Reference Clock Configuration; Constant Bit Rate (Cbr) Clocking; Fault Management; Flash File System - Nortel Passport 8250 Command Line Interface Manual

20 Chapter 1 Introducing the Passport 8250
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For details on the NMS Passport 8250 Tools, see NTP 241-6001-028, NMS
Passport 8250 Tools Guide.
MIB browser
You can use a third-party MIB browser to view the MIB objects.
Reference clock configuration
The clocking scheme can be derived from the Passport 8250 device or from
the ATM network off an external port on the Passport 8250 device. When the
clock is derived from an external port, you can switch from the primary port
to the secondary port. For details on the clock configuration, see NTP 241-
5101-200, Passport 8250 Installation Guide.

Constant bit rate (CBR) clocking

For structured services, Passport 8250 supports synchronous CBR clocking.
For unstructured services, Passport 8250 supports synchronous and
synchronous residual time stamp (SRTS) CBR clocking. Different ports on a
single service board can use different clocking modes.

Fault management

The Network Management System (NMS) is the carrier domain management
system and it provides integrated fault management of Passport switches and
Passport 8250 multiplexers. For details on the NMS Advisor tools, See NTP
241-6001-011, NMS Advisor User Guide.
Flash file system
The Passport 8250 stores system software and configuration data in flash
memory. You can view the directory structure in the CLI and download new
system software through a network connection using FTP. For details on flash
memory, see "Flash file system" (page 65).
241-5101-201 R2.2
modify community strings
view ATM CES and DSX1 statistics
save and load templates
register management workstations for traps
start the surveillance of a Passport 8250 device