3Com 3CB9LF20MM, 3CB9LF36RL, 3CB9LF36TL, 3CB9LG9MC, 3CB9LF20R, 3CB9LF10MC manual VLANs, Staging

Page 29

 

System Issues 29

VLANs

■ Removing the default VLAN before you create additional VLANs no

 

longer causes modules to go down after a module reset. Previously,

 

you had to move the module to another slot in the chassis to

 

reinitialize. (26223)

 

■ Previously, in some configurations, the system did not allow the proper

 

number of VLANs to be defined, causing an out-of-resources

 

message. The system now allows correct VLAN definition. (27137)

 

 

System Issues

This section describes operating considerations that apply to Layer 2

 

switching module operational software Release 3.0.

 

The numbers that appear in parentheses at the end of some descriptions

 

are for internal 3Com use only.

Staging

■ You cannot stage a module in one chassis type and then move this

 

module to another chassis type, due to variations in the backplane

 

port mapping.

System

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

 

Numbers 3CB9LF36RL and 3CB9LF36TL) are designed to switch traffic

 

among desktop workstations that are connected to wiring closets. Do

 

not connect the module’s front-panel ports to routers, switches, or

 

network hubs. You can connect a small repeater (only) if you stay

 

within the address limits of the port. (The default limit is two

 

addresses.)

 

■ When you move a module from one chassis to another, the

 

configuration of the module remains intact. (27113)

 

■ After you enter an nvdata reset command (or initiate a trunk group

 

definition or deletion), there is a delay before the module initiates the

 

reset and returns to the Administration Console.

 

■ When you first insert and initialize a Gigabit Ethernet Layer 2

 

Switching Module in a CoreBuilder 9000 chassis, the primary switch

 

fabric module in the chassis generates the trap sequence: Link Up...

 

Link Down... Link Up. This is normal.

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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 System Boot CodeRequirements Operational Code3CB9LG9MC RedundancyIgmp Release HighlightsWeb-based CoreBuilder 9000 Enterprise SwitchManagement Software CDNew Modules ISO Date and TimeFormat Snooping 10/100 Mbps Ethernet Port MonitoringQuerying CoreBuilder 9000 Implementation Guide for more details 802.1p CoSLoop Detection Release Highlights LoopDetectMode loopDetectSrcAddress Enable 08-00-8f-75-48-86 LoopDetectStatus Addresses Bridge AddressLearning Limits Secure Address Learning ModeAddresses are taken from the per-port address allocations See the previous section Bridge Address Learning LimitsSecure Address Learning Mode Vlan Multicast, BroadcastFlood Rate Limiting Vlan as the arriving packetMulticastlimit Limiting is on a per-port basis only Release Highlights Corrected Problems Release IssuesSystem ManagementWhenever a non-switch fabric module is reset with Staging VLANsWeb-based System Issues Model Number 3CB9LF36RL or 3CB9LF36TL to act as an Igmp Modules have only one backplane portModule TrunkingSystem Issues Release Issues Known Problems Release Issues Known Problems Modify command Administration Console of the 36-port 10/100BASE-TX FastNot reset after you enter the module baseline set command If a trunk is configured on a module, the following fieldsKnown Problems Documentation DocumentationChanges Software Installation At the EME prompt, enter ChassisOrder specified in the following procedure Your module for guidelines and proceduresVerifying ModulesFollowing procedure explains how to download software Power to these module slotsSoftware 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 Reference SwitchIdentifying Modules3CB9LG2MC Documents ApplicableMIB Files CoreBuilder 9000 Implementation GuideReference Autonegotiation Entering CommandsUnderstanding 3Com Year 2000 Web YearCompliance Services ServicesTechnical Support Online TechnicalModem Isdn 24 hours a day, 7 days a week Access by Analog ModemUsername anonymous 408 727 Access by Digital Modem847 262 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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