- play_arrow Site Planning and Specifications
- play_arrow Site Preparation
- play_arrow Rack Requirements
- play_arrow Power Requirements
- play_arrow Compliance
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- play_arrow Safety and Regulatory Compliance Information
- play_arrow General Safety Information
- play_arrow Radiation and Laser Warnings
- play_arrow Installation and Maintenance Safety Information
- play_arrow Power and Electrical Safety Information
- General Electrical Safety Guidelines and Warnings
- Preventing Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- DC Power Electrical Safety Guidelines
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Multiple Power Supplies Disconnection Warning
- TN Power Warning
- Action to Take After an Electrical Accident
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- play_arrow Installation and Configuration
- play_arrow Installing the Appliance
- Tools and Parts Required to Install the Junos Space Appliance
- Unpacking the JA2500 Junos Space Appliance
- Mounting the JA2500 Junos Space Appliance
- Front-and-Rear Mounting the JA2500 Junos Space Appliance Flush to a Rack
- Front-and-Rear Mounting the JA2500 Junos Space Appliance Recessed in a Rack
- Midmounting the Junos Space Appliance in a Two-Post Rack
- play_arrow Connecting the Appliance
- play_arrow Performing Initial Configuration
- Booting the Junos Space Appliance
- Configuring a Junos Space Appliance as a Junos Space Node
- Configuring a Junos Space Appliance as a Standalone or Primary FMPM Node
- Configuring a Junos Space Appliance as a Backup or Secondary FMPM Node for High Availability
- Installing a Junos Space Image on a Junos Space Appliance by Using a USB Drive
- Powering Off the Junos Space Appliance
- play_arrow Changing Network and System Settings
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- play_arrow Maintenance and Replacing Components
- play_arrow Replacing Components
- Installing and Removing JA2500 Junos Space Appliance Hardware Components
- Replacing the AC Power Supply Cord on a Junos Space Appliance
- Replacing the AC Power Supply Module on a Junos Space Appliance
- Replacing the DC Power Supply Cable on a Junos Space Appliance
- Replacing the DC Power Supply Module on a Junos Space Appliance
- Replacing the Fan on a Junos Space Appliance
- Replacing the Hard Disk on a JA2500 Junos Space Appliance
- play_arrow Maintenance
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- play_arrow Troubleshooting
- play_arrow Troubleshooting Procedures
- play_arrow Monitoring the Appliance
- play_arrow Returning Hardware
- Returning a JA2500 Junos Space Appliance or Component for Repair or Replacement
- Locating the Serial Number on a JA2500 Junos Space Appliance or Component
- Contacting Customer Support to Obtain Return Materials Authorization for Junos Space Appliances
- Packing a JA2500 Junos Space Appliance or Component for Shipping
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NTP Time Source for a Junos Space Appliance
This topic applies to the following Junos Space Appliances: JA1500 and JA2500.
To ensure consistent behavior among all nodes in a multinode fabric, each node time must be synchronized with every other node in the fabric. When you configure a Junos Space Appliance with a Network Time Protocol (NTP) server, you ensure that if the first node, which is used to synchronize time for all nodes in the fabric, goes down, all other nodes in the fabric remain synchronized. To ensure this behavior, all nodes in a fabric must use the same external NTP source that you configure for the first appliance. The additional nodes installed on the same fabric automatically get their time setting from the first node in the fabric.
For more information about the Junos Space fabric, refer to the Managing Nodes in the Junos Space Fabric chapter in the Junos Space Network Management Platform Workspaces Feature Guide (available at http://www.juniper.net/documentation/en_US/release-independent/junos-space/index.html).
By default, Junos Space Network Management Platform synchronizes the time zone of the client computer with that of the Junos Space server. Hence, the time displayed on the Web user interface corresponds to the time zone configured on the Junos Space server. However, the Junos Space CLI displays the time corresponding to the time zone configured in the Junos Space server.
To ensure time synchronization across all nodes in the fabric, we strongly recommend that you use the following guidelines:
Add an NTP server when you configure the first Junos Space node in the fabric.
For each additional node that you add to the fabric, configure the same NTP server that you specified for the first appliance.
Note:You must add the NTP server before you add the first node to the fabric from the Junos Space Network Management Platform Web user interface.
