3Com 2848 SFP - Baseline Switch Plus Instruction Manual

3Com Baseline Switch 2848-SFP Plus
Release Notes
Software version 1.0.2.2
Part Number: 100015146
Published Date: May 2006
Table of Contents
1. Introduction................................................................................................................................... 2
1.1 Scope.................................................................................................................................... 2
1.2 Online Resources ................................................................................................................. 2
2. Issues Fixed in Switch 2848-SFP Plus Release 1.0.2.2 ............................................................ 3
2.1 Upgrade Procedure............................................................................................................... 3
3. Known Issues for Switch 2848-SFP Plus Release 1.0.2.2........................................................ 4
3.1 SFP Frame Loss Issue ......................................................................................................... 4
4. Upgrading Software ..................................................................................................................... 5

3Com Baseline Switch 2848-SFP Plus V1.0.2.2 Release Notes
Page 2 of 5
1. Introduction
1.1 Scope
These release notes summarize the operational requirements and known issues for the
following 3Com product.
Software Release Filenames Description
1.0.2.2 3Com Baseline Switch 2848-SFP Plus
Model # 3C16486
Note: The software does not operate with any other
3Com switch
1.2 Online Resources
To obtain a copy of the 3Com Baseline Switch 2848-SFP Plus User Guide, visit the
3Com Web site: www.3Com.com
To obtain the latest technical information for your Switch, including a list of known
problems and solutions, visit the 3Com Knowledgebase:
http://knowledgebase.3Com.com
To obtain current software updates (maintenance releases) and associated release notes
for the Switch 2848-SFP Plus and other 3Com products, visit the 3Com Web site:
www.3com.com

3Com Baseline Switch 2848-SFP Plus V1.0.2.2 Release Notes
Page 3 of 5
2. Issues Fixed in Switch 2848-SFP Plus Release 1.0.2.2
The following issues have been resolved in this release of this software.
2.1 Upgrade Procedure
•Losing connectivity or power-cycling during the upgrade procedure would result in
the switch entering failsafe mode. However from here it would not be possible to re-
install the switch software. This has been fixed in this release of code.

3Com Baseline Switch 2848-SFP Plus V1.0.2.2 Release Notes
Page 4 of 5
3. Known Issues for Switch 2848-SFP Plus Release
1.0.2.2
3.1 SFP Frame Loss Issue
•Occasionally, when a fibre cable is plugged into an SFP transceiver the SFP port is
unable to receive frames. This condition can be avoided by ensuring that no frame
transmissions or receptions occur on this port during link initialization.
The effect of this condition can be observed by checking the port statistics and seeing
that transmit frame counts are incrementing on this port, but receive frame counts do
not increment. Frame transmission and reception can be tested by sending ping
frames through the switch via this port and observing ping responses
and port statistics. To re-enable frame reception, reset the SFP port by unplugging
and plugging the fibre cable.

3Com Baseline Switch 2848-SFP Plus V1.0.2.2 Release Notes
Page 5 of 5
4. Upgrading Software
For instructions on how to upgrade the Switch to this firmware version, please refer to the
3Com Baseline Switch 2848-SFP Plus User Guide (part number DUA1648-6AAA01).
Please note it is only necessary to upgrade the Switch to this version of code if you have a
Switch that was supplied with a previous version of the software. If you are unsure of the
version of software in your switch, refer to the User Guide for instructions on how to
determine the Software version.