3Com S2900-CMW520-R1108

3Com S2900-CMW520-R1108 Release Notes 

Keywords: resolved problems, software upgrading 

Abstract: This release notes describes the Switch 2900 V5.20 release with respect to hardware and 

Acronyms: 

software compatibility, released features and functions, resolved problems, software 

upgrading, and related documentation. 

Abbreviations Full spelling 

ACL Access Control List 

CLI Command line interface 

DHCP Dynamic Host Configuration Protocol 

FTP File Transfer Protocol 

GARP Generic Attribute Registration Protocol 

GVRP GARP VLAN Registration Protocol 

HGMP Huawei Group Management Protocol 

HTTP Hypertext Transfer Protocol 

ICMP Internet Control Message Protocol 

IGMP Internet Group Management Protocol 

IP Internet Protocol 

LACP Link Aggregation Control Protocol 

MIB Management Information Base 

MSTP Multiple Spanning Tree Protocol 

NDP Neighbor Discovery Protocol 

NTP Net Time Protocol 

QoS Quality of Service 

RADIUS Remote Authentication Dial-In User Service 

RMON Remote monitoring 

RSTP Rapid Spanning Tree Protocol 

SNMP Simple Network Management Protocol 

SP Strict priority 

SSH Secure Shell 

May 20, 2011 Page 1 of 35

Abbreviations Full spelling 

STP Spanning Tree Protocol 

TFTP Trivial File Transfer Protocol 

UDP User Datagram Protocol 

VLAN Virtual Local Area Network 

3ND 3Com network director 

May 20, 2011 Page 2 of 35


Table of Contents 

Version Information·········································································································································6 

Version Number ·········································································································································6 

Version History···········································································································································6 

Hardware and Software Compatibility Matrix·····························································································6 

Restrictions and Cautions ······························································································································7 

Feature List ······················································································································································8 

Hardware Features ····································································································································8 

Software Features······································································································································9 

Version Updates ············································································································································11 

Feature Updates ······································································································································11 

Command Line Updates ··························································································································13 

MIB Updates ············································································································································14 

Configuration Changes ····························································································································14 

Operation Changes in CMW520-R1108···························································································14 

Operation Changes in CMW520-R1106···························································································14 

Operation Changes in CMW520-R1101P09 ····················································································15 





Operation Changes in CMW520-R1101···························································································15 

Open Problems and Workarounds ··············································································································15 

List of Resolved Problems ···························································································································16 

Resolved Problems in CMW520-R1108 ··································································································16 

Resolved Problems in CMW520-R1106 ··································································································17 

Resolved Problems in CMW520-R1101P09····························································································17 





Resolved Problems in CMW520-R1101 ··································································································22 

Resolved Problems in V5.20 ESS 1101 ··································································································22 

Related Documentation·································································································································22 

Software Upgrading·······································································································································23 

Introduction ··············································································································································23 

Files Managed on Switch ·················································································································23 

Maintaining Software························································································································25 

Upgrading through CLI·····························································································································26 

May 20, 2011 Page 3 of 35


Boot Menu················································································································································27 

Software Upgrading via Console Port (Xmodem Protocol)······································································28 

Upgrading Bootrom ··························································································································28 

Upgrading Application ······················································································································30 

Software Upgrading via Ethernet Interface (FTP/TFTP)··········································································30 

Software Upgrading via TFTP ··········································································································30 

Software Upgrading via FTP ············································································································31 

BootRom auto update·······················································································································32 

Maintaining Application and Configuration File························································································33 

May 20, 2011 Page 4 of 35


List of Tables 

Table 1 Version history .............................................................................................................................. 6 

Table 2 Compatibility matrix....................................................................................................................... 6 

Table 3 Hardware features ........................................................................................................................ 8 

Table 4 Software features.......................................................................................................................... 9 

Table 5 Feature updates...........................................................................................................................11 

Table 6 Command line updates............................................................................................................... 13 

Table 7 MIB updates................................................................................................................................ 14 

Table 8 Default names and types of boot files......................................................................................... 23 

Table 9 Description on the three configuration files ................................................................................ 24 

May 20, 2011 Page 5 of 35


Version Information 

Version Number 

Version Information: V5.20 Release 1108 

Note: To display the version number, use the display version command in any view. See Note①. 

Version History 

Table 1 Version history 

Version number Last version 

6 

Release 

Date 

V5.20 Release 1108 V5.20 Release 1106 2011-5-13 None 

V5.20 Release 1106 V5.20 Release 1101P09 2010-5-21 None 

V5.20 Release 1101P09 V5.20 Release 1101P07 2010-03-26 None 




V5.20 Release 1101P02 V5.20 RELEASE 1101 2009-08-20 None 

Remarks 

V5.20 RELEASE 1101 V5.20 ESS 1101 2009-06-23 Manufacture version 

V5.20 ESS 1101 None 2009-05-12 First release 

Hardware and Software Compatibility Matrix 

Table 2 Compatibility matrix 

Item Specifications 

Product family Switch 2900 series 

Hardware platform 

Minimum memory 

requirements 

Minimum flash 

requirements 

Boot ROM version 

2920-SFP Plus 

2928-SFP Plus 

2952-SFP Plus 

2928-PWR Plus 

2928-HPWR Plus 

128 M 

128 M 

V139 (Note: This version number can be displayed by command 

display version under any view. Please see Note②)


Item Specifications 

Host software S2900-CMW520-R1108.bin 

iMC version 

iMC PLAT 5.0-E0101 + L02 

iMC QoSM 5.0-E0101 

iMC UAM 5.0-E0101 

iNode version iNode PC 5.0-E0101 

Remarks None 

Sample: Display version information. 

[S2952] display version 

3Com Corporation 

3Com Baseline Switch 2952-SFP Plus Software Version 5.20 Release 1108 

---- Note① 

Copyright (c) 2004-2010 3Com Corp. and its licensors. All rights reserved. 

3Com Baseline Switch 2952-SFP Plus uptime is 0 week, 0 day, 0 hour, 52 minutes 

3Com Baseline Switch 2952-SFP Plus 

128M bytes DRAM 

128M bytes Nand Flash Memory 

Config Register points to Nand Flash 

Hardware Version is REV.B 

CPLD Version is 002 

Bootrom Version is 139 ---- Note② 

[SubSlot 0] 48GE+4SFP Hardware Version is REV.B 

Restrictions and Cautions 

When configuring the 2900, be sure that you are aware of these restrictions and cautions: 

Please avoid powering off the device when executing commands like "save" which writes 

something to flash. 

The device does not show multicast MAC addresses learned on a port by the port index. 

A VCT test on a linked-up port cannot detect the length of the connected cable. 

The LED indicators of SFP ports will flash only when packets are being received; the LED keeps 

solid when sending packets. 

For 2952-SFP which hardware version is “REV.A”, the release older than V5.20 Release 

R1101P09 is forbidden, and the BootRom older than 119 is forbidden. Using the summary 

command the hardware version can be showed. And the hardware version also can be showed 

in the WEB -> Summary -> System Information page. 

7


Feature List 

Hardware Features 

Table 3 Hardware features 

Item Description 

Physical dimensions (H 

× W × D) 

Weight 

Console port 1 

Service ports 

Input voltage 

43.6 × 440 × 160 mm (1.72 × 17.32 × 6.30 in.) (2920-SFP Plus) 

43.6 × 440 × 160 mm (1.72 × 17.32 × 6.30 in.) (2928-SFP Plus) 

43.6 × 440 × 260 mm (1.72 × 17.32 × 10.24 in.) (2952-SFP Plus) 

43.6 × 440 × 420 mm (1.72 × 17.32 × 16.54 in.) (2928-PWR Plus) 

43.6 × 440 × 420 mm (1.72 × 17.32 × 16.54 in.) (2928-HPWR Plus) 

≤3 kg (6.61 lb) (2920-SFP Plus) 

≤3 kg (6.61 lb) (2928-SFP Plus) 

≤ 5 kg (11.02 lb) (2952-SFP Plus) 

≤7 kg (15.43 lb) (2928-PWR Plus) 

≤7 kg (15.43 lb) (2928-HPWR Plus) 

16 × 10/100/1000Base-T autosensing Ethernet ports + 4 GE SFP 

interfaces (2920-SFP Plus) 






interfaces (2928-PWR Plus) 


interfaces (2928-HPWR Plus) 

AC: 

Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz 

Maximum voltage range: 90 VAC to 264 VAC, 47 Hz or 63 Hz 

DC: 

Use the external RPS unit provided by 3Com only, with the rated 

voltage ranging from –52 VDC to –55 VDC 

Only 2928-HPWR Plus supports RPS DC input, and the supported unit 

is RPS1000-A3 only. 

8



Power consumption 

Power consumption (full 

configuration) 

11.9W (2920-SFP Plus) 

13.4W (2928-SFP Plus) 

25.7W (2952-SFP Plus) 

25.0W (2928-PWR Plus) 

AC: 45.6W (2928-HPWR Plus) 

DC: 27.5W (2928-HPWR Plus) 

25.1 W (2920-SFP Plus) 

31.5 W (2928-SFP Plus) 

59.8 W (2952-SFP Plus) 

255 W (85 W for system power consumption and 170 W for PoE power 

consumption) (2928-PWR Plus) 

AC power input: 523 W (158 W for system power consumption and 370 

W for PoE power consumption) (2928-HPWR Plus) 

DC power input: 832 W (92 W for system power consumption and 740 

W for PoE power consumption)) (2928-HPWR Plus) 

Operating temperature 0°C to 45°C (32°F to 113°F) 

Operating humidity 

(noncondensing) 

Software Features 

Table 4 Software features 

10% to 90% 

Category Features 

Link aggregation 

Support dynamic aggregation of Gigabit Ethernet (GE) ports 

Dynamic link aggregation through Link Aggregation Control Protocol 

(LACP) 

Support manual link aggregation 

Support up to (total number of ports/2) link aggregation groups, each 

supporting up to eight GEs 

Flow control IEEE 802.3x flow control and back pressure 

Jumbo Frame Supports maximum frame size of 10 KB 

MAC address table 

8K MAC addresses 

1K static MAC addresses 

Blackhole MAC addresses 

MAC address learning limit on a port 

9


VLAN 

ARP 


VLAN virtual interface 8 

DHCP 

Broadcast/multicast/uni 

cast storm control 

MSTP 

QoS/ACL 

Port-based VLANs (256 VLANs) 

Voice VLAN 

256 entries 

64 static entries 

DHCP Client 

DHCP Snooping 

DHCP Relay 

Mirroring Support port mirroring 

Security features 

802.1X 

Loading and upgrade 

Storm control based on port rate percentage 

PPS-based storm control 

bps-based storm control 

STP/RSTP/MSTP protocol 

Support 4 spanning tree instances 

Support STP Root Protection 

Support BPDU Protection 

Support 802.1p/DSCP precedence marking 

Support four queues per port 

Support SP, WRR, and SP+WRR queue scheduling algorithms 

Support port-based line rate, with a minimum of 64-kbps granularity 

Support flow-based traffic redirecting 

Support time ranges 

Support hierarchical management and password protection of users 

Support AAA authentication 

Support RADIUS authentication 

Support port isolation 

Support 802.1X 

Up to 1024 users 

Support port-based and MAC address–based authentication 

Support Guest VLAN 

Support loading and upgrade through XModem protocol 

Support loading and upgrade through trivial file transfer protocol 

(TFTP) 

10


Management 

Maintenance 


Version Updates 

Feature Updates 

Table 5 Feature updates 

Version 

Number 

CMW520- 

R1108 


R1106 


R1101P09 


R1101P07 


R1101P06 

Support Simple Network Management Protocol (SNMP) 

Support Remote Monitoring (RMON) alarm, event and history 

recording 

Support DM NMS 

Support Web NMS 

Support system log 

Support hierarchical alarms 

Support Stacking management 

Support NTP 

Support power, fan, and temperature alarms 

Support debugging information output 

Support packet internet groper (ping) and Tracert 

Support virtual cable test 


Hardware 

feature updates 

Software feature 

updates 

Hardware 



updates 

Hardware 



updates 

Hardware 



updates 

Hardware 



updates 

None 

None 

None 

Supporting time-zone configuration in Web. 

In Web-> Device -> System Time -> System Time page, 

System TimeZone configuration is added. 

Support new main board of 2952-SFP 

None 

None 

New features: 

Adding context sensitive help for web management. 

None 

None 

CMW520- Hardware None 

11


Version 

Number 

R1101P05 




updates 

Hardware 

CMW520- feature updates 

R1101P02 


updates 


R1101 

V5.20 ESS 

1101 

Hardware 



updates 

Hardware 



updates 

New features: 

1) Supporting PoE+ capability announcement for LLDP. 

2) Supporting power supply to Non-standard compatible PD. 

3) Supporting IGMP snooping querier function. 

None 

None 

None 

None 

First release 

First release 

12


Command Line Updates 

Table 6 Command line updates 

Version 

number 




R1106 


R1101P09 


R1101P07 


R1101P06 


R1101P05 


R1101P02 


R1101 

V5.20 ESS 

1101 


New commands None 

Removed commands None 

Modified commands None 






















New commands First release 

Removed commands First release 

Modified commands First release 

13


MIB Updates 

Table 7 MIB updates 

Version 

Number 




R1106 

Item MIB File Name Module Name Description 

New None None None 

Modified None None None 


Modified a3com-huaweientity-ext.mib 

A3COM- 

HUAWEI- 

ENTITY-EXT- 

MIB 

CMW520- New None None None 

R1101P09 



R1101P07 



R1101P06 




R1101P05 Modified a3com-huaweisplat-devm.mib 

A3COM- 

HUAWEI- 

LswDEVM-MIB 


R1101P02 



R1101 

Configuration Changes 



Operation Changes in CMW520-R1108 

None 

Operation Changes in CMW520-R1106 

14 

Add a new trap type: 

h3cEntityExtMemAllocat 

edFailed 

Not support 

hwdevMSlotEnvironment 

Table 

A save option is added in the main interface, which is a shortcut for saving configuration. Please see 

the demonstration below.


Operation Changes in CMW520-R1101P09 

None 


Note: This operation change is only related to S2928-PWR Plus and S2928-HPWR Plus. 

In previous versions, when mode button is pressed, the port mode LED will change to PoE mode and 

then change back to rate mode after 45s automatically. From Release 1101P07, this automatic 

changing back to rate mode will not happen. The mode button needs to be pressed again in order to 

change back to rate mode. This change in operation is to keep consistency with other product series. 


Upgrade the Max Power of the Switch 2928-HPWR from 365W to 370W for PoE power consumption 

while the Power Supply Unit is AC. 


None 


None 

Operation Changes in CMW520-R1101 

None 

Open Problems and Workarounds 

LSD44945 

First Found in Version: CMW520-R1101P06 

Description: In following illustration network, all 2900s and the PC are in the same sub-network. 

MSTP is configured to avoid loop and all 2900 belong to instance 0. Shutdown G1/0/49 of the 

Root Bridge (2900_2 in this illustration) and at the same time Ping 2900_1 from PC, the ping will 

break off for about 30s. 

Avoidance: Configure stp no-agreement-check in those root ports. 

15


LSD47414 

g1/0/50 

g1/0/49 

2900_5 

2900_2 

(Root Bridge) 

g1/0/5 

pc 

g1/0/11 g1/0/11 2900_1 

IP:172.20.15.21 

g1/0/15 

g1/0/1 

g1/0/3 


16 

2900_3 

IP:172.20.15.19 

g1/0/1 

g1/0/1 

Alternate port 

2900_4 

g1/0/15 

Description: On web page, some descriptions of the IPv4 ACL on-line help are not consistent with 

the web descriptions. 

Avoidance: None 

LSD47418 


Description: Create a user, and specify the access level of the user to visitor, the user can not 

login the web. 

Avoidance: Don't specify the access level of the user to visitor. 

LSD47162 


Description: Configuring QoS through the iMC, while the operation is failed, the information is still 

successful. 

Avoidance: Use Web to configure. 

List of Resolved Problems 

Resolved Problems in CMW520-R1108 

LSD60150 

First Found in Version: CMW520-R1101 

Condition: On Web page Device->System Time, select NTP option, configure Source Interface 

and NTP Server1 but without the NTP authentication key, apply and save the configuration, then 

reboot. 

Description: The NTP frames include the Key ID message which is excrescent.


Resolved Problems in CMW520-R1106 

LSD47255 


Condition: On Web page, firstly create aggregation group including several ports, then click the 

Select All and Select None buttons in the Device->Port Management->Setup page. 

Description: When click Select All button, all ports be selected including aggregation port; while 

ZDD02723 

click Select None button, the aggregation port is not included. 


Condition: Enable DHCP Snooping and configure DHCP Snooping trust in port A, then sending 

DHCP offer packets into port A. 

Description: Broadcast storm is occurred in network. 

ZDD02931 


Condition: Device receives a SNMPv1 get packet in which the number of the binding variable is 

nonzero, but the binding OID is null. 

Description: Device reboots abnormally. 

ZDD02936 


Condition: Create L2 aggregation group and add link-up ports into the group, then get the 

aggregation group status through the MIB node ifOperStatus. 

Description: The group status is displayed as down, however the corresponding actual status is 

up. 

Resolved Problems in CMW520-R1101P09 

LSD46967 


Condition: Send the ICMP echo requests which TTL value is 1 to the device. 

Description: There is no responds from the device. 


LSD44350 


Condition: First, on web page, select Network > IPv4 Routing > Remove, delete the default 

routing, then execute the summary command from the CLI, the Default gateway is still displayed. 

Then configure the IP address and the default gateway which is same as the foregoing gateway 

by the ipsetup command from the CLI. 

Description: The reconfigured default gateway is not functional. 

17


LSD44372 


Condition: Configure a VLAN interface and navigate to Network > VLAN Interface > Summary 

page. 

Description: The content of VLAN interface table is not aligned to the table heading. 


LSD41531 


Condition: View the MAC-Port Binding Management tab of the Address Binding Management 

Module by the iMC PLAT version 3.20-R2602P06. 

Description: Only the first page of the MAC address list could be showed in, and any try to the 

LSD41944 

other pages will cause the reading fail information. 


Condition: When the Statistic value of the RMON Statistics is larger than 0xffffffff. 

Description: The Statistic value is not precision. 

LSD42053 


Condition: Setting the VLAN description string more than 18 characters, on web page, select 

Network > VLAN from the navigation tree. 

Description: The Select VLAN tab is displayed. In VLAN summary, a character is lost at the word 

wrap of the corresponding Description item. 

LSD41910 


Condition: 20 percent traffic into one interface, Create an entry in the RMON statistics table on 

the interface, Create five entries in the RMON history control table on the interface. 

Description: Display RMON history control entry and history sampling information. The packets 

sampling information of five entries are almost the same. But the octets and the utilization 

sampling information differ. 

LSD43124 


Condition: On web page, select Device > User > Modify. To change the password on the default 

user "admin", there are on 2 service-type options, FTP and Telnet. If a user selects either option, 

the default existing service-types (SSH, Telnet, Terminal) will be overwritten with either FTP or 

Telnet. 

Description: Console access denied. 

LSD43577 


18


Condition: When configure the default gateway from the CLI, access the Web-UI and save the 

configuration, then reboot the switch from the CLI, access the console and execute the summary 

command. 

Description: The configured default gateway will not be displayed. 

LSD42547 


Condition: Windows Internet Explorer 7 or Windows Internet Explorer 8. On web page, Select 

PoE > PoE from the navigation tree and click the PSE Setup tab. 

Description: The PSE Setup web page will not be displayed. 

LSD43694 

First Found in Version: 

Condition: Connect to other switches via the SFP ports. 

Description: Need to force the speed and duplex to 1000 FULL on both ends for it to connect and 

pass traffic. 

LSD43502 

First Found in Version: 

Condition: Update the Boot ROM program by the upgrade command with an invalid Boot ROM 

file. 

Description: The switch maybe prints exceptions and reboot. 


LSD39906 


Condition: On web page, select Device > User->Modify. A customer has found that if they 

inadvertently try to change the password on the default user "admin", there are on 2 service-type 

options, FTP and Telnet. If a user selects either option, the default existing service-types (SSH, 

Telnet, Terminal) will be overwritten with either FTP or Telnet. 

Description: This disable disables console access. 

LSD39906 


Condition: On web page, select Device > SNMP from the navigation tree, and enter the User tab. 

Description: The link of the group of an exiting SNMP user is unusable. 

LSD40358 


Condition: On Mozilla Firefox web page, select QoS > Classifier > Setup, in the ACL edit box. 

Description: The list box is unusable. 

LSD40358 


19


Condition: On web page, select QOS > Behavior > Port Setup, select a Behavior, click the 

check box Redirect, select disable, click the apply button with none port selected. 

Description: A blank dialog box appears. 

LSD40570 


Condition: On web page, the Advanced Configuration Max Mac Count in the Device > Port 

Management > Setup web page can’t be apply to link aggregation group. 

Description: This will cause the invalid of the max Mac limit on aggregation group, or prevent the 

LSD40674 

aggregation’s member port which has been configured the max Mac limit from becoming a 

selected port. 

First Found in Version: CMW520-E1101 

Condition: Setting binding MAC address on the MAC-Port Binding Management tab of the iMC 

Platform’s DM component. 

Description: The operation will fail. 

LSD40370 


Condition: Shut down one port and running virtual-cable-test on this port. 

Description: The switch becomes no response and not operational for a long period. 

LSD40717 


Condition: Reboot the switch using iMC DM. 

Description: The switch prints exceptions and reboot. 

ZDD02171 


Condition: Switch work as Telnet client or server. Input non-English character after login. 

Description: Possible unexpected logout. 

LSD40758 


Condition: Setting the redirect rule under the port by the iMC-QoSM component, and then 

viewing the configuration through the Web page. 

Description: The content of the Redirect destination has a VLAN configuration which is useless. 

As follows. 

20


LSD41365 


Condition: Browsing pages such as QoS through Firefox version 3.5.1 

Description: The page is not handsome due to a flaw of frames. 

LSD41523 


Condition: Adding Link-Aggregation interface on iMC 

Description: The link aggregation ID for Link-Aggregation interface beyond its supported range 

LSD40823 

can be added also. 


Condition: On web page, select Authentication > PKI > Entity > Add, Input Entity Name, 

Common Name and ip address 1.2.3.4, Press Apply button. 

Description: The column of ip address display 4.3.2.1. 

LSD41325 


Condition: Only default domain system exists, On web page, select Authentication > AAA > 

Domain Setup, Click Domain Name select box. 

Description: The domain name display incorrectly. 

LSD41328 


Condition: Configure acl number 2000-2010, On Firefox web page, select QOS > classifier > 

Setup, Check the ACL IPv4 check box, click the ACL IPv4 select box. 

Description: The acl number display incorrectly. 

LSD40975 


21


Condition: Delete the MAC address, keep the corresponding ARP entry, and then the MAC 

address is learnt on another port. 

Description: The corresponding ARP entry does not update to the new port. 

LSD40812 


Condition: On Web Page, Selecting Device > Port Management > Detail, look up the duplex 

status of the port. 

Description: The result doesn't remark full or half duplex 

LSD40630 


Condition: On Web Page, selecting Network > LLDP > Port Setup, display Neighbor Information 

with character &. 

Description: The page of Neighbor Information can’t be browsed. 


LSD10100 


Condition: Under -20°C, heavy traffic is running on the switch 2952-SFP. 

Description: Slight packet loss may occasionally occur on ports 29-32. 

Resolved Problems in CMW520-R1101 

1. LSD39116 


Condition: Under the WEB NMS, apply adding the aggregation port into the VLAN in the 

Network > Vlan > ModifyVlan web page, then a schedule dialog box is popped. 

Description: The web page will be locked. 

Resolved Problems in V5.20 ESS 1101 

None 

Related Documentation 

For the most up-to-date version of documentation: 

1) Go to http://www.3Com.com/downloads 

2) Select Documentation for Type of File and select Product Category. 

22


Software Upgrading 

Upgrade software only when necessary and under the guidance of a technical support engineer. 

Introduction 

Files Managed on Switch 

Boot ROM image file 

Boot ROM image file is the bootstrap file used at startup of your switch. It comprises two segments: 

basic and extended. 

Application image file 

The 2900 series is available with the dual image function. By default, the system defines and attempts 

to boot in order with three boot files, main, backup, provided they are available on the flash. To 

change this order or a boot file, refer to section “Maintaining Application and Configuration File”. 

The following table gives default names and types of boot files. 

Table 8 Default names and types of boot files 

Boot file File name File type 

Main boot file main.bin M 

Backup boot file backup.bin B 

The system can boot only with a boot file that is type M, B , but not type N. in The boot files are 

stored on the Flash, but only one for each type. For example, if a type M+B file exists, it is 

impossible to have another M or B file. If you change the file type of another file to B, the M+B file 

becomes a type M file. 

You can modify the type of type M/B and N application image files in the Boot ROM menu or 

using web after the application image boots up. 

Configuration file 

A configuration file stores the configurations of the switch. 

23


By default, the system defines and attempts to boot in order with three startup configuration files: 

main, backup, and default, provided they are available on the flash. To change this order or a startup 

configuration file, refer to section “Maintaining Application and Configuration File”. 

The following table describes the three configuration files. 

Table 9 Description on the three configuration files 

Configuration file File type Description 

Main configuration file M The default startup configuration file. 

Backup configuration file B 

Default configuration file M/B/N 

24 

The system boots with this file in case it fails 

to boot with the main configuration file. 

The system attempts to boot with this file in 

case it fails to boot with the backup 

configuration file. In case the attempt still 

fails, the system boots with empty 

configuration. 

The name of the default configuration file 

varies by device. 

You can handle the default configuration file 

as you would with any common configuration 

file to set its attribute to main or backup. 

Only type N default, type M, and type B configuration files can become a startup configuration file. 

A type N non-default configuration cannot be used at startup. 

You can modify the name of a configuration file on the Flash on the web after the application 

boots up. You can modify the type of a configuration file on the web after the application boots up. 

The type of the default configuration file cannot be changed. 

Only one type M and one type B configuration file can exist on the Flash. For example, if an M+B 

configuration file is present, no type M or type B configuration file can exist. If you change the file type 

of another configuration file to B, the M+B file changes to a type M file.


The file name cannot be longer than 64 characters (including the drive letters and a string 

terminator. If the drive letters are flash:/, the file name can be up to 59 (64 – 4 – 1) characters in 

length. Using a longer file name will result in file operation error. The file name is recommended 

to be less than 16 characters. 

The extension ASCII characters (ASCII>=128) and invisible characters (ASCII


Figure 1 Boot ROM and application images upgrade procedure 

Start 

Application image version 

Upgrade ? 

Select an upgrade method 

Xmodem 

Y 

Identify the version 

TFTP FTP 

Upgrade 

Via network 

interface 

End 

Upgrading through CLI 

N 

You may upgrade the application and Boot ROM program of a device remotely through command line 

interface (CLI). get the application and Boot ROM program, 2900_app.bin and Boot.btm for example, 

from the TFTP server as follows: 

Step 1: configure ip address 

ipsetup ip-address 192.168.1.122 24 

Step 2: upgrade application 

upgrade 192.168.1.132 2900_app.bin runtime 

The file flash:/2900_app.bin exists. Overwrite it? [Y/N]:y 

Verifying server file... 

File will be transferred in binary mode 

Downloading file from remote TFTP server, please wait.../ 

TFTP: 9711592 bytes received in 186 second(s) 

File downloaded successfully. 

26


The specified file will be used as the boot file at the next reboot. 

Step 3: upgrade BOOTROM 

upgrade 192.168.1.132 boot.btm bootrom 

File will be transferred in binary mode 

Downloading file from remote TFTP server, please wait...| 

TFTP: 253700 bytes received in 2 second(s) 

File downloaded successfully. 

BootRom file updating finished! 

reboot 

After getting the new application file, reboot the device to have the upgraded application take effect. 

Note that if you do not have enough Flash space, upgrade the Boot ROM program first, and then FTP 

the application to the device. 

Boot Menu 

Upon power-on, the switch runs the Boot ROM program first. The following information will be 

displayed on the terminal: 

Starting...... 

************************************************************************ 

* * 

* 3COM 2928-SFP Plus BOOTROM, Version 119 * 

* * 

************************************************************************ 

Creation Date : Feb 3 2010 

CPU L1 Cache : 32KB 

CPU Clock Speed : 333MHz 

Memory Size : 128MB 

Flash Size : 128MB 

CPLD Version : 001 

PCB Version : Ver.B 

Mac Address : 00E0FC003620 

Press Ctrl-B to enter Extended Boot menu...0 

After the screen displays “Press Ctrl-B to enter Boot Menu...”, you need to press within 5 

seconds to access the Boot menu. Otherwise, the system will start program decompression, and then 

you have to reboot the switch to access the Boot menu. 

The system displays: 

27


Password : 

Enter the correct password (no password is set by default) to access the Boot menu. 

Please keep in mind the modified Boot ROM password. 

BOOT MENU 

1. Download application file to flash 

2. Select application file to boot 

3. Display all files in flash 

4. Delete file from flash 

5. Modify BootRom password 

6. Enter BootRom upgrade menu 

7. Skip current system configuration 

8. Set BootRom password recovery 

9. Set switch startup mode 

0. Reboot 

Enter your choice(0-9): 

Software Upgrading via Console Port (Xmodem Protocol) 

Upgrading Bootrom 

Step 1: Enter 6 in the Boot menu and press to access the menu. 

1. Update full BootRom 

2. Update extended BootRom 

3. Update basic BootRom 

0. Return to boot menu 

Bootrom update menu: 

Enter 1 and press to access the menu. 

Bootrom update menu: 

1. Set TFTP protocol parameter 

2. Set FTP protocol parameter 

3. Set XMODEM protocol parameter 


Enter your choice(0-3):3 

Step 2: Enter 3 to select the Xmodem protocol and press . The following information appears: 

Please select your download baudrate: 

1. 9600 

2. 19200 

28


3.* 38400 

4. 57600 

5. 115200 


Step 3: Select the appropriate download baud rate. For example, enter 5 to select the download baud 

rate of 115200 bps. Press and the following information appears: 

Download baudrate is 115200 bps 

Please change the terminal's baudrate to 115200 bps and select XMODEM protocol 

Press enter key when ready 

Step 4: Configure the same baud rate on the console terminal, disconnect the terminal and reconnect 

it. Then, press to start downloading. The following information appears: 

Now please start transfer file with XMODEM protocol 

If you want to exit, Press 

Loading ... CCCCC 

After the terminal baud rate is modified, it is necessary to disconnect and then re-connect the terminal 

emulation program to validate the new setting. 

Step 5: Select [Transfer\Send File] from the terminal window. Click in the pop-up window 

and select the software to be downloaded. Select Xmodem from the Protocol drop down list. 

Figure 2 Send File 

Step 6: Click and the following window appears. 

29


Figure 3 Xmodem File Send 

Step 7: After the downloading of the program is completed, the screen will display the following 

information: 

Done! 

Will you Update Basic BootRom? (Y/N):Y 

Updating Basic BootRom...Done! 

Updating extended BootRom? (Y/N):Y 

Updating extended BootRom...Done! 

Please change the terminal's baudrate to 38400 bps, press ENTER when ready. 

Press enter key when ready 

Upgrading Application 

Step 1: Enter 1 in the Boot menu. Press and the system will access the download program 

menu. 

1. Set TFTP protocol parameters 

2. Set FTP protocol parameters 

3. Set XMODEM protocol parameters 


Enter your choice(0-3):3 

Enter 3 and press will enter XModem configuration menu, from here, it’s almost same with 

upgrading bootrom described in previous section. The difference is that when choosing a file, 

application file instead of bootrom file should be selected. 

Software Upgrading via Ethernet Interface (FTP/TFTP) 

Software Upgrading via TFTP 

1) Introduction to TFTP 

The Trivial File Transfer Protocol (TFTP) employs UDP to provide unreliable data transfer service. 

30


2) Upgrade procedure 

Step 1: Connect an Ethernet interface of the switch to the PC where the program files are located, 

and connect the console port of the switch to the same PC. 

Step 2: Run the TFTP server program on the PC, and put the program files into a file directory. 

Switch 2900 series are not shipped with TFTP server program. 

Step 3: Run the terminal emulation program on the PC, and start the switch, to access the Boot menu. 

Step 4: Enter 1 in the Boot menu, and press to enter the following menu. 





Enter your choice(0-3): 1 

Step 5: Enter 1 to use TFTP, and press . The following information appears: 

Load File Name :2900_app.bin 

Server IP Address : (IP address of the PC where the file is stored) 

Local IP Address : (IP address of the 2900) 

Gateway IP Address : (IP address of the gateway) 

Step 6: Input correct information and press . The following information appears: 

Are you sure to download file to flash? Yes or No(Y/N) 

Step 7: Enter Y to start downloading the files. Enter N to return to the Boot menu. Take entering Y as 

an example. Enter Y and press , the system begins downloading programs. After downloading 

completes, the system starts writing the programs to the flash. Upon completion of this operation, the 

screen displays the following information to indicate that the downloading is completed: 

Loading ........................................................done! 

Writing flash...................................................done! 

Software Upgrading via FTP 

1) Introduction to FTP 

The 2900 can serve as an FTP server or client. In the following example, it serves as an FTP client. 

2) Upgrade procedure 

Step 1: Connect an Ethernet interface of the swtich to the PC where the program files are located, 

and connect the console port of the switch to the same PC. 

Step 2: Run the FTP server program on the PC, and put the program files into a file directory. 

31


Step 3: Run the terminal emulation program on the PC, and start the switch to access the Boot menu. 

Step 4: Enter 1 in the Boot menu and press to access the following menu. 






Step 5: Enter 2 to select FTP and press . The following information appears: 

Load File Name :2900_app.bin 

Server IP Address : 192.168.1.132 

Local IP Address : 192.168.1.133 

: 

Gateway IP Address : 

FTP User Name :2900 

FTP User Password :2900 

Step 6: Input correct information and press . The following information appears: 

Are you sure to download file to flash? Yes or No(Y/N): 

Step 7: Enter Y to start downloading the files. Enter N to return to the Boot menu. Take the first case 

as an example. Enter Y and press , and the system begins downloading programs. After 

downloading completes, the system starts writing the programs into the flash. Upon completion of this 

operation, the screen displays the following information to indicate that the downloading is completed: 

Loading ........................................................done! 

Writing flash...................................................done! 

BootRom auto update 

The BootRom is packed with application, when BootRom boot the application, it check the version of 

the BootRom, if the version is not the same, the BootRom will be auto updated. 


************************************************************************ 

* * 


* * 

************************************************************************ 

Creation Date : Apr 16 2009 









32


Starting to get the main application 

file--flash:/S2900-CMW520-E1101_B2D2SP1.bin!................................... 

....................................... 

The main application file is self-decompressing................................ 

........................................................................................ 

........Done! 

Extend BootWare Version is not equal,updating? (Y/N): 

Updating extended BootRom...Done! 

Basic BootWare Version is not equal,updating? (Y/N): 

Updating Basic BootRom...Done! 

BootWare updated,System is rebooting now. 


************************************************************************ 

* * 


* * 

************************************************************************ 

Creation Date : Apr 17 2009 








the normal and back basic is not equal, update back basic.... 

the normal and back extend is not equal, update back extend.... 


Starting to get the main application 

file--flash:/S2900-CMW520-E1101_B2D2SP1.bin!................................... 

....................................... 

The main application file is self-decompressing................................ 

........................................................................................ 

........Done! 

System is starting... 

User interface aux0 is available. 

Maintaining Application and Configuration File 

You can display files and modify their types in the Boot ROM main menu: 

33


Display all files 

In the main Boot ROM main menu, enter 3. The system displays: 

Display all file(s) in flash: 

File Number File Size(bytes) File Name 

=============================================================================== 

1(*) 9711592 s2900-cmw520-e1101.bin 

Free space: 89245696 bytes 

The current application file is S2900-CMW520-E1101.bin 

(*)-with main attribute 

(b)-with backup attribute 

(*b)-with both main and backup attribute 

Set application file to boot 

In the main Boot ROM main menu, enter 2 to access the setting application to boot menu: 

1. Set application file 




=============================================================================== 

1(*) 9711592 s2900-cmw520-e1101.bin 





Please input the file number to change: 1 

Please input the file attribute (Main/Backup/None) m 

The attribute of S2900-CMW520-E1101.bin keeps main attribute! 

Next time, s2900-cmw520-e1101.bin will become default boot file! 

Do you want to run s2900-cmw520-e1101.bin now? Yes or No (Y/N):Y 

Starting to get the main application file--flash:/S2900-CMW520-E1101.bin!...... 

.................................................................... 

Enter any number to set the file type to M, remove the type setting of M-type file, set the file type to B, 

and remove the type setting of B-type file. Refer to section “Introduction” for more information about 

file types. 

Delete files 

Enter 4 in the main Boot ROM main menu to remove files: 

Deleting the file in flash: 


34


=============================================================================== 

1(*) 9711592 s2900-cmw520-e1101.bin 


The current application file is S2900-CMW520-E1101.bin 




Please input the file number to change: 

Input the file number and press Enter. The system displays the following to indicate a successful file 

removal: 

Deleting......Done! 

When removing a file, make sure that the correct file is used. During the removal operation, you will 

not be asked to confirm the operation. 

Copyright © 2010, 3Com Corporation. All Rights Reserved. 

3Com and the 3Com logo are registered trademarks of 3Com Corporation or one of its subsidiaries. Unless otherwise indicated, 

3Com registered trademarks are registered in the United States and may be registered in other countries. Other brand and 

product names may be registered trademarks or trademarks of their respective holders. 

35

3Com S2900-CMW520-R1108

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