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Date: Fri, 10 Sep 2004 16:53:47 -0500 (EST)
To: isis-support@imagestream.com
Subject: (SUPPORT) Enterprise Linux Version 4.2.1 for routers available

Version 4.2.1 of ImageStream's Enterprise Linux is now available as a general
availability (GA) release for all ImageStream router customers.

This software release is provided at no charge to all ImageStream customers.
Version 4.2.1 is a maintenance release and recommended for all customers who
wish to run the latest GA release.

This release note documents commands and features added between Version 4.2.0
and Version 4.2.1.


New Features in Version 4.2.1

OSPF Status Options Available in ImageStream's GateD Interactive Interface

Version 4.2.1 adds new commands to the GateD Interactive Interface (gii) in
ImageStream's version of the GateD routing suite.  gii supports a "show ospf"
option with the subcommands ase, errors, interface, lsdb, log, neighbor, and
route.  Previous versions used the ospf_monitor utility to report this
information.  ospf_monitor has been deprecated in this release.

530 Series DS3/E3 Cards Can Receive Large MTU Frames

The version of SAND included in Enterprise Linux 4.2.1 can receive frames up to
4470 bytes regardless of the MTU setting on the interface.  Previous releases
supported only 1500 byte packets.  The highest supported MTU, 1500 bytes, is

SSL VPN Tunnels Support Maintaining Type of Service Flag

Tunnels configured to use OpenVPN/SSL VPN will accept the --passtos flag in the
"tunnel options" command.  When set, this option preserves any ToS values on
packets sent through an OpenVPN/SSL VPN tunnel.

Bridging Support Added For VLAN Tagged Ethernet Ports

Version 4.2.0 supports bridging on both tagged and untagged VLAN ports.
Previous versions supported bridging only on untagged interfaces.

The following bugs have been fixed in Version 4.2.1:

Quality of Service Utility Forces HTB Default Class

The bwinit and bwadd utilities included in Version 4.2.0 forced the default
class for HTB queues to 2.  This created problems for customers whose previous
configurations used class (group) 2 for other purposes.  Version 4.2.1 removes
the default setting and does not use a default HTB class unless one is
specified.  This issue is not present in releases prior to 4.2.0.

E1 Lines Marked Down Due To Erroneous Yellow Alarm Messages

Version 4.2.0 contained a bug that can mark the hardware status of E1 lines down
due to an erroneous yellow alarm.  Yellow alarms are not used with E1 lines, and
the uninitialized value can cause line instability or prevent a line from
functioning at all.  Version 4.2.1 does not use yellow alarm status with E1
lines.  This issue is not present in releases prior to 4.2.0.