3Com 3CB9LG9MC, 3CB9LF36RL, 3CB9LF36TL, 3CB9LF20MM, 3CB9LF20R, 3CB9LF10MC manual Release Issues

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36CHAPTER 3: RELEASE ISSUES

■The following requests return incorrect or incomplete values for the

9-port 1000BASE-SX Gigabit Ethernet Layer 2 Switching Module:

■The value of entPhysicalClass that is returned for the instance of the module itself (entPhysicalClass.4) is 13. The value should be 9, which represents the value for the module.

■The value of entPhysicalVendorType that is returned for the instance of the module itself (entPhysicalVendorType.4) contains an incorrect cb9000 description.

■The value of entPhysicalDescr that is returned for the module does not contain slot, subslot, and revision numbers as it should.

■The 9-port 1000BASE-SX Gigabit Ethernet Layer 2 Switching Module returns values for entPhysicalIndex and entLogicalIndex, but these objects are listed in the MIB as non-accessible objects.

■The following objects are not returned:

■a3ComSysBridgePortTransmitBlockedDiscards

■a3ComSysBridgePortReceiveAllPathFilteredFrames

■a3ComSysBridgePortTransmitAllPathFilteredFrames

■a3ComSysBridgePortReceiveMulticastPathFilteredFrames

■a3ComSysBridgePortTransmitMulticastPathFilteredFrames

■The module agent does not return the ipNetToMediaPhysAddress MIB-II to the ipNetToMediaTable. Other objects in the ipNetToMediaTable are properly returned.

■If you reset the 9-port1000BASE-SX Gigabit Ethernet Layer 2 Switching Module from the EME, you see MIB II Cold Start and Link Up traps from the module, but you do not see a Link Down trap. The normal Link Up... Link Down... Link Up sequence has probably occurred and the module has reset, even though you did not see a Link Down trap.

■The object cb9000BackplaneConnectIfIndex lists backplane port numbers in decreasing order for the 9-port 1000BASE-SX Gigabit Ethernet Layer 2 Switching Module. For other CoreBuilder 9000 modules, the backplane port numbers are listed in increasing order.

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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 Boot Code SystemRequirements Operational CodeRedundancy 3CB9LG9MCRelease Highlights IgmpCoreBuilder 9000 Enterprise Switch Web-basedManagement 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 Learning Mode Secure AddressAddresses are taken from the per-port address allocations See the previous section Bridge Address Learning LimitsSecure Address Learning Mode Vlan Broadcast Multicast,Flood Rate Limiting Vlan as the arriving packetMulticastlimit Limiting is on a per-port basis only Release Highlights Release Issues Corrected ProblemsSystem ManagementWhenever a non-switch fabric module is reset with VLANs StagingWeb-based System Issues Modules have only one backplane port Model Number 3CB9LF36RL or 3CB9LF36TL to act as an IgmpModule TrunkingSystem Issues Release Issues Known Problems Release Issues Known Problems Administration Console of the 36-port 10/100BASE-TX Fast Modify commandNot reset after you enter the module baseline set command If a trunk is configured on a module, the following fieldsKnown Problems Documentation ChangesDocumentation Software Installation Chassis At the EME prompt, enterYour module for guidelines and procedures Order specified in the following procedureVerifying ModulesPower to these module slots Following procedure explains how to download softwareSoftware next in this chapter 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 Switch ReferenceIdentifying Modules3CB9LG2MC Applicable DocumentsMIB Files CoreBuilder 9000 Implementation GuideReference Entering Commands UnderstandingAutonegotiation Year Compliance3Com Year 2000 Web Services ServicesTechnical Support 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.
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