• Supported Platforms
• T320 Routers

• Related Topics
• T320 Host Subsystem Description
• Maintaining the T320 Routing Engines
• Maintaining the T320 T-CBs
• Replacing the T320 Host Subsystem Components
• Taking the T320 Host Subsystem Offline

Maintaining the T320 Host Subsystem

Purpose

For optimum router performance, verify the condition of the host subsystem. The host subsystem comprises a Routing Engine and up to two adjacent T-CBs functioning together.

Action

On a regular basis:

• Check the host subsystem LEDs (HOST0 and HOST1) on the craft interface. If the red HOST0 or HOST1 LED is lit, look at the LCD to get more information about the cause of the problem. For more information about the LEDs and the display, see T320 Craft Interface Description.
• Check the LCD on the craft interface to view information about the status of the Routing Engines and control boards.