The JCS1200 Control System is a high-density, high-performance rack-mounted control
and Routing Engine platform. The JCS1200 platformprovides 12 bays for Routing Engines
and other JCS1200 platform components, integrating common resources that are shared
by the Routing Engines. The use of common resources provides a small server-system
footprint that contains high-performing servers with minimal cabling.
The JCS1200 platform is a modular, rack-mountable system. The JCS1200 platform is
shipped in a wooden crate. A wooden pallet forms the base of the crate. The JCS1200
chassis is bolted to this pallet. The shipping crate contains:
Quick Start Description
WARNING: This Quick Startcontains a summary ofsafety warningsin “Safety
Warnings” on page 25. For a complete list of warnings for this platform,
including translations, see the JCS1200 Control System Hardware Guide at
http://www.juniper.net/techpubs/hardware/.
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One accessory box (the box to which this Quick Start is taped)
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One Juniper Networks JCS1200 platform
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One Quick Start (this document)
Step 1: Prepare the Site
Before installing the JCS1200 platform, make sure that the site meets all the power,
environmental, and clearance requirements. See the site preparation guidelines in the
JCS1200 Control System Hardware Guide.
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Rack-Mounting Requirements on page 3
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Tools Required to Install the JCS1200 Platform on page 4
Rack-Mounting Requirements
The JCS1200 platform can be installed in many types of racks. Follow these guidelines:
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The rack rails must be spaced widely enough to accommodate the JCS1200 chassis's
external dimensions: 20.7 in. (53.34 cm) high, 27.75 in. (70.5 cm) deep, and 17.43 in.
(44.3 cm) wide.
NOTE: This Quick Start explains how to integrate an offline T Series Core
router with the JCS1200 platform. For more information, see the JCS1200
Control System Hardware Guide at http://www.juniper.net/techpubs.
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The rack must be strong enough to support the weight of the fully configured JCS1200
platform, up to about 350 lb (158.8 kg).
If you must install another device in the rack, consider the height and weight of the
JCS1200 platform and the cable management above the chassis, including the optional
cable shelf assembly.
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For service personnel to remove and install hardware components, there must be
adequate space at the front and back of the JCS1200 platform. Allow at least 24 in.
(61.0cm) both in front of and behind the JCS1200 platform.NEBS GR-63 recommends
at least 30 in. in front of the JCS1200 platform (see Figure 1 on page 4).
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The rack or cabinet must have an adequate supply of cooling air.
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In a closed cabinet, there must be a minimum of 6 in. (15.2 cm) of unobstructed airflow
behind the JCS1200 platform,or airflow bafflesmust be installed to prevent recirculation
of hot air and overheating.
Figure 1: Chassis Dimensions and ClearanceRequirementsfor the JCS1200
Platform
Rack Mounting Hole Locations for the JCS1200 Platform on page 5
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Install the JCS1200 Mounting Hardware in a Four-Post Rack or Cabinet on page 6
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Install the JCS1200 Mounting Hardware in an Open-Frame Rack on page 7
Rack Mounting Hole Locations for the JCS1200 Platform
Table 1 on page 5 specifies the holes in which you insert mounting screws (and cage
nuts if needed) to install the mounting hardware required in a four-post or two-post
open-frame rack (an X indicates a mounting hole location).The hole distances are relative
to one of the standard U divisions on the rack. The bottom of all mounting shelves is at
0.04 in. (0.02 U) above a U division.
Table 1: Open-Frame Rack Mounting Hole Locations
Step 2: Install the JCS1200 Mounting Hardware
Large
ShelfDistance Above U DivisionHole
X9.86 U17.26 in. (43.8 cm)30
X8.86 U15.51 in. (39.4 cm)27
X2.86 U5.01 in. (12.7 cm)9
X1.86 U3.26 in. (8.3 cm)6
Small
ShelfChassis
XX7.86 U13.76 in. (34.9 cm)24
XX6.86 U12.01 in. (30.5 cm)21
XX5.86 U10.26 in. (26.0 cm)18
XX4.86 U8.51 in. (21.6 cm)15
XX3.86 U6.76 in. (17.1 cm)12
XX0.86 U1.51 in. (3.8 cm)3
XX0.50 U0.88 in. (2.2 cm)2
Related
Documentation
X0.14 U0.25 in. (0.6 cm)1
JCS1200 Platform Rack-Mounting Hardware•
• Rack-Mounting Requirements and Warnings for the JCS1200 Platform
• Installing the JCS1200 Mounting Hardware for a Four-Post Rack or Cabinet
• Installing the JCS1200 Mounting Hardware for an Open-Frame Rack
Install the Large Mounting Shelf in a Four-Post Rack or Cabinet
Install the Large Mounting Shelf in a Four-Post Rack or Cabinet
1. On the front of each front rack rail, partially insert a mounting screw into the hole
containing the lowest cage nut.
2. Install the large shelf on the front rack rails. Rest the bottom slot of each ear on a
mounting screw.
3. Partially insert a mounting screw into the holes 3, 6, 9, and 30 in each ear of the large
shelf.
4. Tighten all the screws completely.
Install the Small Mounting Shelf in a Four-Post Rack or Cabinet
1. On the back side of each rear rack rail, partially insert a mounting screw into the hole
containing the lowest cage nut.
2. Install the small shelf on the back rack rails. Rest the bottom slot of each ear on a
mounting screw. The small shelf installs on the back of the rear rails, extending toward
the center of the rack. The bottom of the small shelf should align with the bottom of
the large shelf.
3. Partially insert screws into the open holes in the ears of the small shelf.
4. Tighten all the screws completely.
Install the Mounting Brackets on the JCS1200 Platform
Attach the front-mounting brackets to the side of the chassis using six of the mounting
screws provided.
Install the JCS1200 Mounting Hardware in an Open-Frame Rack
For open-frame racks, center-mounting provides more even weight distribution and
stability. The small mounting shelf is not needed for open-frame racks.
3. Partially insert screws into the rest of the holes specified in Table 1 on page 5 for
each ear of the large shelf.
4. Tighten all the screws completely.
Install the Mounting Brackets on the JCS1200 Platform
The JCS1200 platform is shipped with two front-mounting and two center-mounting
brackets.
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If you plan to front-mount the chassis in an open-frame rack, attach the front-mounting
brackets to the side of the chassis using six of the mounting screws provided.
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If you plan to center-mount the chassis in an open-frame rack, attach the
center-mounting brackets to the side of the chassis using the eight mounting screws
provided.
Step 3: Install the JCS1200 Platform
1. Read “Safety Warnings” on page 25.
Install the Mounting Brackets on the JCS1200 Platform
2. Remove components as described in “Remove Components from the JCS1200
Platform” on page 9.
3. Because of the JCS1200 platform's size and weight, we recommend you install the
chassis using a mechanical lift. Install the JCS1200 Platform as described in one of
the following subsections.
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Install the JCS1200 Platform Using a Lift on page 10
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Lift the JCS1200 Platform into the Rack or Cabinet on page 12
4. Reinstall the components as described in “Reinstall Components into the JCS1200
Platform” on page 13
Remove Components from the JCS1200 Platform
To reduce the weight of your JCS1200 platform, remove the following components from
the JCS1200 platform.
NOTE: For detailed instructions on removing JCS1200 components, see the
JCS1200 Control System Hardware Guide.
1. Attachan electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to an approved site ESD grounding point. See the instructions for your site.
2. Slide each component out of the chassis evenly so that it does not become stuck or
damaged.
3. Label each component as you remove it so you can reinstall it in the correct location.
4. Immediately store each removed component in an electrostatic bag.
5. Do not stack removed components. Lay each one on a flat surface.
Install the JCS1200 Platform Using a Lift
1. If you are installing the platform in an open-frame rack, ensure that the rack is in its
permanent location and is secured to the building. Ensure that the installation site
allows adequate clearance for both airflow and maintenance. For details, see “Step
1: Prepare the Site” on page 3.
2. Load the JCS1200 platform onto the lift, making sure it rests securely on the lift
platform.
3. Using the lift, position the JCS1200 platform in front of the rack or cabinet, centering
it in front of the mounting shelves.
4. Lift the chassis approximately 0.75 in. (1.91 cm) above the surface of the mounting
shelves and position it as close as possible to the shelves.
5. Carefully slide the JCS1200 platform onto the mounting shelves so that the bottom
of the chassis and the mounting shelves overlap by approximately 2 in.
6. With two people pulling on the rear of the chassis and two people pushing on the
mounting flanges, slide the JCS1200 platform onto the mounting shelves until the
front or center-mounting flanges contact the rack rails. The shelves ensure that the
holes in the mounting flanges align with the holes in the rack rails.
7. Install a mounting screw into each of the open mounting holes in the rack-mounting
flanges to fasten the chassis to the rack, starting from the bottom.
8. Move the lift away from the rack.
9. Visually inspect the alignment of the JCS1200 platform. If the JCS1200 platform is
installed properly in the rack, all the mounting screws on one side of the rack should
be aligned with the mounting screws on the opposite side, and the platform should
be level.