GarrettCom Address Learning Address Table Maintenance, 8000X Dual-Speed Hub Functionality

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Magnum 8000X Mixed-Media Fiber Hubs

Installation and User Guide (05/ 02)

 

 

 

1.Address Learning (Address Table Maintenance)

10Mb Domain : 10Mb packets are

 

 

 

 

100Mb Domain : 100Mb packets are

forwardedwhen the destination addresse is

 

 

 

NOTin the 10Mb domain address table.

 

 

 

forwardedwhen the destination address is

 

 

 

 

 

NOTin the 100Mb domain address table.

10Mb Domain : 10Mb packets are

10

 

BUS

100

 

filteredwhen the destination address is

 

 

 

 

 

 

 

 

 

 

in the 10Mb domain address table.

Bridge Module

 

10 Mb Domain

100 Mb Domain

 

10

BUS

100

10 Mb Traffic

 

100 Mb Traffic

 

 

 

 

 

 

 

 

 

100Mb Domain : 100Mb packets are

 

 

 

 

 

filteredwhen the destination address is

 

 

 

 

 

in the 100Mb domain address table.

The Magnum 8000X bridge module is a state machine design which has a total address table capacity of 8K addresses. With a large address table, a Magnum 8000X can serve the needs of a medium-sized to large network. Table 4.2 shows what filter / forward action the Magnum 8000X will take in each packet-processing situation, and when a new node address will be added to the internal Address Table. When a new node-address packet comes into a port for the first time, then the new source address is “learned” at the same time that the packet is forwarded. After learning, subsequent packets from the same node address are routinely processed. The address tables are flushed periodically to update the network status and to purge any inactive stations from the tables of both domains.

 

Figure 4.2 : Filtering vs. Forwarding in Dual Speed 8000X

Packet

Source

Destination

Address Table

Filter/Forward

Source

Address

Address

Maintenance

Action

10 Mbps

Not in table

Not in table

Add source to table

Forward

10 Mbps

Not in table

In table

Add source to table

Filter

10 Mbps

In table

Not in table

None

Forward

10 Mbps

In table

In table

None

Filter

100Mbps

Not in table

Not in table

Add source to table

Forward

100Mbps

Not in table

In table

Add source to table

Filter

100Mbps

In table

Not in table

None

Forward

100Mbps

In table

In table

None

Filter

 

Table 4.2: 8000X Dual-Speed Hub Functionality

2.Throughput Increase

By selectively forwarding packets from each domain to the other domain based on its switching (bridging) logic, the Magnum 8000X increases the available bandwidth for the users on both sides of the network. As shown in Figure 4.2, it keeps the local traffic on each side contained, preventing unnecessary packets and bad packets from traveling to the other domain and using up bandwidth needlessly over there. This

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Contents Mixed-Media Fiber Hubs Trademarks Magnum Mixed-Media Fiber Hubs Installation and User GuideContacting GarrettCom, Inc GarrettCom, IncPersonal Switches , 10/100Mb Personal Hubs, 10Mb seriesMedia Converters, 10Mb and 100Mb series Introduction Magnum 8000X MIXED-MEDIA Fiber HUB Roubleshooting Revisions Power Supply, AC Internal Technical SpecificationsNetwork Standards Maximum Ethernet Segment or Domain LengthsManual Switches DC Power Supply OptionsLED Indicators WarrantyPM Model # Ieee Standard Speed Connector type Specifications Switching Port Modules SPMs for bonus portSwitch Port Modules SPMs for the Bonus Port Magnum 8000X Mixed-Media Fiber Hubs8000X Front Port Modules PMs Magnum 8000X Mixed-Media Fiber Hubs Product Description General InformationA Magnum 8000X, Front View Magnum 8000X Fiber Hub ChassisPort Modules PMs C Magnum 8000X Rear Panel ViewFPM-MSC, FPM-MST, FPM-MV45, FPM-SXMST, & PM-FP Switch Port Modules SPMsFiltering and Forwarding / Address Learning 5a Inside view of Magnum 8000X with SPM installed. Rear viewSeg Not in table Add source to table Forward Filter None Magnum SPM-FDST Magnum SPM-FDSSC Magnum SPM-FDSCMagnum SPM-TTX SPM Specification Summary TableStacking Magnum Mixed-Media 8000X Fiber Hubs 10 /100 Speed Auto-sensing 8000X front copper ports only7a a stack of one Magnum 8000X and two DS-8016-A’s Internal view of 8000X with bridge module installed LEDs for Chassis and PM Cards Stackable and Scaleable ConfigurationsApplications Magnum 8000X has 16 ports per unit Magnum 8000X Installation Connecting Ethernet MediaLocating the Magnum Connecting Fiber Optic ST-type, twist-lock Connecting Fiber Optic SC-type, Snap-InCopper Media Ieee Standard Connecting Single-Mode Fiber OpticBit Time per Meter BT/m Magnum 8000X Mixed-Media Fiber Hubs 1b Multiple cascaded Magnum 8000X Mixed-Media hubs PDV = X + 100 + 80 + 80 +Length m Max. User Max. Inter HubsConnections to NICs which support Auto-Negotiation Table-Top or Shelf MountingStop Preparation for Installing and Removing PMs1a Removing Chassis Cover Remove Chassis CoverInstalling PM Cards in the Magnum Connector socketSlot. Align Removing PM Cards 2b Inserting PM Cards into a MagnumPM Cards 10a Removing Chassis Cover 10.1a Top View SPM Module Installed in a Installing an SPM Module in the MagnumRemoving an SPM Bonus Port Module Powering the MagnumRemove retaining screws for the SPM, face-plate only Remove SPM CardMagnum 8000X Mixed-Media Fiber Hubs Operation Repeater FunctionalityDual-Speed Functionality Address Learning Address Table Maintenance 8000X Dual-Speed Hub FunctionalityThroughput Increase Auto-negotiation and speed-sensing Software TransparencyAuto-negotiation per-port for dual-speed hubs occurs when Chassis LEDs’cvr Power Budget Calculations for 8000X FPM’s and Fiber MediaIntroduction Magnum 8000X Port Modules FPM-MSC 100Mbps multi-mode FX-SC-type, snap-in connector FPM-MST, 100Mbps multi-mode FX-ST-type, twist-lock connectorActivity 2 Link FPM-SSC 100Mbps single-mode FX-SC-type, snap-in connectorConnector 100BASE-FX MT-RJActivity Link SX short wavelength FPM-SXMST and Sxmsc 100BASE-SX when availablePM-RJ45 and RJ45U Twisted Pair Must be installed PM-FPEach empty PM slot Before Calling for Assistance TroubleshootingReturn Material Authorization RMA Procedure When Calling for AssistanceShipping and Packaging Information No Problem FoundB3.0 Applications for DC Powered Ethernet Hubs Specifications for Magnum Mixed -MEDIA 8000X HubsB4.1 UL Requirements B4.0 InstallationOperation B5.0B6.0 Ordering Information B7.0C4.0 Features and Benefits of the DUAL-SOURCE Design C5.0 InstallationC3.0 DUAL-SOURCE OPTION, Theory of Operation C5.1 UL Requirements C6.0 Ordering InformationExample Magnum 8000X-48VDC C7.0

8000X specifications

The GarrettCom 8000X series represents a significant advancement in industrial networking technology, designed specifically for demanding environments that require robust and reliable communication solutions. Known for its versatility and resilience, the 8000X series caters to various industries, including transportation, utilities, and automation, making it a go-to choice for mission-critical applications.

One of the main features of the 8000X is its modular design, allowing users to customize the switch according to their specific networking needs. This feature provides the flexibility to add and remove modules seamlessly, ensuring that the network can adapt as requirements change over time. The modularity also contributes to easier maintenance and upgrades, reducing downtime and enhancing operational efficiency.

The 8000X series is built to operate in harsh environments, with an operating temperature range of -40°C to 85°C, making it suitable for outdoor and industrial applications. Its rugged chassis is designed to withstand vibration and shock, ensuring reliability even in the most challenging conditions.

Equipped with both Ethernet and fiber optic ports, the 8000X series supports a variety of network topologies and facilitates extensive connectivity options. It usually offers multiple gigabit Ethernet ports, allowing for high-speed data transmission. This feature is crucial for applications that demand real-time data processing, such as video surveillance and process control systems.

In terms of security, the GarrettCom 8000X series incorporates advanced features such as VLAN support, access control lists (ACLs), and network monitoring tools. These security measures are essential for protecting sensitive data and maintaining network integrity against potential threats.

The device also supports various network protocols, including IPv4, IPv6, and various industrial protocols such as Modbus. This compatibility ensures that the 8000X can seamlessly integrate into existing infrastructures and communicate effectively with other devices and systems.

Furthermore, the GarrettCom 8000X series is equipped with built-in redundancy features, such as dual power supplies and support for Rapid Spanning Tree Protocol (RSTP), which enhance network reliability and minimize the risk of downtime.

Overall, the GarrettCom 8000X series stands out with its robust construction, modularity, and advanced technology, making it an ideal solution for organizations seeking reliable networking equipment capable of performing under extreme conditions. Its features make it a vital asset for industries focused on maintaining high-performance communication standards.