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Before installing your Cisco 7200 VXR router you should consider the power and cabling requirements that must be in place at your installation site, the equipment you need to install the router, and the environmental conditions your installation site must meet to maintain normal operation. This chapter guides you through the process of preparing for your router installation.
The chapter contains the following sections:
Your Cisco 7200 VXR chassis is fully assembled at the factory; no assembly is required. However, you need the following tools and equipment to install the chassis and the rack-mount and cable-management kit:
The rack-mount and cable-management kit includes the following parts:
In addition, you might need the following external equipment:
The port adapters and power supplies are designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system. However, you must power down the system before removing or replacing the I/O controller and network services engine (NSE) or network processing engine (NPE).
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Caution Always tighten the captive installation screws on the network processing engine or network services engineand I/O controller. (See Figure 1-2.) These screws prevent accidental removal, provide proper grounding for the system, and help ensure that the bus connectors are properly seated in the midplane. |
Planning a proper location for the Cisco 7200 VXR router and the layout of your equipment rack or wiring closet is essential for successful system operation. Equipment placed too close together or inadequately ventilated can cause system overtemperature conditions. In addition, chassis panels made inaccessible by poor equipment placement can make system maintenance difficult. Following are precautions that can help avoid problems during installation and ongoing operation.
When you plan the location and layout of your equipment rack or wiring closet, you need to consider how air flows through your router. The Cisco 7200 VXR routers draw cooling air in through the intake vent on the right side of the chassis (when you view the router from the front), and move the air across the internal components and out the exhaust vent on the left side of the chassis.
Temperature sensors on the network processing engine and I/O controller monitor the internal air temperature and send warning messages when the internal air temperature approaches a specified threshold. If the internal temperature exceeds the specified threshold, the system environmental monitor shuts down all internal power to prevent equipment damage from excessive heat. (See the "Environmental Monitoring and Reporting Functions" section for temperature threshold information.)
Figure 2-1 shows the airflow through the router.
The left and right sides of the chassis must remain unobstructed to ensure adequate air flow and prevent overheating inside the chassis; we recommend at least 3 in. (7.62 cm) of clearance.
Follow these general precautions when planning your equipment locations and connections:
The following sections address the site environment requirements for the Cisco 7200 VXR routers.
Before installing the Cisco 7200 VXR router in a rack, read the Site Preparation and Safety Guide to familiarize yourself with proper site and environmental conditions. Failure to read and follow the guidelines could lead to an unsuccessful installation and possible damage to the router and components.
The rack-mounting hardware included with Cisco 7200 VXR routers is suitable for most 19-inch equipment racks and telco-type racks. To easily access FRUs while the router is installed in a rack, make certain you have access to the front and rear of the router.
Before using a particular rack, check for obstructions (such as a power strip) that could impair rack-mount installation. If a power strip does impair a rear rack-mount installation, remove the power strip before installing a Cisco 7200 VXR router in the rack, and then replace it after the chassis is installed. As an alternative, you can mount a Cisco 7200 VXR router on an equipment shelf provided that the rack dimensions allow you to secure the router to the shelf, and the overall configuration permits safe installation and access. However, we recommend rack-mounting Cisco 7200 VXR routers. Figure 2-2 shows the Cisco 7200 VXR router footprint and outer dimensions.
To use the rack-mounting hardware provided with the Cisco 7200 VXR routers, consider the following guidelines:
When planning your rack installation, consider the following guidelines:
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Note We strongly recommend that you provide a chassis ground connection. See the "Attaching a System Ground Connection" section" in "Installing a Cisco 7200 VXR Router" for instructions. |
In addition to the preceding guidelines, review the precautions for avoiding overtemperature conditions in the following section, "Temperature and Humidity Requirements." To properly install a Cisco 7200 VXR chassis in a rack, see the instructions in the "Rack-Mounting a Cisco 7200 VXR Router" section in ""Installing a Cisco 7200 VXR Router."
Table 2-1 lists the operating and nonoperating environmental site requirements. The ranges listed are those within which the Cisco 7200 VXR routers continue to operate; however, a measurement that is approaching the minimum or maximum of a range indicates a potential problem. You can maintain normal operation by anticipating and correcting environmental anomalies before they approach a maximum operating range.
| Specification | Minimum | Maximum |
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Temperature, ambient operating | 32° F (0° C) | 104° F (40° C) |
Temperature, ambient nonoperating and storage | -4° F (-20° C) | 149° F (65° C) |
Humidity, ambient (noncondensing) operating | 10% | 90% |
Humidity, ambient (noncondensing) nonoperating and storage | 5% | 95% |
Altitude, operating, and nonoperating | Sea level | 6,500 ft. |
Vibration, operating | 5-200 Hz, 0.5 g (1 octet/min.) | --- |
Vibration, nonoperating | 5-200 Hz, 1 g (1 octet/min.) 200-500 Hz, 2 g (1 octet/min.) | --- |
Follow these precautions and recommendations when planning power connections to a Cisco 7200 VXR router:
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Note The Cisco 7200 VXR router installation must comply with all applicable codes and is approved for use with copper conductors only. The ground bond fastening hardware should be of compatible material and preclude loosening, deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to a central office or other interior ground system should be made with a 6-AWG, copper ground conductor at a minimum. The Cisco 7200 VXR chassis employs two threaded M5 chassis grounding receptacles, located on the rear of the chassis, which are intended to be bonded directly to the central offices or other interior ground system. The chassis ground requires M5 screws and locking hardware, which are not included. (For instructions on how to properly ground the chassis, see the "Attaching a System Ground Connection" section in "Installing a Cisco 7200 VXR Router.") |
Following are guidelines for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the distance limitations for signaling, EMI, and connector compatibility, as described in the following sections.
When wires are run for any significant distance in an electromagnetic field, interference can occur between the field and the signals on the wires. This fact has two implications for the construction of plant wiring:
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Note To predict and remedy strong EMI, you may also need to consult experts in radio frequency interference (RFI). |
If you use twisted-pair cable in your plant wiring with a good distribution of grounding conductors, the plant wiring is unlikely to emit radio interference. If you exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.
If wires exceed recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and shielding.
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Note We recommend that you do not exceed specified transmission rate and distance limits. |
When preparing your site for network connections to a Cisco 7200 VXR router, you must consider a number of factors related to each type of interface:
The specific interface information you need is contained in the documentation that is shipped with each port adapter. For example, if you need ATM distance limitations and pinouts, refer to the PA-A3 Enhanced ATM Port Adapter Installation and Configuration document. This document accompanies each PA-A3 port adapter that is shipped from the factory as an installed item in a Cisco 7200 VXR router and as a FRU.
Before installing a Cisco 7200 VXR router, have all additional external equipment and cables on hand. For ordering information, contact a customer service representative.
After you install the chassis and verify that all the hardware is operating properly, you must configure the system and individual interfaces before you can connect your system to external networks. You can use the setup command facility or standard configuration commands to enter the configuration information.
Before you begin, you should be prepared with global (system-wide) parameters such as host names, passwords, and routing protocols, and configuration information for each interface such as addresses, rates or speeds of operation, routing protocol specifics, and so on.
Following is some of the information you are likely to need, depending on your configuration:
For complete configuration instructions, refer to the Configuration Fundamentals Configuration Guide and the Configuration Fundamentals Command Reference, which are available on the Documentation CD-ROM or in print.
To assist you with your installation and to provide a historical record of what was done by whom, use the Cisco 7200 VXR Router Installation Checklist in Table 2-2. Make a copy of this checklist and indicate when each procedure or verification is completed. When the checklist is completed, place it in your site log (described at the end of this chapter) along with the other records for your new router.
| Task | Verified By | Date |
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Date router received |
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Router and all accessories unpacked |
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Types and numbers of interfaces verified |
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Safety recommendations and guidelines reviewed |
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Installation Checklist copied |
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Site log established and background information entered |
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Site power voltages verified |
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Site environmental specifications verified |
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Required passwords, IP addresses, device names, and so on, available |
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Required tools available |
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Network connection equipment available |
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Router mounted in rack (optional) |
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Cable-management brackets installed (optional but recommended) |
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AC power cable(s) connected to AC source(s) and router; retention clip secured |
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DC power cable(s) connected to DC source(s) and router |
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Captive installation screws on I/O controller and network processing engine checked |
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Network interface cables and devices connected |
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ASCII terminal attached to console port |
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Console port set for 9600 baud, 8 data bits, no parity, and 2 stop bits (9600 8N2) |
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System power turned on (DC OK LED is on) |
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System boot complete (I/O controller enabled LED is on) |
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I/O controller, network processing engine or network services engine, and all port adapters operational (enabled LEDs on the port adapters and the I/O controller are on) |
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Correct hardware configuration displayed after system banner appears |
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System ready for global and interface-specific configuration |
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Once you receive your Cisco 7200 VXR router, use the following procedure to check the contents of the shipping container. Use the Cisco 7200 VXR Component List in Table 2-3 to ensure you received all the components you ordered.
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Note Do not discard the shipping container. You need the container if you move or ship the Cisco 7200 VXR router in the future. |
Step 2 Check the contents of the accessories box against the Cisco 7200 VXR Component List and the packing slip to verify that you received all listed equipment, which should include the following:
Step 3 Verify that the port adapters installed in your Cisco 7200 VXR router match the port adapter types on the packing list.
Step 4 Proceed to the "Site Log" section, and then to "Installing a Cisco 7200 VXR Router" to begin the installation.
| Component | Description | Received |
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Chassis | Cisco 7204VXR or Cisco 7206VXR chassis configured with a network processing engine, I/O controller, up to two AC or DC power supplies, up to four port adapters for the 4-slot chassis or up to six port adapters for the 6-slot chassis (blank port adapters should be installed in empty port adapter slots), and up to two PCMCIA Flash Disks or Flash memory cards. |
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Accessories:
| The following accessories might arrive in separate shipping containers: Two rack-mount brackets, two cable-management brackets, eight M4 x 8-mm Phillips flathead screws, and six 10-32 x 3/8-inch slotted binderhead screws Up to two power cables If ordered, router hardware and software documentation set and the Cisco Documentation CD-ROM package1 |
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| 1Titles and quantities of documents will vary. You must order the type and quantity of documentation sets when you order the hardware. |
Table 2-4 shows a sample site log page. Make copies of the sample or design your own site log to meet the needs of your site and equipment.
| Date | Description of Action Performed or Symptom Observed | Initials |
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Posted: Thu Mar 30 13:29:10 PST 2000
Copyright 1989 - 2000©Cisco Systems Inc.
