Nortel Networks OPTera Metro 3500 - Manual (Page 286)

3-58 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
The NPx communicates with the co-located SPx through the backplane over
Ethernet. The NPx also allows up to 16 nodes with NPxs to be daisy-chained
through the intershelf local area network (ILAN) port on the ILAN or NPx
circuit pack.
The NPx circuit pack provides access to the ILAN1, ILAN2, and COLAN
ports on the LOAM.
Note: The COLAN is 10BASE-T and half duplex
The NPx supports user accounts with a level 5 user privilege code (UPC) for
network surveillance purposes. Logging in to the NPx using a user account
with level 5 UPC from a local connection, you can retrieve alarms and events
from all network elements in the NPx span of control. The NPx can have up to
16 network elements in its span of control. The network elements in the NPx
span of control can be any combination of OPTera Metro 3000 Multiservice
platform series network elements.
The NPx supports file transfer to and from Preside and Multiservice MOA for
electronic software delivery, and to and from a PC to install files on the system.
The NPx also allows other network processors or shelf processors to retrieve
new software loads for upgrade purposes.
Note 1: One NPx can surveil a mixed span of control (that is, OPTera
Metro 3100, 3300, 3400, and 3500 network elements all will be seen in an
NPx circuit pack’s span of control).
Note 2: An NPx circuit pack can store up to 7 software loads. Before
transferring a software load to the NPx, ensure there is at least 20,000 kB
of space available on the NPx.
TL1 sessions
The NPx hosts TL1 sessions for commands related to the NPx and NPx
facilities.
Alarms and provisioning data
NPx provisioning data is backed up at the co-located shelf processor. The NPx
reports alarms for NPx facilities. The co-located SPx reports NPx equipment
alarms on behalf of the NPx. When the NPx is restarted, it receives all its
provisioning data from the co-located SPx. The Save and Restore functionality
saves each individual network element’s backup data to the repository located
on the NPx.
Reset button
When the reset button is pressed, the network processor hardware and software
initialize. During the initialization process, all the LEDs on the NPx turn on
and communications provided by the NPx are unavailable. The NPx reset
button should only be used when the NPx is not responding.