Installation Guide

Table Of Contents
If the system detects a major I2C failure, the system prevents the management module from accessing devices through the l2C serial
bus. The output from the show chassis command and the show temperature command reect this action, as shown in these examples.
device# show chassis
*** Note: ***
*** Global I2C Error Indicator is set (severity: Major). ***
*** All I2C access are skipped. ***
*** Extreme MLX-4 device ***
---POWERS ---
Slot Power-On Priority and Power Usage:
Slot2 pri=1 module type=NI-MLX-1Gx20-GC 20-port 10/100/1000 Copper Module power usage=146W
Slot4 pri=1 module type=NI-X-OC48x4 4-port OC48/12 STM16/STM4 Module power usage=132W
---FANS ---
---TEMPERATURE READINGS ---
LP2 Sensor1: 34.500C
LP2 Sensor2: 44.125C
The following output is from the show temperature command with the GIEI set to major severity.
device# show temperature
*** Note: ***
*** Global I2C Error Indicator is set (severity: Major). ***
*** All I2C access are skipped. ***
SLOT #: CARD TYPE: SENSOR # TEMPERATURE (C):
2 LP 1 34.0C
2 LP 2 44.250C
4 LP 1 36.0C
4 LP 2 45.750C
Displaying device status and temperature readings
You can display the following information about the router:
Power-on priority of the device slots
Status of the fans
Temperature readings of the management, switch fabric, interface, and fan control modules and the interval at which the system
reads the temperature of these modules
MAC address of the device
To display this information, enter the show chassis command at any level of the CLI.
device# show chassis
***MLX-4 chassis ***
---POWERS ---
Power 1 (32011000 - AC 1200W): Installed (OK)
Power 2: not present
Power 3: not present
Total power budget for device = 1200 W
Total power used by system core = 183 W
Total power used by LPs = 386 W
Total power available = 631 W
Slot Power-On Priority and Power Usage:
Slot1 pri=1 module type=NI-MLX-1Gx20-GC 20-port 10/100/1000 Copper Module power usage=156W
Slot4 pri=1 module type=NI-X-OC48x8 8-port OC48/12 STM16/STM4 Module power usage=230W
--- FANS ---
right fan tray (fan 1): Status = OK, Speed = MED-HI (90%)
right fan tray (fan 2): Status = OK, Speed = MED-HI (90%)
--- TEMPERATURE READINGS ---
Active Mgmt Module: 36.500C 49.625C
Standby Mgmt Module: 36.250C 51.0C
SNM1: 37.0C
SNM2: 38.0C
SNM3: not present
LP1 Sensor1: 41.5C
LP1 Sensor2: 50.625C
Managing the device
Extreme Routing MLX Series Hardware Installation Guide
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