3Com 3CB9LF20R, 3CB9LF36RL, 3CB9LF36TL, 3CB9LG9MC, 3CB9LF20MM, 3CB9LF10MC manual Web-based

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30CHAPTER 3: RELEASE ISSUES

Management

You may experience slow performance (response time) when you

 

perform a walk of the a3Com.29 MIB, particularly when you request

 

the following fields:

 

a3ComBridgePortAddressBridgeIndex

 

a3ComBridgePortAddressPortIndex

 

Performing a walk of this MIB may also affect the performance of the

 

Administration Console interface and other management functions.

 

The 36-port 10/100BASE-TX Desktop Switching Modules (Model

 

Numbers 3CB9LF36RL and 3CB9LF36TL) support RMON groups 1, 2,

 

3, and 9.

Web-based

If you use Netscape as your browser, you must install the Help files on

Management

an external server, not on a local PC. For instructions on how to install

 

and configure Help for the Netscape browser, see “Documentation

 

Changes” later in this chapter. (29490)

SNMP

The MIB object a3ComSysEthernetPortCount returns a value that is

 

one (1) greater than the combined number of front panel ports and

 

backplane ports.

 

Do not configure or enable SNMP trap destinations from the

 

Administration Console with the snmp trap addModify command

 

on switch fabric modules or interface modules. Only configure and

 

enable SNMP trap destinations on the EME with the

 

set trap_destination command. See “Documentation Changes” in

 

Chapter 3, “Release Issues” of the CoreBuilder 9000 Release Notes for

 

Management Modules for information about how to do this. (29770)

 

There is no SNMP support for creating or deleting trunks.

 

To prevent timeouts of SNMP requests, 3Com recommends that you

 

increase the default timeout for the network management station.

 

The value returned by ifType for backplane interfaces (117) are

 

specified as defined by the Internet Assigned Numbers Authority

 

(IANA) and not as specified in RFC 1213 or RFC 1573.

Ethernet

The 36-port 10/100BASE-TX Desktop Switching Modules (Model

 

Numbers 3CB9LF36RL and 3CB9LF36TL) are the only modules that

 

currently support PACE®. Although you can change the PaceAccess

 

setting to enable on other modules, they do not currently support

 

PACE and the setting actually remains disabled.

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Contents CoreBuilder Release Notes 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Release Issues Software Installation Page Overview Management Information Bases MIBs Requirements Boot CodeSystem Operational CodeRedundancy 3CB9LG9MCRelease Highlights IgmpManagement CoreBuilder 9000 Enterprise SwitchWeb-based Software CDISO Date and Time FormatNew Modules 10/100 Mbps Ethernet Port Monitoring QueryingSnooping 802.1p CoS Loop DetectionCoreBuilder 9000 Implementation Guide for more details Release Highlights LoopDetectMode loopDetectSrcAddress Enable 08-00-8f-75-48-86 LoopDetectStatus Bridge Address Learning LimitsAddresses Addresses are taken from the per-port address allocations Learning ModeSecure Address See the previous section Bridge Address Learning LimitsSecure Address Learning Mode Vlan Flood Rate Limiting BroadcastMulticast, Vlan as the arriving packetMulticastlimit Limiting is on a per-port basis only Release Highlights System Release IssuesCorrected Problems ManagementWhenever a non-switch fabric module is reset with VLANs StagingWeb-based System Issues Module Modules have only one backplane portModel Number 3CB9LF36RL or 3CB9LF36TL to act as an Igmp TrunkingSystem Issues Release Issues Known Problems Release Issues Known Problems Not reset after you enter the module baseline set command Administration Console of the 36-port 10/100BASE-TX FastModify command If a trunk is configured on a module, the following fieldsKnown Problems Documentation ChangesDocumentation Software Installation Chassis At the EME prompt, enterVerifying Your module for guidelines and proceduresOrder specified in the following procedure ModulesSoftware next in this chapter Power to these module slotsFollowing procedure explains how to download software ModulesShow module slot.all verbose From the EME, connect to the module You must complete to ensure that the module is updated Downgrading Switching Modules to Software Release Identifying SwitchReference Modules3CB9LG2MC MIB Files ApplicableDocuments CoreBuilder 9000 Implementation GuideReference Entering Commands UnderstandingAutonegotiation Year Compliance3Com Year 2000 Web Technical Support ServicesServices Online TechnicalAccess by Analog Modem Username anonymousModem Isdn 24 hours a day, 7 days a week Access by Digital Modem 847 262408 727 Europe Country Telephone Number North America

3CB9LF36R, 3CB9LF36TL, 3CB9LF20R, 3CB9LF36RL, 3CB9LF36T specifications

The 3Com 3CB9LF20MM, 3CB9LF10MC, 3CB9LG9MC, 3CB9LF36T, and 3CB9LF36RL are advanced networking solutions that exemplify the commitment of 3Com to delivering high-performance products for both small and large enterprises. These models feature varying specifications to accommodate different network demands while ensuring reliability and efficiency.

The 3CB9LF20MM model is designed with flexibility in mind, making it an ideal choice for small to medium-sized businesses. It supports multiple network protocols ensuring seamless integration and is equipped with enhanced security features that protect sensitive data. This model excels in environments that require high-speed connectivity and robust throughput.

Next, the 3CB9LF10MC stands out due to its compact design, making it perfect for businesses with limited space. It offers exceptional performance while maintaining low power consumption, enabling organizations to reduce their carbon footprint. This unit also includes advanced Quality of Service (QoS) features, allowing administrators to prioritize critical applications and ensure optimal network performance.

The 3CB9LG9MC is particularly noteworthy for its scalability. It is engineered to support growing network demands and can accommodate a substantial number of users without compromising performance. This model leverages cutting-edge technologies, such as advanced VLAN support and multicast routing, to facilitate efficient network management. Its robustness makes it suitable for larger enterprise environments or data-intensive applications.

The 3CB9LF36T model is designed for high capacity and speed, making it suitable for organizations that require increased bandwidth. This switch can handle heavy traffic loads effectively, ensuring smooth operation for bandwidth-intensive tasks and applications. Additionally, it comes equipped with multiple gigabit Ethernet ports, providing flexibility for various network configurations.

Lastly, the 3CB9LF36RL model features redundancy and failover capabilities, making it an excellent choice for mission-critical environments. The design emphasizes reliability, with built-in features that allow for uninterrupted service, even in the face of hardware failures. This model ensures continuous connectivity, an essential requirement for organizations where downtime can lead to significant financial loss.

In summary, the 3Com 3CB9 family of networking solutions offers a diverse array of features and technologies designed to meet varying organizational needs. From scalability and security to high capacity and reliability, these models cater to a broad spectrum of networking requirements, ensuring that businesses can maintain optimal performance in their operations.