Date: Thu, 25 Jul 2002 13:05:23 -0500 (EST)
From: ImageStream Support
Subject: (SUPPORT) Enterprise Linux 4.0.1 for routers available
Version 4.0.1 of ImageStream's Enterprise Linux is now available as a general
availability release for all ImageStream router customers.
This software release is provided at no charge to all ImageStream customers.
Version 4.0.1 is recommended for all customers interested in moving to the Linux
2.4 series kernels. Version 4.0.1 also provides stability and performance
improvements for the 600 and 800 series WAN cards.
VERSION 4.0 RELEASES ARE BASED ON THE LINUX 2.4 SERIES KERNELS. LINUX 2.4 USES
iptables AS A PRIMARY TOOL INSTEAD OF ipchains. WHILE ipchains IS PROVIDED FOR
BACKWARDS COMPATIBILITY, ALL CUSTOMERS ARE STRONGLY ENCOURAGED TO USE iptables
WITH VERSION 4.0 RELEASES.
This release note documents commands and features added between Version 4.0.0
and Version 4.0.1.
New Features in Version 4.0.1
Change DNS Server Menu Updated
The "Change DNS Server" menu has been updated to provide more descriptive
prompts for information. This feature has been added for customers not familiar
with setting a DNS resolver under Linux-based operating systems.
New IP Commands Supported In Interface Configuration File
The router interface configuration file (wan.conf) now supports advanced routing
commands. The full suite of Linux iproute2 utilities may be used in the
wan.conf file. Advanced routing support was previously only available from the
SAND Version 3.5.7 Included
ImageStream's SAND Version 3.5.7 release is included in the Version 4.0.1
release. See the release notes for Version 3.5.7 for more information about the
SAND Version 3.5.7 software release. This SAND release adds support for
ImageStream's ATM OC-12 card and adds efficiency and stability fixes to the 600
and 800 series WAN cards and frame relay support.
Gigabit Ethernet Card Support Updated
Version 4.0.1 adds support for ImageStream Gigabit cards based on the Tigon-3
chipset and ImageStream quad Ethernet cards based on the Starfire chipset.
This release also adds updated support for National Semiconducter-based chipset
Gigabit cards. All currently supported Ethernet card chipsets have been updated
to ensure compatibility with VLAN packets bridged across router interfaces.
Default Firewall Security File Updated
Version 4.0.1 now uses iptables instead of ipchains to add default security
rules for the Gated Interactive Interface (gii). More typographical error
checks have been added to ensure that access to gii is properly restricted on
Bugs fixed in Version 4.0.1
The following bugs have been fixed in Version 4.0.1:
Serial Console Logging Problem Fixed
Version 4.0.1 updates the system message logger (syslogd) to prevent it from
logging to the serial console port by default. Routers equipped only with a
serial console that do not have a console cable attached can hang on boot under
certain conditions with Version 4.0.0. Previous versions of Enterprise Linux
were not affected by this problem, since syslogd did not log messages to the
serial console by default.
Limitations and Upgrade Instructions
*** NOTE! If the upgrade fails, do NOT reboot! Contact ImageStream's Technical
Support without rebooting. ***
Upgrading to Version 4.0 or later requires the following:
1. 64 MB of RAM or higher.
2. 32 MB of flash.
3. 300 MHz processor or better.
4. Enterprise Linux Version 2.3.2 or higher.
The upgrade utility will not install Version 4.0 if memory and flash
requirements are not met. Users can contact ImageStream to purchase a RAM,
processor or flash upgrade.
Users running an Enterprise Linux version less than 2.3.2 must upgrade before
Version 4.0 will be available from the Update menu. Upgrading any version prior
to 2.3.2 will automatically be upgraded to 2.3.2. A second upgrade will be
required to install Version 4.0.
The upgrade does not otherwise affect the stored configuration in the
ImageStream router. To back up the router's configuration prior to upgrading,
choose option 4 (Backup/Restore) from the router's main menu. Choose the Backup
methods option (Option 1) and select a method from the choices listed. From the
router's command line, use the "backup" command. The backup utility takes four
arguments: flash (to back up configurations to the router's nonvolatile flash
memory), floppy (to back up to a floppy disk), scp (to back up via secure copy),
or file (to back up to a separate file on the router's nonvolatile flash
Copyright and Trademarks
Copyright 2002 ImageStream Internet Solutions. All rights reserved.
ImageStream is a trademarks of ImageStream Internet Solutions, Inc. All other
marks are the property of their respective owners.
ImageStream makes no representations or warranties with respect to the contents
or use of this document, and specifically disclaims any express or implied
warranties of merchantability or fitness for any particular purpose. Further,
ImageStream reserves the right to revise this publication and to make changes to
its content, any time, without obligation to notify any person or entity of such
revisions or changes.
Contacting ImageStream Technical Support
Every ImageStream product comes with a one year hardware and software warranty.
ImageStream provides technical support via voice, FAX, electronic mail, and the
web. Technical support is available 24 hours a day, 7 days a week.
To contact ImageStream technical support by voice, dial +1 (574) 935-8484
worldwide. By FAX, dial +1 (574) 935-8488. By electronic mail, send mail to
email@example.com. Using the World Wide Web, see