Version 2.3.4 of ImageStream's Enterprise Linux is now available as a
general release for all ImageStream router customers.  Version 2.3.4 is a
maintenance release.

This software release is provided at no charge to all ImageStream
customers, and is recommended for all customers who wish to upgrade to the
latest available software release.

This release note documents commands and features added between Version
2.3.3 and Version 2.3.4. 


----------------------------


New Features in Version 2.3.4


SAND Version Updated

The recently-announced Version 3.30 of SAND is included in Version 2.3.4.


GateD Dynamic Routing Package Updated

The GateD dynamic routing program has been updated for Version 3.0.  The
interactive interface to gated, gii, now is only available on through a
direct connection on the router (localhost) and ipchains/iptables rules
are not required to block outside access.  The "show bgp summary" and
"show bgp peeras <AS number>" commands now also reflect the number of
route announcements sent to and received from each peer.


----------------------------


Bugs fixed in Version 2.3.4


The following bugs have been fixed in Version 2.3.4: 


Workaround For Cisco IOS Bug in BGP Added to GateD

Certain versions of the Cisco IOS accept and propagate invalid routing
information.  This behavior is in violation of the BGP RFC, and causes
RFC-compliant devices, including ImageStream routers, to properly drop
peering sessions.  When affected Cisco routers are upstream of an
RFC-compliant device, this can cause a loss of connectivity for the
downstream router.  ImageStream has patched GateD to log an error and
ignore invalid route announcements in these situations.  Peering sessions
will no longer be automatically terminated.


Gated Display Of "checkconf" Output At Boottime Requiring User
Intervention

Gated no longer displays the output of the "checkconf" command at
boottime.  Previously, incorrect configurations could cause the router to
require user input at the console to continue the boot process.  Beginning
with Version 3.0-beta2, the checkconf output is no longer displayed at
boottime.


----------------------------


Upgrade Instructions


*** NOTE! If the upgrade fails, do NOT reboot! Contact ImageStream's
Technical Support without rebooting. ***

The upgrade process on an ImageStream router erases the operating system
software area from nonvolatile memory. Never interrupt the upgrade
process, or loss of software information can result.

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
<typeofbackup>" 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
memory). 



----------------------------


Copyright and Trademarks


Copyright 2001 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.

Notices

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 (219) 935-8484
worldwide. By FAX, dial +1 (219) 935-8488. By electronic mail, send mail
to support@imagestream.com. Using the World Wide Web, see
http://www.imagestream.com/

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