once interface: Coax cables are independent of the RF card insertion and removal

• OIR (Hot Swap) and field upgradeability
• Supports SW field upgrades
• Exceeds DOCSIS DRFI compliance requirements over 5 MHz to 1.2 GHz frequency range
• No active gain in any switch path
• Support for Cisco UCH2 Dense (MCX) connector
• Upto two flexible redundancy groups, each capable of N:1
• LED to indicate RF Switch’s active or fail mode
• CLI support for configuring and monitoring the status information

Table 1-13 Status LEDs

Lineage AC-DC Power Shelf

The external Lineage AC-DC power shelf (part number J85480S1 L21) with AC module (CP2725TEZ or CP2000AC54PE) is one-rack unit high (1.75 inch), and can be mounted on a standard 19-inch 4-post equipment rack or telco-type rack. It is recommended that the Lineage power shelf is installed such that the power connections face inside of the rack when viewed from the front. This allows the DC output terminals of the external AC-input power shelf to be on the same side as the DC-input terminals of the Cisco RFGW-10 chassis.

The Lineage AC-DC power shelf has two DC power sources, four AC-input power supply sources, and J1 and J2 Jumper connectors. The J1 connector is used to connect a control interface cable and J2 connector is used for a shelf-to-shelf connection.

Note Jumpers must be removed prior to inserting a connector into the J1 housing.

Each AC-input power supply module is automatically powered on when it is plugged into the wall socket. (See Figure 1-17).

Figure 1-17 Lineage AC-DC Power Shelf - Front and Rear View

All cable connections for AC-input power, DC-output power, and status signals are made from the rear of the power shelf. Each AC power supply module has an individual AC facility cord attachment. All four AC-input cords must be attached to the facility for all four AC power modules to function. The DC-interconnect cables provide DC-output power to the DC PEM modules on the Cisco RFGW-10. (See Figure 1-18).

Note The AC-input and DC-output power cables are supplied along with the Lineage kit. It is recommended that you use these cables for cabling the shelf to the Cisco RFGW-10.

Figure 1-18 Rear View of the Lineage AC-DC Power Shelf with Cables

To meet compliance standards, use the DC power cables (3 m cable supplied along with the Lineage power shelf) while cabling the Lineage AC-DC power shelf to the Cisco RFGW-10.

For information on connecting the Lineage power shelf see, Connecting the Lineage Power Shelf to the Cisco RFGW-10.