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chnical information for your nown problems and Knowledgebase:

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compatible super set of ll previous versions of this support for the following:

ns of the Switch 4200 ort and Switch 4200 28-Port re Update Utility version 3.20

Hardware Version (up to and including)

03

03

04

300A) 04

302A) 04

304A) 04

Part No. 10016305-AAPublished August 2007

Related Docume

Please use thedocuments:

■ “Switch 42Part numbecovering thSwitch 42028-Port (3C

■ “Switch 42Part numbecovering th(3C17302)

■ “Switch 42Part numbe

■ “Switch 42Guide”Part numbe

■ “Switch 42Reference GPart numbe

SWITCH 4200 FAMILYSOFTWARE VERSION 3.04 RELEASE N

tation

notes in conjunction with the following

Family Getting Started Guide” DUA1730-0AAA04Switch 4200 26-Port (3C17300A), 50-Port (3C17302A) and Switch 4200 7304A)

Family Getting Started Guide” DUA1730-0AAA03Switch 4226T (3C17300), Switch 4250T d Switch 4228G (3C17304)

Family Implementation Guide” DUA1730-0BAA03

Family Management Quick Reference

DQA1730-0AAA03

Family Management Interface ide” DHA1730-0AAA03

You can obtain the latest teSwitch, including a list of ksolutions, from the 3Com

http://knowledgebas

About this Software Versi

The version 3.04 agent is afunctionality provided by aagent. This agent provides

The latest hardware versio26-Port, Switch 4200 50-Pwill only work with Softwa

Product

Switch 4226T(3C17300)

Switch 4250T(3C17302)

Switch 4228T(3C17304)

Switch 4200 26-Port (3C17

Switch 4200 50-Port (3C17

Switch 4200 28-Port (3C17

2 SWITCH 4200 FAMILY SOFTWARE VERSION 3.04 RELEASE NOTES

os

Issues ■

■

■

■

■

■

■

Upgrad

Aim333os

els and newer requires that you

e stack that are to Version 3.00. A-model units the itch 4200 units ion 3.04.

u upgrade all a previous ntact your 3Com re Upgrade offers twork.

customers at r Version 3.04 install process

aded for each

witch 4200

Tree

econd delay ng its link status running lization packets

not see some n a port activating an be reduced for

Start value for a

r later. This can be downloaded from the 3Com Web ite.

Addressed in Version 3.04Fixes PHY issue which caused disconnection from IBM T43 and HP laptops.

Prevents IP multicast address 234.0.0.1from flooding

Fixes TLB CPU exception issue.

Allows for adjustment of internal flow control on unit PHYs. This allows better streaming of data from Gigabit ports to 100 MB ports on 4200 A-type units.

Fixes an issue when deleting a VLAN from the database, that the next VLAN was also being deleted.

Fixes an issue with Telnet where the switch management stops responding.

Fixes internal issues with a process called the watchdog that could lead to system rebooting.

ing to Software Version 3.04

gent version 3.04 is delivered in two images: one age for 3Com hardware models 3C17300,

C17302 and 3C17304; and a separate image for Com hardware models 3C17300A, 3C17302A and C17304A. Version 3.00 is the minimum version for peration on the “A” models. Both versions of the oftware support the same features.

When you operate both older modA-models in a common stack, 3Comupgrade all Switch 4200 units in thrunning a previous software agent 3Com grants registered owners of right and license to upgrade all Swoperating in the same stack to Vers

3Com strongly recommends that yoSwitch 4200 units that are runningsoftware agent to Version 3.04. Corepresentative for details on Softwafor all Switch 4200 units in your ne

Version 3.04 is available to eligible www.3Com.com. The download focontains both image variations. Theensures that the proper image is lospecific Switch 4200 unit.

Points to note when using the SSeries

Apple networks and Rapid Spanning

With default settings, there is a 4 sbetween a front panel port activatiand passing network traffic. When AppleTalk, which can transmit initiaduring this start-up time, you may network devices. The delay betweeits link status and passing network cedge devices by setting the stpFastport to "Enable".

ch 4200 Series 3

Hea

Con

re no longer active) vity.

is disabled by default ome legacy devices do rongly recommends s connected to these enabled on ports an result in incorrect

ch 4226T, Switch

pen VLANS. This agged packet (that is, N ID) is received at a

ber of that VLAN, the LAN filtering. As a orwarded if the rned by the Switch. own, the packet will the VLAN (s) on which

will not automatically 3Com TFTP server if ily for more than 15 s, the TFTP connection minutes before the ally.

Points to note when using the Swit

d-of-Line Blocking

This section applies to the Switch 4226T, Switch 4250T and Switch 4228G only.

If the Head of Line blocking settings have been changed from the default QoS setting, under very heavy network loading, where servers transmit large numbers of consecutive frames to multiple clients (i.e. using large window sizes), it is possible that other data streams may be disrupted due to local frame buffer capacity becoming exhausted. This could affect other network applications and in extreme conditions could cause stacked units to reconfigure from stacked to individual units in an unpredictable way.

figuring Link Aggregations

When creating a manual aggregation between two systems, the ports in the aggregation must not be physically connected together until the aggregation has been correctly configured at both ends of the link. Failure to configure the aggregation at both ends before physically connecting the ports can result in a number of serious network issues such as lost packets and network loops.

When configuring a manual aggregation, all member ports can only be selected from the same unit. Automatic aggregations (using LACP) can include ports from different units in a stack. However, only member ports from a single unit in the stack will be selected for activation. Upon failure, or disabling LACP on the active links, ports members from a different unit will be automatically activated (if all

members on the current unit athus ensuring resilient connecti

CAUTION: The LACP protocol in the version 3.00 software. Snot support LACP and 3Com stLACP remains disabled on portdevices (in rare cases, if LACP isconnected to these devices, it cnetwork configurations).

Using VLANs

This section applies to the Swit4250T and Switch 4228G only.

The Switch 4200 implements Omeans that if an IEEE 802.1Q tthe packet that contains a VLAport and that port is NOT a memSwitch does not perform any Vresult a tagged packet will be faddress has been previously leaHowever, if the address is unknonly be flooded to ports withinthe receive port is a member.

TFTP Upgrades

The Software Upgrade feature re-establish a connection to thethe connection is lost temporarseconds. In these circumstancewill timeout approximately 3.5upgrade can be restarted manu

4 SWITCH 4200 FAMILY SOFTWARE VERSION 3.04 RELEASE NOTES

KnownSoftwa

■

■

■

■

■

■

.5 and v6.0

can be accessed ating systems:

03

ynchronized merge. This or the network backward tree. Where units different terface are not ill choose one

to show the en a new d in the stack (via is will be set on all of whether the iffered from unit

from an existing t traffic loads are

y important when present. The

Problems with the Management reIf a port is unable to transmit packets due to an incorrect duplex mismatch setting or flow control is keeping the port continually in a pause state, management packets from the Switch can back up in the egress buffers and causes the Switch to stop passing packets on any port. Correcting the duplex mismatch and turning off flow control will fix this problem.

When setting up a SLIP IP address and an IP address for the unit you must ensure that the assigned IP addresses are different.

If you use Netscape to manage your Switch you may experience problems when trying to change the user password.

3Com recommends that if you use Netscape and you need to change the password you do so via the CLI command. To do this from the Web interface Device View, use the System > Telnet > Connect operation to start a Telnet connection and then use the security device user modify CLI command.

If the error The previous command window is still active is displayed when using the Web interface, you must close that window before you can select another operation. You should then press Reload (Netscape) or Refresh (Internet Explorer) in your Web browser.

The Switch 4200 Web interface can only be accessed by one of the following Web browsers:

■ Microsoft Internet Explorer v5

■ Netscape Communicator v7.1

■ Mozilla v1.0

■ The Switch 4200 Web interface on any of the following PC oper

■ Microsoft Windows 2000

■ Microsoft Windows XP

■ Microsoft Windows Server 20

■ Red Hat Linux 9

■ Solaris 7

■ Solaris 9

■ The spanning tree mode is not sbetween units following a stackshould not cause any problems fsince rapid spanning tree is fullycompatible with legacy spanningwithin the stack are operating inspanning tree modes, the User incapable of reflecting this. They wsetting or the other when askedcurrent spanning tree mode. Whspanning tree mode is configurethe user interface of any unit), thunits within the stack regardlessspanning tree mode previously dto unit.

■ When adding or removing unitsstack it is advisable to ensure thaat a minimum. This is particularlmultiple LACP aggregations are

atibility Issues 5

Kno

le auto-negotiation regated link (trunk).

unking) to work, ports link (trunk) must be e the incompatibility,

ng steps:

ou must disable TCMP t connects to a Switch

pported on the Switch

tion on the GBIC fiber s prior to placing them

face Reference Guide nies the Switch 4200 out configuring aggre-

d links are only Mbps, GBIC and SFP

e Switch do the

the Switch and run ble file.

server applications

Known Incomp

reason for this is that during the network reconfiguration that will accompany the addition or removal of a unit, it is possible that momentary network loops will occur. When a lot of traffic is present these loops could take several minutes to resolve and in the worst case may result in the need to reset the stack to complete the resolution.

■ If the Switch receives an IS-IS packet that is tagged with a VLAN ID of 0, the packet is discarded. All other VLAN IDs are switched correctly.

■ If you select the Bridge > Link Aggregation > Modify > LACP State web interface operation for a Switch that does not have any ports available or suitable for link aggregation, a blank screen displays without an accompanying error message. You can close this screen in the normal way.

■ Some operating system or web browsers allow you to disable pop-ups. Please note that pop-ups must be enabled for some web operations to work.

wn Incompatibility IssuesAn incompatibility exists in the default settings for Link Aggregation between the Switch 4200 and the following 3Com products when using fiber interfaces:

■ Switch 4007

■ Switch 3900

■ Switch 9300

■ CoreBuilder 9000 family

■ CoreBuilder 9400

■ CoreBuilder 3500

The products listed above disabwhen a port is added to an agg

In order for link aggregation (trat either end of an aggregatedidentically configured. To resolvyou must complete the followi

1 On any of the Switches listed, yon a trunk (aggregated link) tha4200 Series, as TCMP is not su4200 Series.

2 You must disable auto-negotiaports on the Switch 4200 Seriein an aggregated link.

Refer to the Management Interon the CD-ROM that accompaSeries for more information abgated links.

On the Switch 4200, aggregatesupported on the 10/100/1000ports.

Software UpgradesTo upgrade the software on thfollowing:

1 Locate the software update forthe (filename.exe) executa

2 If necessary, download the TFTPinto the management station.

6 SWITCH 4200 FAMILY SOFTWARE VERSION 3.04 RELEASE NOTES

3 Ina

4 L

5 PTlo

6 Ma

7 T

a

b

c

d

8 P

9 L

a

b

10 FC

11 S

12 Eth

13 Edu

4226T (3C17300), the Switch 4228G ith the prefix s42.

4200 26-Port -Port (3C17302A) 7304A), enter the

a mixture of 2 and t42

one after the

e, the message displays.

ocess, the FF Green, and a upgrade is pro-

plete, the Switch

)

y-to-use ages up to 1,500 es.

tain a copy of isit:

stall the TFTP server (file name 3ts01_04.exe) on Microsoft Windows 2000 or XP machine.

aunch the TFTP server application.

oint the Upload/Download default directory on the FTP server to the directory where the upgrade file is cated.

ake sure the Switch being upgraded has an IP ddress assigned to it.

elnet to the Switch.

To Telnet to the Switch, click Start in Microsoft Windows 2000, or XP machine.

Click Run.

In the text area, type telnet IP address

Click OK.

ress Enter to receive a login prompt.

og into the Switch management.

The default user login is admin.

There is no default password for admin (press Enter).

rom the main menu, select System, then select ontrol.

elect SoftwareUpgrade.

nter the IP address of the TFTP server connected to e Switch.

nter the upgrade file name. The file name you enter epends on the switch or switches you are pgrading:

■ If you are upgrading the Switch the Switch 4250T (3C17302) or (3C17304), enter the file name w

■ If you are upgrading the Switch (3C17300A), the Switch 4200 50or the Switch 4200 28-Port (3C1file name with the prefix t42.

■ If you are upgrading a stack withswitches that require both the s4upgrades, enter both filenames,other, separated by a space.

After you have entered the filenam'Software Upgrade in progress.....'

The entire time the upgrade is in prPower/Self test LED will flash ON/Oseries of dots will indicate that the gressing successfully.

When the software upgrade is comwill reboot itself.

3Com Network Management

3Com Network Supervisor (3C15100E

3Com Network Supervisor is an easapplication that discovers and manIP devices and 3Com NBX telephon

For more information on how to ob3Com Network Supervisor, please v

http://www.3com.com/3ns/

and Omissions 7

3Co

Doc

CLI o

/Down keys to recall a

can be used to edit the

to the start of the

back one character.

cter at the cursor.

to the end of the

forward one character.

rs from cursor to the

rs from cursor to the

performs as a ‘Delete’ ter to the right, rather

Documentation Errors

However, for larger networks and access to more major features, 3Com recommends 3Com Network Director, described below.

m Network Director (3C15500)

3Com Network Director is a standalone application that allows you to carry out key management and administrative tasks on mid-sized enterprise networks. By using 3Com Network Director you can discover, map and monitor all the devices on the network, backup and restore 3Com device configurations, configure 3Com devices across the network in a single operation (including VLANs and Traffic Prioritization) and gather historical performance information for your network and generate flexible reports.

For more information on how to obtain a copy of 3Com Network Director, please visit:

http://www.3com.com/3nd/

After installation, click LiveUpdate to add support for the latest 3Com products.

umentation Errors and Omissions

peration

The command line console supports cursor keys in VT100 compatible mode.

The Delete, backspace and Cursor Left/Right keys modify the command line.

You can also use the Cursor Upprevious command.

In addition, the following keys command line:

[Ctrl A] - moves the cursor command line.

[Ctrl B] - moves the cursor

[Ctrl D] - deletes the chara

[Ctrl E] - moves the cursor command line.

[Ctrl F] - moves the cursor

[Ctrl K] - delete all characteend of the line.

[Ctrl X] - delete all charactestart of the line

Note that the Delete key nowkey, that is it deletes the characthan as Backspace.

8 SWITCH 4200 FAMILY SOFTWARE VERSION 3.04 RELEASE NOTES

.

Copyright ©reserved. Uin the Unite

3Com, and

Windows isproduct namholders.

2002, 2003, 2004, 2005, 2006, 20073Com Corporation. All rights nless otherwise indicated, 3Com registered trademarks are registered d States and may or may not be registered in other countries.

the 3Com logo are registered trademarks of 3Com Corporation.

a registered trademark of Microsoft Corporation. Other brand and es may be registered trademarks or trademarks of their respective