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Viptela Documentation

Maintenance and Troubleshooting

Now that you have installed and connected the vEdge 2000 router, you can monitor and troubleshoot the various LEDs and system alarms on the router.

​Alarm Severity Levels

The system alarms on the vEdge 2000 router have two types of severity levels:

  • Major (red)—Indicates a critical situation on the router resulting from one of two conditions:
    • One or more hardware components on the router has failed.
    • One or more hardware components on the router has exceeded the temperature threshold

A major alarm condition requires immediate attention. If a temperature related major alarm persists for more than five minutes, the router will shut down.

  • Minor (yellow)—Indicates a warning on the router that, if left unattended, might result in an interruption in router operation or degradation in router performance. A yellow alarm condition requires further monitoring and/or maintenance.

Hardware Alarms

Hardware alarms on the vEdge 2000 router are predefined and are triggered by a physical condition on the router such as a power supply failure, excessive component temperature, or fan failure. The vEdge 2000 router triggers the following types of hardware alarms:

  • Main board temperature alarm—The main board of the router has four temperature sensing points (board sensor 1 through 4). If the temperature of the sensor location crosses the predefined threshold level, the system triggers an alarm.
  • CPU and DRAM temperature alarm—If the temperature of the system CPU or of the DRAM modules crosses the predefined threshold level, the system triggers an alarm.
  • PIM temperature alarm—If the temperature of the PIM modules crosses the predefined threshold level, the system triggers an alarm.
  • Fan alarm—The router has modular fan trays for system cooling. The Viptela software maintains the fans at an optimal fan speed, raising the speed as the ambient temperature increases and decreasing the speed as the temperature decreases, to keep the router operating at the lowest possible temperature in the green temperature threshold. If a fan stops running, the system triggers an alarm. Also if a fan starts to run below a predefined RPM threshold, the system triggers an alarm.
  • Power supply alarm—The router has two power supplies for redundancy reasons. If one of the power supplies is not plugged in or there is a failure on a power supply input, the system triggers an alarm

​Table 1 lists the yellow and red alarm threshold for the nine temperature sensing points in the system—four board sensors spread across the board, one CPU junction temperature sensor, two DRAM temperature sensors, and two PIM temperature sensors. The lower threshold value (Bad Fan) applies if a fan failure condition is also detected; otherwise the higher threshold value applies (normal).

Table 1: Temperature Alarm Thresholds

Item

Yellow Alarm (degrees C)

Red Alarm (degrees C)

 

Normal

Bad Fan

Normal

Bad Fan

Chassis board sensor1

65

60

80

75

Chassis board sensor2

65

60

80

75

Chassis board sensor3

65

60

80

75

Chassis board sensor4

65

60

80

75

CPU junction temperature

85

80

100

95

DRAM DIMM 0

65

60

80

75

DRAM DIMM 1

65

60

80

75

PIM 0

65

60

80

75

PIM 1

65

60

80

75

Checking Alarms and Notifications

To view the current chassis environment condition , enter the show hardware environment command at the system prompt. The system displays the power supply status, temperature sensor readings, fan speed, and related alarm status if any exists.

To view the severity of active alarms, enter the show hardware alarms command at the system prompt. The system displays the alarm severity and a brief description of the cause of each active alarm.

To view temperature thresholds at which green, yellow, and red alarms are generated, enter the show hardware temperature-thresholds command at the system prompt. The system displays the alarm temperature threshold information for a specific board or all boards in the router and for the router's CPU and DRAM.

To view all other events on a Viptela device, enter the show notification stream command. The system displays notifications about events that have occurred on the Viptela device.

LEDs

The chassis LEDs located on the front panel of the vEdge 2000 router indicate the status of the router.

If there are one or more major alarms active in the router, the SYS LED is lit red. If there are one or more minor alarms active in the router, the SYS LED is lit amber. See Front Panel Components for details of the LEDs and the status they indicate.

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