3Com SuperStack II 3300, Руководство пользователя

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52 C
HAPTER
6: S
ETTING
SNMP
AND
S
YSTEM
P
ARAMETERS
Working with
Nonvolatile Data
Nonvolatile data is information stored by the Layer 3 Module which is
retained even when the module is not powered on.
You can do the following tasks with nonvolatile data:
■
Create a backup copy of the module’s nonvolatile configuration.
■
Retrieve the backed-up file.
■
Reset system data to its factory-configured values, if necessary.
Nonvolatile
Parameters
During a save, the contents of nonvolatile memory are written to a disk
file. All configurable parameters are saved in nonvolatile memory,
including:
■
Module name
■
Passwords
■
IP interface configurations
■
RIP mode setting
■
SNMP community string settings
■
SNMP trap destination configurations
The file also contains the following information, which is used to resolve
any inconsistencies when nonvolatile data is restored:
■
Software version number
■
System ID
■
Date and time of creation
■
Type of configuration
■
Data checksums
Creating a Backup of
Nonvolatile Data
When the module saves nonvolatile data, it writes it to a disk file on a
host computer (that is, a server) using the Trivial File Transfer Protocol
(TFTP). You can then retrieve the information from the disk file by using
the
system nvData restore
command.