Software Package Security - Dell PowerConnect J-EX4200-24T Software Manual

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
62
NOTE:
To access the J-Web interface, your management device must have the
following software installed:
Operating system: Microsoft Windows XP Service Pack 3
Browser version: One of the following. Other browsers might work but are
not supported by J-Series platforms.
Microsoft Internet Explorer version 7.0
Mozilla Firefox version 3.0
Additional requirements:
Only English-language browsers are supported.
The browser and the network must be able to receive and process
HTTP/1.1 gzip compressed data.
During a successful upgrade, the upgrade package removes all files from
completely reinstalls the existing software. It retains configuration files, and similar
information, such as secure shell and host keys, from the previous version. The previous
software package is preserved in a separate disk partition, and you can manually revert
back to it if necessary. If the software installation fails for any reason, such as loss of
power during the installation process, the system returns to the originally active installation
when you reboot.

Software Package Security

Junos OS is delivered in signed packages that contain digital signatures to ensure it is
official software. For more information about signed software packages, see the Junos
OS Installation and Upgrade Guide at
Installing Software on a Virtual Chassis
You can connect individual J-EX4200 Ethernet Switches together to form one unit and
manage the unit as a single chassis, called a Virtual Chassis. The Virtual Chassis operates
as a single network entity composed of members. Each member of a Virtual Chassis runs
a Junos OS package.
For ease of management, the Virtual Chassis provides flexible methods to upgrade
software releases. You can deploy a new software release to all members of a Virtual
Chassis or to only a particular member.
Installing Software on J-EX8200 Switches with Redundant Routing Engines
To install software on a J-EX8200 Ethernet Switch that has two Routing Engines with
minimal network disruption, you perform a Junos OS installation on each Routing Engine
separately, starting with the backup. See "Installing Software on a J-EX8200 Switch with
Redundant Routing Engines (CLI Procedure)" on page 71.
http://www.juniper.net/techpubs/software/junos/
and
/var/tmp
.