3Com 3CB9LF10MC, 3CB9LF36T Broadcast, Multicast, Flood Rate Limiting, Vlan as the arriving packet

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Broadcast, Multicast, and Flood Rate Limiting

23

Broadcast,

You can define rate limits for broadcast, multicast, and flood packet types

Multicast, and

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

Flood Rate Limiting

Numbers 3CB9LF36RL and 3CB9LF36TL).

 

To participate in broadcast, multicast, and flood rate limiting, a

 

front-panel port must be configured for each rate limit packet type.

 

Front-panel ports that are not configured to participate in a particular

 

module rate limit packet type are unaffected by the associated module

 

limit for that packet type.

 

Flood-rate limits on unknown packets are applied to client egress frames.

 

A packet is unknown if the module has not learned the packet’s

 

destination address. An unknown packet that enters the module through

 

a front-panel port is forwarded out through the backplane port. An

 

unknown packet that enters the module through the backplane port is

 

flooded out through all active front-panel ports assigned to the same

 

VLAN as the arriving packet.

 

You can apply rate limits to the number of unknown flood packets that

 

are forwarded from the Gigabit backplane port to the participating

 

front-panel ports. Unknown packets that arrive at a front-panel port are

 

not forwarded to other front-panel ports and are only repeated through

 

the backplane port.

Module Packet-egressEgress rate limiting is on a module-wide basis only. To set packet-egress Rate Limiting limits for the module:

1From the bridge multicast menu, select the module limit for the specific packet type.

The possible packet types are:

■multicastLimit

■broadcastLimit

■floodLimit

2Enter the packet-egress limit.

This is the maximum rate at which the module can forward the selected packet type out through the participating front-panel ports. The range of permitted values is 0 – 16,777,216 frames per second (fps). The default value is 50,000 fps.

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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 Operational Code Boot CodeSystem Requirements3CB9LG9MC RedundancyIgmp Release HighlightsSoftware CD CoreBuilder 9000 Enterprise SwitchWeb-based ManagementNew 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 See the previous section Bridge Address Learning Limits Learning ModeSecure Address Addresses are taken from the per-port address allocationsSecure Address Learning Mode Vlan Vlan as the arriving packet BroadcastMulticast, Flood Rate LimitingMulticastlimit Limiting is on a per-port basis only Release Highlights Management Release IssuesCorrected Problems SystemWhenever a non-switch fabric module is reset with Staging VLANsWeb-based System Issues Trunking Modules have only one backplane portModel Number 3CB9LF36RL or 3CB9LF36TL to act as an Igmp ModuleSystem Issues Release Issues Known Problems Release Issues Known Problems If a trunk is configured on a module, the following fields Administration Console of the 36-port 10/100BASE-TX FastModify command Not reset after you enter the module baseline set commandKnown Problems Documentation DocumentationChanges Software Installation At the EME prompt, enter ChassisModules Your module for guidelines and proceduresOrder specified in the following procedure VerifyingModules Power to these module slotsFollowing procedure explains how to download software Software next in this chapterShow 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 Modules SwitchReference Identifying3CB9LG2MC CoreBuilder 9000 Implementation Guide ApplicableDocuments MIB FilesReference Autonegotiation Entering CommandsUnderstanding 3Com Year 2000 Web YearCompliance Online Technical ServicesServices Technical SupportModem 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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