                        ComOS 3.7.1 Release Note

                Introduction

The new Livingston Enterprises ComOS(TM) 3.7.1 software release is now
available for the PortMaster(R) 3 Integrated Access Server.  This
release note applies only to the PortMaster 3.  This release is provided
at no charge to all Livingston customers.

This release note documents commands and features added between ComOS
release 3.7 and 3.7.1 on the PortMaster 3.

Note - You must use PMconsole(TM) 3.5.3 when upgrading to ComOS 3.7.1;
see "Upgrade Instructions" below.  If you are running Windows 95 or
Windows NT 4.0 you must use PMconsole for Windows 3.5.1.4.  ComOS 3.7.1
uses roughly the same amount of memory as ComOS 3.7.  Read "Upgrade
Instructions" thoroughly before upgrading.

                Contents

Introduction
New Features in ComOS 3.7.1
Bugs Fixed in ComOS 3.7.1
Upgrade Instructions

                New Features in ComOS 3.7.1

	Australian ISDN Support

The command "set isdn-switch ts014" is now available, to support the
TS014 ISDN switch used in Australia.

	A-law Support

A-law pulse code modulation is now supported for V.34, V.42bis, and
K56flex on the True Digital 56K Card.

	DHCP Proxy

ComOS 3.7.1 supports the new "set dhcp-server Ipaddress" command.
In previous releases (and by default in ComOS 3.7.1) the PortMaster
replies directly to a BOOTP request from a dial-in client.  In ComOS
3.7.1, if you set a Dynamic Host Configuration Protocol (DHCP) Server
on the PortMaster, the PortMaster does not reply directly to BOOTP
requests but instead forwards BOOTP and DHCP requests to the DHCP
server, as described in RFC 1542 "Clarifications and Extensions for the
Bootstrap Protocol."

	Alternate ChoiceNet Server is Now Supported

The "set choicenet 2 Ipaddress" command now sets an alternate ChoiceNet
server.  ChoiceNet requests for filter downloads are retransmitted
every 15 seconds, site list requests are retransmitted every 5 seconds,
and a global counter is incremented each time any request is
retransmitted.  At the fourth retransmission the PortMaster clears the
counter and switches to using the other ChoiceNet server until the
retransmission counter reaches four again.

Use the "set choicenet Ipaddress" command to set the primary ChoiceNet
server to Ipaddress, and make it the active ChoiceNet server.

	Access Filters Can Now Use ChoiceNet

Previously, ChoiceNet could be used only for packet filters.  In ComOS
3.7.1, ChoiceNet can also be used for access filters for login users
prompted for a host.

	V.110 Support

V.110 is now supported over ISDN PRI lines on the PortMaster 3, when
using the True Digital V.34 Card (MDM-PM3-8 and MDM-PM3-10).  V.110 is
not supported at this time on the True Digital 56K Card (MDM-56K-8 and
MDM-56K-10), but you can use both types of cards in the same chassis
and V.110 calls will be routed to the True Digital V.34 Cards for
handling.  When mixing cards for this purpose, put the True Digital 56K
Cards in the low numbered slots (starting at 0 and counting up) and the
True Digital V.34 Cards in the high numbered slots (starting at 5 and
counting down).  Slots are numbered from left to right and top to bottom.
Slot 0 is the top left modem slot.

	IPX Spoofing Now Supports Both Microsoft and Novell

ComOS supports IPX keepalive spoofing for on-demand IPX links.
Previous releases supported IPX keepalive spoofing only for Novell
NetWare clients and servers.  ComOS 3.7.1 supports both Novell
keepalives and now also Microsoft session keepalives

	ATE1 command added

In previous releases, when you attached to a dial-out port and issued a
dial command with ATDT, the port would print "Dialing..." to indicate
it was dialing.  This caused problems for network com-port redirectors
on Windows 95.  In ComOS 3.7.1, by default dial-out ports do not print
out anything when dialing.  You can turn on the "Dialing..." message by
entering the "ATE1" command before the "ATDT" command.  "ATE0" turns off
the message and is now the default.

		Bug Fixes in ComOS 3.7.1

	Modem Disconnects Fixed

In ComOS 3.7, certain modems (particularly the USR Sportster) dialing
in to a PortMaster 3 with True Digital 56K Cards would hang up 5 to 10
minutes into an active session.  The typical disconnection code
reported for this behavior by the "show modem" command was "Exceeded
LAPM retry limit."  This problem has been fixed in ComOS 3.7.1.

	Random No Modem Tones Fixed

In ComOS 3.7, certain modems dialing into a PortMaster 3 with "True
Digital 56K Cards" would intermittently receive no modem tones.  This
is fixed in ComOS 3.7.1.

	Proxy ARP Supernetting Supported

Proxy ARP is now supported for classless routing, as well as on classed
boundaries. This feature allows supernetting and is compatible with
variable-length subnet masks (VLSM).  Previous ComOS releases only
supported Proxy ARP on classed boundaries.

	Multichassis PPP Idle Timer and Virtual Ports Fixed

Idle timers for Multichassis PPP now behave properly and no longer time out
slave ports that have traffic. In addition, virtual ports no longer
randomly show users who have logged out as still being logged in.

	Call Type Detection Timer Extended

The time during which ComOS detects whether a call is from a modem or ISDN
has been extended from 10 seconds to 90 seconds to support certain ISDN
devices that do not identify themselves within the first 10 seconds. In
previous releases, ComOS timed out after 10 seconds.

	Frame Relay Subinterfaces Now Start Quickly

All Frame Relay subinterfaces are now available as soon as their primary
Frame Relay interface becomes active. In previous releases, routing packets
were sometimes received on the wrong interface because Frame Relay
subinterfaces took as long as 15 seconds to become active.

	RADIUS Connect-Info now reported even if no error protocol negotiated

The Connect-Info attribute is now included in RADIUS access-request and
accounting-request messages even when the modems do not negotiate an error
protocol.  Connection speeds formerly reported as "50K" are now properly
reported as "50000".

	Multilink PPP compatability with NEC AtermIT55 ISDN Terminal Adapter

The NEC Aterm ISDN TA lacks the ability to do packet fragmentation/reassembly
when using MultiLink PPP. ComOS has been enhanced to automatically detect
this condition and send complete, non-fragmented packets down each B-channel
when doing MultiLink PPP to this device.

	PPP compatability fixed for Mac Open Transport PPP

Mac Open Transport PPP rejected LCP Config ACK's before receiving a LCP 
Config Request from the PM3. ComOS has been modified to send the LCP
Config Request first before sending a LCP ACK packet.


                Upgrade Instructions

WARNING! YOU MUST USE PMINSTALL VERSION 3.5.3 OR LATER TO PERFORM THIS
UPGRADE! If you are upgrading using PMconsole for Windows, you must use
PMconsole for Windows version 3.5.1.4 or later.

If you are upgrading from ComOS 2.3 or 2.4 to ComOS 3.7.1, you must
first upgrade to ComOS 3.0.4, reboot, and then upgrade to ComOS 3.7.

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

The upgrade process on the PortMaster 3 erases the configuration
area from nonvolatile memory and saves the current configuration into
the nonvolatile memory.  Never interrupt the upgrade process, or loss
of configuration information can result.

The upgrade does not otherwise affect your stored configuration in the
PortMaster. If you want to back up your PortMaster configuration before
upgrading, choose the Backup PortMaster button in PMconsole for
Windows, or run pmreadconf on UNIX.  The pmreadconf utility takes three
arguments: the hostname or IP address of the PortMaster, the
administrative password for the PortMaster, and the filename to place the
configuration in.  If you ever need to reload the configuration, move
the backup file into the /usr/portmaster/data directory and run
pminstall to reload it.  Here is an example:

cd /usr/portmaster
pmreadconf Pmname Pmpassword data/Pmname.conf
chmod 600 data/Pmname.conf

The installation software can be retrieved by FTP from
ftp://ftp.livingston.com/pub/le/software/System/Tarfile.tar.Z,
replacing System and Tarfile.tar.Z with the names of the files.  You
can retrieve the upgrade image at the same time. The following example
shows an administrator retrieving the SunOS pminstall and PortMaster 3
upgrade image:

umask 22
mkdir /usr/portmaster
cd /usr/portmaster
ftp ftp.livingston.com
 (Enter anonymous)
 (Enter your email address; it will not echo.)
  binary
  cd /pub/le/software/sun4
  get pm_3.5.3_sun4.tar.Z pm.tar.Z
  cd /pub/le/upgrades
  get pm3_3.7.1
  quit
uncompress pm.tar.Z
tar xvf pm.tar
rm pm.tar
mv pm3_3.7.1 data
pminstall

PMconsole 3.5.1.4 for Windows 95 and Windows NT 4.0 is available on
ftp://ftp.livingston.com/pub/le/software/pc/pmw3514.exe in a
self-extracting file.  Transfer that file via FTP, run the file to
install PMconsole for Windows, move the upgrade file into the data
directory, run PMconsole for Windows, and click on the Upgrade icon.

PMconsole for the following operating systems can be found under
ftp://ftp.livingston.com/pub/le/software/

bsdi/pm_3.5.3_BSDOS_2.0.tar.Z           BSD/OS 2.0 and 2.1
sgi/pm_3.5.3_IRIX_5.2.tar.Z             SGI Irix 5.2
linux/pm_3.5.3_Linux.tar.Z              Linux 1.2.13 ELF
rs6000/pm_3.5.3_RS6000_4.1.tar.Z        RS6000 AIX 4.1
alpha/pm_3.5.3_alpha_T3.0.tar.Z         Digital Alpha OSF/1 T3.0
hp/pm_3.5.3_hp9000_10.01.tar.Z          HP 9000 HP/UX 10.01
sun4/pm_3.5.3_sun4.tar.Z                SunOS 4.1.4, 5.5.1 on Sparc
sun86/pm_3.5.3_sun86_5.5.tar.Z          Solaris x86 2.5.1
pc/pmw3514.exe                          Windows 95 and Windows NT 4.0

The following upgrade image is available at
ftp://ftp.livingston.com/pub/le/upgrades/

ComOS           Upgrade Image   Product
_________       _____________   _____________________________________
3.7.1           pm3_3.7.1       PortMaster 3
 

        Copyright and Trademarks

Copyright 1997 Livingston Enterprises, Inc. All rights reserved.

PortMaster is a registered trademark of Livingston Enterprises, Inc.
ProVision is a service mark of Livingston Enterprises, Inc.  The
Livingston logo and the names Livingston, ComOS, RADIUS, ChoiceNet,
PMconsole, IRX, True Digital, and RAMP are trademarks of Livingston
Enterprises, Inc.  All other marks are the property of their respective
owners.

        Notices

Livingston Enterprises, Inc. makes no representations or warranties
with respect to the contents or use of this manual, and specifically
disclaims any express or implied warranties of merchantability or
fitness for any particular purpose. Further, Livingston Enterprises,
Inc. 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 Livingston Technical Support

Livingston provides technical support via voice, fax, and electronic
mail. Technical support is available Monday through Friday from 6 a.m.
through 5 p.m. Pacific Time (GMT-8).  Please specify that you are
running ComOS 3.7.1 if you are reporting problems with this release.

To contact Livingston Technical Support by voice, dial 1-800-458-9966
within the US or 1-510-737-2100 outside the US; by fax, dial
1-510-737-2110; by electronic mail, send mail to
support@livingston.com; and through the World Wide Web, access
http://www.livingston.com/.

