Nortel Passport 8250, Command Line Interface Manual

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Passport 8250 Command Line Interface Guide R2.2
Chapter 5
Flash file system
This section describes the flash file system and provides instructions on how
to use the flash file system. You can view the following topics in this section:
• “Directory structure” (page 65)
• “Flash file system commands” (page 68)
• “Loading a different software version” (page 68)
• “Downloading software” (page 69)
Directory structure
The flash file system emulates a hard disk and is mounted as device C:\. In the
root directory, there is a BOOT.CFG file, LOAD_A directory, and LOAD_B
directory. The LOAD_A and LOAD_B directories contain the same directory
structure, but contain different software versions. During boot-up, the
Passport 8250 reads the BOOT.CFG file to know which software version to
load.
The LOAD_A and LOAD_B directories contain a BOOT.O file, CODE
directory, and DATA directory. The BOOT.O file is the executable image for
the network board. The CODE directory contains a T1_SRV.000 directory
and E1_SRV.000 directory, with each directory storing executable images for
the particular traffic interface. The DATA directory contains the UNIT
directories: UNIT00, UNIT01, UNIT02, and UNIT03.
The UNIT directories store the following information as persistent data:
• CES connections