GarrettCom 84-00136 manual Frame Buffering and Flow Control

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Magnum 6K16-Series Managed Fiber Switch Installation and User Guide (04/06)

standard and fulfills its role in support of QOS, giving packet processing priority to priority tagged packets according to the 802.1p standard. In addition to hardware support for QOS, the MNS software (R2) supports two priority queues that can be shared across the eight levels of defined packet priorities for application-specific priority control by the user through software configuration settings.

2.2.9Frame Buffering and Flow Control

Magnum 6K16-Series’s are store-and-forward switches. Each frame (or

packet) is loaded into the Switch’s memory and inspected before forwarding can occur. This technique ensures that all forwarded frames are of a valid length and have the correct CRC, i.e., are good packets. This eliminates the propagation of bad packets, enabling all of the available bandwidth to be used for valid information.

While other switching technologies (such as "cut-through" or "express") impose minimal frame latency, they will also permit bad frames to propagate out to the Ethernet segments connected. The "cut-through" technique permits collision fragment frames (which are a result of late collisions) to be forwarded which add to the network traffic. Since there is no way to filter frames with a bad CRC (the entire frame must be present in order for CRC to be calculated), the result of indiscriminate cut- through forwarding is greater traffic congestion, especially at peak activity. Since collisions and bad packets are more likely when traffic is heavy, the result of store-and- forward operation is that more bandwidth is available for good packets when the traffic load is greatest.

When the Magnum 6K16-Series Switch detects that its free buffer queue space is low, the Switch sends industry standard (full-duplex only) PAUSE packets out to the devices sending packets to cause “flow control”. This tells the sending devices to temporarily stop sending traffic, which allows a traffic catch-up to occur without dropping packets. Then, normal packet buffering and processing resumes. This flow- control sequence occurs in a small fraction of a second and is transparent to an observer.

Another feature implemented in Magnum 6K16-Series Switches is a collision-based flow-control mechanism (when operating at half-duplex only). When the Switch detects that its free buffer queue space is low, the Switch prevents more frames from entering by forcing a collision signal on all receiving half-duplex ports in order to stop incoming traffic.

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Contents Managed Fiber Switch Trademarks Contacting GarrettCom, Inc Canadian EmissionIntroduction Table of ContentsInstallation Intro Magnum 6K16/6K16V Managed Fiber Switch Port Modules45 OperationWww . GarrettCom . com Overview TRANSCEIVERS, 10MB Series MINI-TRANSCEIVERS and Coax Models Media CONVERTERS, 10MB and 100MB SeriesBridge Port Modules BPMS, 4 TYPES, for Segment Network Standards and Compliance, hardware Technical SpecificationsPerformance Maximum 10 Mbps Ethernet Segment LengthsManagement Console connector Fiber Single-mode connector typesAlarm Relay Contacts Power Supply InternalAgency Approvals and Standard Compliance Magnum 6K16V Per-port MDI or Mdix on RJ-45Mountings Magnum 6K16Ordering Information 6KP8-SLC 6KP8-MTRJ6KP8-MLC 6KP4-FXSCWww . GarrettCom . com 6K PoE Modules with 48VDC Pass-Through Introduction Inspecting the Package and Product Product Description Magnum 6K16-Series 6K16/6K16V 1a Magnum 6K16V, Managed Fiber Switch 1b Magnum 6K16, Managed Carrier Class Switch 1c Magnum 6K16-Series family 6K16 and 6K16V, At a glance Set-up of the software See Magnum 6K-MNS Software Manual for Flexibility to adapt to any FDX orEight-Port Copper Module, 6K8-RJ45 Per the IEEE802.3af PoE Port modules are also available with Four-Port 10 Mb and 100Mb mm Fiber ST ModulesMagnum Combo six @ Mtrj 100Mb mm SFF fiberGigabit 1000Mbps port modules Packet Prioritization, 802.1p QOSFrame Buffering and Flow Control Managed Network Software MNS-6K for Magnum 6K8-Series GarrettCom proprietary MIBs for Snmp„ Features Fiber-Built-In Features and Benefits„ Managed switching for high performance Ethernet LANs Applications Magnum 6K25 Snmp Backup Locating Magnum 6K16-Series Switches Connecting Ethernet MediaConnecting Single-Mode Fiber Optic Connecting Fiber Optic ST-type, twist-lockConnecting Fiber Optic SC-type, Snap-In Ieee Standard Media Type Max. Distance Port Module FiberMedia Ieee Standard Connecting Gigabit Media Using GBICs DIN-Rail Mounting Magnum 6K16VWww . GarrettCom . com Mounting Dimensions for 6K16Vwith metal brackets 2a- One Magnum 6K16 deployed over a K16-2Tray Powering the Magnum 6K16-Series Managed Fiber Switch Relay Contacts6K16-Series Port Module 6KPM Installation Preparation for Installing and Removing 6KPMsRemove Chassis Cover 1a Removing the Front panel from the unitInstalling 6KPM Cards in the Magnum 6K16-Series Remove front panel face plate retaining screwsUplink Switch 2f Securely latching up 6KPM Cards into a Magnum 6K16-Series Removing 6KPM Cards 3b Removing a 6KPM CardEnlarged view of Magnum 6K16-Series Console Port area DB-9 Console port connector1 RS-232 DB-9 Console Com port Serial port pin assignments Address Learning Switching FunctionalityFiltering and Forwarding Auto-CrossMDIX and Auto-negotiation, for RJ-45 ports Up-link Manual Switches set as = , for RJ-45 port onlyStatus LEDs PWRWww . GarrettCom . com Flow-control, Ieee 802.3x standard 6KP4V ’cvr6KPM Module Description Dual speed copper ports. Segments. When installed in aSwitch, the copper port Magnum 6K16-Series Managed1b 6KP4-F10ST, 4@10Mb multi-mode FX-ST twist lock Module Transceivers all in one module. This Mode 100Mbps fiber opticMagnum 6KP6 Activity ACT, Link LK,Www . GarrettCom . com Link Port@ 100Mbps Multi-Mode Fiber portActivity FULL/HALF Module is a combo module with Mtrj type ports. The small size Mtrj connectors provides anMagnum 6KP8-45MT Copper and fiber Small Form Factor9 6KP8-RJ45 Twisted Pair, 10/100Mb 8-Port Fig. the top 8-RJ45 PoE LEDs SummaryMagnum 6KP8 GBIC-SXSC Gigabit fiber1000Mb, multi-mode SC Connector 13a GBIC-LXSC Gigabit fiber 1000Mb, multi-mode SC Connector14 6KM-BLNK @ 1000Mb Fiber SC + 2@ 100Mb SCBefore Calling for Assistance When Calling for Assistance Return Material Authorization RMA ProcedureShipping and Packaging Information Appendix B Internal DC Power Supply OptionsNo Problem Found B2.0 -48VDC, 24VDC and 125VDC POWER, Theory of Operation B3.0 Applications for DC Powered Ethernet Switches B4.0 6K16-SERIES, -48V, 24, 125 or 5VDC InstallationB5.0 Operation B7.0 TroubleshootingC1.0 Specifications for Magnum 6K16-SERIES Fiber Switch B6.0 Ordering InformationC4.0 Features and Benefits of the DUAL-SOURCE Design GNDC5.0 Installation Example Magnum 6K16-SeriesR-48VDC C5.1 UL RequirementsC6.0 Ordering Information C7.0 Operation

84-00136 specifications

GarrettCom 84-00136 is a robust and reliable networking solution widely recognized for its versatility and performance in demanding environments. Specifically designed for industrial applications, the device excels in offering connectivity within harsh conditions, ensuring seamless communication across various network topologies.

One of the standout features of the GarrettCom 84-00136 is its high port density. With multiple Ethernet ports, it allows for extensive network connections, making it an ideal choice for facilities that require numerous devices to be interlinked. This capability ensures that organizations can efficiently manage their communication needs without compromising on performance.

Another significant characteristic of the 84-00136 is its industrial-grade durability. Built to withstand extreme temperatures, vibrations, and shocks, the device is suited for applications in manufacturing plants, transportation systems, and utility networks. This level of resilience is essential for maintaining reliable operations in environments where standard networking equipment might fail.

The technology behind the GarrettCom 84-00136 includes advanced switching capabilities. With support for both managed and unmanaged configurations, users can choose the level of control and customization that best fits their network requirements. The managed features allow for extensive monitoring and management, facilitating better network performance and security.

In addition, the 84-00136 supports various communication protocols, improving interoperability with existing systems. This flexibility is crucial for organizations looking to integrate new technologies into their established networks without overhauling the entire system.

Security is another critical aspect of the GarrettCom 84-00136. The device is equipped with robust security features, ensuring that network data remains protected from unauthorized access. This is particularly important in industrial environments where sensitive information must be safeguarded against potential cyber threats.

Ease of installation and maintenance is also a highlight of the GarrettCom 84-00136. Its user-friendly design allows for straightforward setup, minimizing downtime during deployment. Furthermore, ongoing maintenance is simplified through an intuitive interface, enabling quick troubleshooting and adjustments.

In summary, the GarrettCom 84-00136 is a high-performance networking solution tailored for industrial applications. Its impressive features, including high port density, industrial-grade durability, advanced switching capabilities, and robust security measures, make it an optimal choice for organizations seeking reliable and efficient network connectivity in challenging environments.
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