This table lists the components of Cisco ASR 9902 router:

The router consists of the fixed board or line card with 48 ports. The 48 ports are grouped in slice 0 and slice 1. The slice 0 is color coded in blue, and slice 1 in purple. All ports support MACSec:

Note	A slice is a logical grouping of physical ports.

• 2 ports that support QSFP-DD-based 100GE pluggables

• 6 ports that support QSFP28-based 100GE pluggables

• 16 ports that support SFP28-based 25GE/10GE dual-rate pluggables

• 24 ports that support SFP+- based LAN/WAN (OTN) pluggables

• Never attempt to lift an object that might be too heavy for you to lift by yourself.

• Always disconnect the power source and unplug all power cables before lifting, moving, or working on the router.

• Keep the work area clear and dust free during and after installation.

• Keep tools and router components away from walkways and equipment rack aisles.

• Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the router.

• Fasten your tie or scarf and sleeves.

• Operate Cisco equipment safely by using it in accordance with its electrical ratings and product usage instructions.

• Do not work alone if potentially hazardous conditions exist.

• Always unplug power cables when performing maintenance or working on the router, unless the replacement part is hot swappable and designed for online insertion and removal (OIR).

• Ensure that the installation of the router is in compliance with national and local electrical codes: in the United States, National Fire Protection Association (NFPA) 70, United States National Electrical Code; in Canada, Canadian Electrical Code, part I, CSA C22.1; in other countries, International Electrotechnical Commission (IEC) 364, part 1 through part 7.

The Cisco ASR 9901, ASR 9001, and ASR 9901-S Routers are designed to meet the regulatory compliance and safety approval requirements. See the Regulatory Compliance and Safety Information - Cisco ASR 9000 Series Aggregation Router.

Warning

Statement 1071—Warning Definition IMPORTANT SAFETY INSTRUCTIONS Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Read the installation instructions before using, installing, or connecting the system to the power source. Use the statement number at the beginning of each warning statement to locate its translation in the translated safety warnings for this device. SAVE THESE INSTRUCTIONS

The fixed-configuration ports on the Cisco ASR 9901 and the line card ports on the Cisco ASR 9001 Router are equipped with lasers. The lasers emit invisible radiation. Do not stare into open ports. Observe this warning to prevent eye injury:

Warning

Statement 1051—Laser Radiation Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments.

The Cisco ASR 9901 and Cisco ASR 9001 Router can be configured for a DC power source. Do not touch terminals while they are live. Observe this warning to prevent injury.

Warning

Statement 1086—Replace Cover on Power Terminals Hazardous voltage or energy may be present on power terminals. To reduce the risk of electric shock, make sure the power terminal cover is in place when the power terminal is not being serviced. Be sure uninsulated conductors are not accessible when the cover is in place.

Many router components can be damaged by static electricity. Not exercising the proper electrostatic discharge (ESD) precautions can result in intermittent or complete component failures. To minimize the potential for ESD damage, always use an ESD-preventive antistatic wrist strap (or ankle strap) and ensure that it makes good skin contact.

Note	Check the resistance value of the ESD-preventive strap periodically. The measurement should be between 1 and 10 megohms.

Before you perform any procedure in this guide, attach an ESD-preventive strap to your wrist and connect the leash to the chassis as shown in the figure below.

A fully-configured Cisco ASR 9903 can weigh as much as 70 pounds (31.75 kg.)A fully-configured Cisco ASR 9901 can weigh as much as 55.97 pounds (25.4 kg). A fully-configured Cisco ASR 9001 Router can weigh as much as 37.91 pounds (17.2 kg). These systems are not intended to be moved frequently. Before you install the router, ensure that you have planned the installation and migration of the router into your network so that you can avoid having to move the router later to accommodate power sources and network connections.

Use these lifting guidelines to avoid injury to yourself or damage to the equipment:

• Do not lift equipment alone; have another person help you to lift the equipment.

• Ensure that your footing is solid; balance the weight of the object between your feet.

• Lift the equipment slowly; never move suddenly or twist your body as you lift.

• Keep your back straight and lift with your legs, not your back. When bending down to lift equipment, bend at the knees (not at the waist), to reduce the strain on your lower back muscles.

Warning

Statement 1032—Lifting the Chassis To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules, such as power supplies, fans, or cards. These types of handles are not designed to support the weight of the unit.

The RP has two EIA/TIA-232 (formerly RS232) serial RJ-45 connection ports:

• Console port—RJ-45 interface for connecting a data terminal device to the router, which you need to perform the initial configuration of the router.

• Auxiliary port—RJ-45 interface for connecting a modem.

Note	The console and auxiliary ports are asynchronous serial ports. Ensure that devices connected to these ports are capable of asynchronous transmission.

The RP has two RJ45 media-dependent interface (MDI) Ethernet management LAN ports: MGT LAN 0 and MGT LAN 1.

These ports are used for IEEE 802.3 10BASE-T (10 Mbps), IEEE 802.3u 100BASE-TX (100 Mbps), or 1000BASE-T (1000 Mbps) Ethernet connections.

The transmission speed of the management LAN ports is not user-configurable. The transmission speed is set through an auto-sensing scheme on the RP; the speed is determined by the network to which that the Ethernet port is connected. The combined total input rate of both MGT LAN 0 and MGT LAN 1 is about 12 Mbps.

Note	In 32-bit IOS XR OS, the management interfaces are available from XR VM. In 64-bit IOS XR OS, the Management ports on the RP/RSP are available as follows: MGT LAN 0 is available in XR VM. MGT LAN 1 is available in Admin VM.

Management port characteristics are:

• Maximum transmission unit (MTU) is fixed at 1514 and cannot be configured.

• Flow control is disabled and cannot be configured.

• Input unicast packets with an unknown destination address are filtered and dropped.

• Autonegotiation of port speed (10/100/1000) and duplex (full/half) is supported. Autonegotiation cannot be disabled.

The following table lists the signals used on the Management LAN ports.

The SYNC 0 and SYNC 1 ports are timing synchronization ports. They can be configured as Building Integrated Timing Supply (BITS) ports or J.211 ports.

Note	Both ports must be configured to be in the same mode. It is not possible to use external BITS and J.211 sources at the same time.

When configured as BITS ports, they provide connections for an external synchronization source. Such connections are for establishing precise frequency control at multiple network nodes, if required for your application. The RP card contains a synchronous equipment timing source (SETS) that can receive a frequency reference from an external BITS timing interface or from a clock signal recovered from any incoming Gigabit Ethernet or 10-Gigabit Ethernet interface. The RP SETS circuit filters the received timing signal and uses it to drive outgoing Ethernet interfaces.

The BITS input can be T1, E1 or 64K 4/. The BITS output can be T1, E1 or 6.312M 5/.

When configured as J.211 ports, they can be used as Universal Timing Interface (UTI) ports to synchronize timing across multiple routers by connecting to an external timing source.

The router has an external USB Type A slot accessible on the front panel. The front panel USB slot accepts widely available USB thumb drives. The only restriction on devices you can plug into the front panel external USB slot is that they need to be USB 2.0 devices. These devices can be formatted with FAT16, FAT32 or QNX4 file systems.

The mount point /disk1: is reserved for the front panel USB device.

Note	Do not connect a USB hub device to the front panel USB port.

To help maintain trouble-free operation, adhere to these precautions and guidelines when planning your rack installation:

• Install the system in a restrictive access location with means for a permanent grounding.

• Ensure the site of the rack includes provisions for source AC or DC power, grounding, and network interface cables.

• Allow sufficient space to work around the rack during the installation. You need at least 3 feet (91.44 cm) adjacent to the rack to move, align, and insert the chassis.

• Maintain at least 24 inches (61 cm) of clearance in front of, and behind the chassis for maintenance after installation.

• To mount the router between two posts or rails, the usable aperture (the width between the inner edges of the two mounting flanges) must be at least:

  • 17.75 inches (45.09 cm) for the Cisco ASR 9902 Router

  • 17.7 inches (45 cm) for the Cisco ASR 9001 Router

  • 17.75 inches (45.09 cm) for the Cisco ASR 9901 Router.

• Height of the:

  • Cisco ASR 9902 Router is 3.45 inches (8.77 cm)

  • Cisco ASR 9903 Router is 5.25 inches (13.34 cm)

  • Cisco ASR 9901 Router and Cisco ASR 9001 Router is 3.47 inches (8.8 cm)

• When fully populated with cards, the router can weigh as much as 37.91 pounds (17.2 kg), Cisco ASR 9902 Router can weigh as much as 42.19 pounds (19.14 kg). To maintain equipment rack stability and to ensure your safety, the rack is provided with stabilizing devices. Make sure you install the stabilizers before installing the router.

• If you use a telco-style rack, the weight of the chassis is cantilevered off the two rack posts. Make sure that:

  • Weight of the router does not make the frame unstable.

  • Frame is bolted to the floor and is secured to the building structure using either wall brackets or overhead brackets.

• When mounting the router in a telco-style rack or 4-post rack, be sure to use all the screws provided to secure the chassis to the rack posts.

• Install the cable-management brackets included with the router to keep cables organized. Be sure to use appropriate strain-relief methods to protect cables and equipment connections.

• To avoid noise interference in network interface cables, do not route them directly across or along power cables.

The following figures show the the chassis footprint and dimensions:

When planning the location of the router, consider distance limitations for signaling, electromagnetic interference (EMI), and connector compatibility. If the wiring is run for any significant distance in an electromagnetic field, interference can occur between the field and the signals on the wires. Poor wiring can cause:

• Radio interference emanating from the wires.
• Strong EMI, especially when caused by lightning or radio transmitters. EMI can destroy the signal drivers and receivers in the router, and can even create an electrical hazard by conducting power surges through lines and into equipment.

Note	To predict and remedy strong EMI, you may need to consult with radio frequency interference (RFI) experts.

Site wiring is unlikely to emit radio interference if you use twisted-pair cable with good distribution of grounding conductors. Use a high-quality twisted-pair cable with one ground conductor for each data signal, when applicable.

Give special consideration to the effect of lightning strikes in your vicinity, especially if the wiring exceeds recommended distances, or if it passes between buildings. The electromagnetic pulse (EMP) caused by lightning or other high-energy phenomena can easily induce enough energy into unshielded conductors, and destroy electronic devices. If you have experienced EMP problems in the past, you may want to consult experts in electrical surge suppression and shielding.

Most data centers cannot resolve infrequent, but potentially catastrophic, problems without pulse meters and other special equipment. In addition, these problems can take a great deal of time to identify and resolve. We recommend that you take the necessary precautions to avoid these problems by providing a properly grounded and shielded environment, with special attention to issues of electrical surge suppression.

The router can be mounted in most 2-post, 4-post, or telco-style 19-inch equipment racks that comply with the Electronics Industries Association (EIA) standard for equipment racks (EIA-310-D). The rack must have at least two posts with mounting flanges to mount the router chassis. The distance between the center lines of the mounting holes on the two mounting posts must be 18.31 inches ± 0.06 inch (46.50 cm ± 0.15 cm).

The following figure shows examples of typical 2-post, 4-post, and telco-type equipment racks.

The operating and nonoperating environmental site requirements are listed in Environmental Specifications. The router normally operates within the ranges listed in Environmental Specifications; however, if a temperature measurement is approaching a minimum or maximum parameter, it indicates a potential problem. Maintain normal operation by anticipating and correcting environmental anomalies before they approach critical values, by properly planning and preparing your site before you install the router.

You can configure the router with either an AC-input or DC-input power subsystem, so the site power source requirements differ depending on the power subsystem in your router. Ensure all power connection wiring conforms to the rules and regulations in the National Electrical Code (NEC) as well as local codes.

Caution

Each Cisco ASR 9902, Cisco ASR 9903, Cisco ASR 9901, or Cisco ASR 9001 Router is powered by only one type of input: AC or DC. A hybrid (AC+DC) power configuration is not supported.

Caution

Proper grounding is necessary to avoid damage from lightning and power surges. See NEBS Supplemental Unit Bonding and Grounding Guidelines for grounding requirements.

You must permanently connect the central office ground system or interior equipment grounding system to the supplemental bonding and grounding connection on the side of the router chassis to meet network equipment building system (NEBS) requirements as well as safety compliance requirements. These grounding points are referred to as the NEBS bonding and grounding points.

Note

These bonding and grounding connections satisfy the Telcordia NEBS requirements for supplemental bonding and grounding connections. For an AC powered router, if you are not installing the router in a NEBS environment, you can choose to bypass these guidelines and rely on the safety earth ground connections to the AC power modules.

The following figures show the NEBS grounding locations on the respective routers:

To ensure a satisfactory supplemental ground connection to the router, use these parts:

• Cisco ASR 9902 and Cisco ASR 9903 Router - One grounding lug, which has two M5 bolt holes with 0.625- to 0.75-inch (15.86- to 19.05-mm) spacing between them, and a wire receptacle large enough to accept a six AWG or larger, multistrand copper wire. For four AWG cable, use Panduit part number LCD4-14AF-L; for six AWG, use Panduit part number LCD6-14AF-L.

• Cisco ASR 9901 Router and Cisco ASR 9001 Router - One grounding lug, which has two M6 bolt holes with 0.625- to 0.75-inch (15.86- to 19.05-mm) spacing between them, and a wire receptacle large enough to accept a six AWG or larger, multistrand copper wire. For four AWG cable, use Panduit part number LCD4-14AF-L; for six AWG, use Panduit part number LCD6-14AF-L.

• Two 10-32 round-head screws and two locking washers (nickel-plated brass is ideal).

• One grounding wire. Although we recommend at least six AWG multistrand copper wire, the wire diameter and length depend on your router location and site environment. This cable is not available from Cisco Systems; it is available from any commercial cable vendor.