Front System Processor Timing Module
Plexus 9000 Planning and Engineering Guide
Issue 3, April 23, 2004
Section 130-120-200
5-32
Telica,
Inc.
The FAM determines the active module when booting with two SPs and
communicates the SP redundancy state. It is responsible for launching
processes during the boot sequence and ensures that files on the disk are
adequate for operation.
Heartbeat Process
The Heartbeat process is a simple message exchange protocol, which will
run between SP over a communications link to verify that each SP is
operating
Equipment Manager (EQM)
The EQM keeps track of state information for all IOMs, equipment
holders in the chassis and various links that comprise an IOM. It provides
the capability to configure equipment that is not present in the system. It
provides an interface to perform SP fail over; the FAM makes the
decision, the EQM does the hardware manipulation and sequencing.
TL1 Agent
The TL1 Agent processes TL1 commands and dispatches requests for
management information, or changes of configuration information to the
appropriate system resource for processing over an RS-232 or an Ethernet-
based connection. The RS-232 connection is through a serial craft port,
which is any VT-100 compatible terminal device. Input data streams from
the serial craft port are buffered until a TL1 command terminator (;) is
found or an error occurs. If a TL1 command terminator is found, the
command is passed to the TL1 agent for processing. Ethernet-based
communication is direct with the TL1 agent. The remote end of the
Ethernet connection can be either a craft port using Telnet or an Element
Management System (EMS).
The TL1 agent supports the transmission of autonomous output messages.
Autonomous messages are unsolicited messages sent by the Plexus 9000
to indicate the occurrence of an alarm or some other significant event.
The TL1 agent detects the condition by either polling the operational code
or by some asynchronous notification.
The TL1 agent supports the ability to log TL1 command/ response
messages and autonomous messages. Command/ Response messages are
stored in one log and autonomous messages are kept in a separate log.
The TL1 agent also communicates with the Security Task interface to
authenticate users and manage user sessions. In order to log into the TL1
agent a user must input a valid username and password. The Plexus 9000
is shipped with a default username of “telica”, a password of “telica” and
ADMIN access privileges. It is recommended that these be changed for
security with the TL1 ED/ENT-USER-SECU command. Refer to
for the access levels and their description.