Alcatel Carrier Internetworking Solutions Omni Switch/Router - Manual (Page 604)

Port Monitoring
Page 19-62
RAM Disk System for Data Capture Files
Port monitoring uses a RAM disk for fast temporary storage of data capture files. The RAM disk
has a separate directory designation of /ram . RAM -based files are created in DOS-FAT format
and they are displayed in UPPERCASE .
You can copy files between the /ram disk system and the standard /flash file system. In addi-
tion, files in the RAM disk system are retrievable via FTP . Both the /ram file system and the
/flash file system are accessible by using the UNIX/DOS -style change directory ( cd ) command.
♦ Note ♦
The RAM drive is part of DRAM memory. If you power
off or reboot the switch, any files saved in the RAM
drive will be lost.
Configuring RAM Drive Resources (pmcfg)
The pmcfg command allows you to select the size of the RAM disk file system or to delete the
RAM disk. In addition, it allows you to configure the amount of data collected for each packet
capture. To begin configuring RAM drive resources, enter
pmcfg
A screen similar to the following displays:
RAM disk size : 1000 Kilobytes
Lines displayed: 1
Change any of the above (y/n)? (n)
To change one of the settings, enter a Y and press . You will be prompted for a new
RAM drive size. Select a size in kilobytes between 1000 and 8000. You can also delete the
RAM drive by entering a size of zero (0). Changing the RAM disk size also requires that you
reboot the system.
The Lines displayed controls the amount of data displayed to the terminal when you choose to
dump session data to the computer screen. You can specify the number of lines to display
while viewing port monitor data on the screen.
Changing the Default System Directory (cd)
After a port monitoring session is enabled the default directory is the RAM disk system ( /ram ).
To switch back to the standard default flash file system ( /flash ) use the cd command. To
switch back to the default directory, enter
cd /flash
To switch back to the RAM disk directory, enter
cd /ram