METRObility Optical Systems R821-1S, Инструкция по установке и эксплуатации

Страница: 51 / 127

49
Management
Sensors
Environmental
Sensors
Through software, you can view environmental sensor information for
monitoring the health of the services line card. Each sensor reading
includes the current value along with the minimum and maximum values
for the component. To prevent a potential problem, a trap can be set so a
network manager is notified whenever any sensor threshold is crossed.
For more information on traps, refer to “Traps” on page 101.
Module Sensors
There are five module sensors. Module sensors measure the main circuit
board’s temperature as well as the voltage for the line card’s 1.2, 2.5, 3.3
and 5.0 volt power supplies. The 5.0 volt supply is the input power
source for the services line card. The other supplies are used to power
various components on the circuit board. The module temperature
sensor has an accuracy of ±3° C. The voltage monitoring accuracy is
±1%.
Port Sensors
The R821 includes three SFP port sensors for the fiber port. Information
is provided only when an SFP transceiver which supports diagnostics is
installed in the port. One sensor provides the internal port temperature
reading. The other two sensors provide the optical receive and transmit
power levels for the fiber port. The accuracy of the RX and TX monitors
is typically ±1 dBm.
Upgrading the Operating System Software
The R821 services line card can store two separate versions of the
operating system software. This enables you to revert to a previous
version without having to download the older version again. Downloading
and installing a new revision of the software onto the R821 is performed
via TFTP as configured through SNMP, telnet, CLI, NetBeacon, or
WebBeacon. This section describes the steps necessary to download
and activate a new version of software via SNMP. Instructions on how to
upgrade the OS using the other methods are included in the respective
user guides.
1. Copy the new binary OS image file to a TFTP server that can be
reached by the R821.