Technical data

Using Technician Interface Software
4-2
303561-A Rev 00
Overview
The NVFS file system on the router reads and writes to one or more memory
cards. Memory cards exist in 2-MB, 4-MB, and 8-MB sizes. Each memory card
provides system access to the software image and configuration file during a cold
start. (A cold start occurs when you cycle the power on the router, or after you
enter the
diags
command.)
Each FRE
®
module (BLN, BLN-2, BCN) in a router can host one memory card.
A Flash System Controller (VME-based routers only) in a router can host one or
two memory cards. Multiple memory cards are optional in the router. The section
that follows suggests how to manage multiple memory cards.
A volume number is the same number as the slot that hosts the memory card. For
example, volume 2 resides on slot 2.
Table 4-1
outlines the NVFS commands. The Wildcard column indicates whether
you can use wildcards (
*
and
?
) when entering the commands. You use wildcards
to display multiple file names, and to copy or delete multiple files. The wildcards
have the same meaning as those in UNIX:
•The
*
wildcard matches any number of characters, including zero characters.
•The
?
wildcard matches any single character. A match occurs only when a
character is present in the position indicated by the wildcard.
The sections that follow describe the commands in detail. They also show how to
use the wildcards.