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This article provides a solution to an issue where virtual machines lose network connectivity when you use Broadcom NetXtreme 1-gigabit network adapters.

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Original product version: Windows Server 2012 R2
Original KB number: 2986895

Symptoms

When you have Hyper-V running on Microsoft Windows Server 2012 or Windows Server 2012 R2 together with Broadcom NetXtreme 1-gigabit network adapters (but not NetXtreme II network adapters), you may notice one or more of the following symptoms:

• Virtual machines may randomly lose network connectivity. The network adapter seems to be working in the virtual machine. However, you cannot ping or access network resources from the virtual machine. Restarting the virtual machine does not resolve the issue.

• You cannot ping or connect to a virtual machine from a remote computer. These symptoms may occur on some or all virtual machines on the server that is running Hyper-V. Restarting the server immediately resolves network connectivity to all the virtual machines.

Cause

This is a known issue with Broadcom NetXtreme 1-gigabit network adapters that use the b57nd60a.sys driver, when VMQ is enabled on the network adapter. (By default, VMQ is enabled by the Broadcom network driver.)

Broadcom designates these network adapters as 57xx based chipsets. They include 5714, 5715, 5717, 5718, 5719, 5720, 5721, 5722, 5723, and 5780.

These network adapters are also sold under different model numbers by some server OEMs. HP sells these drivers under model numbers NC1xx, NC3xx, and NC7xx. You may be using driver version 16.2, 16.4, or 16.6, depending on which OEM version you are using or whether you are using the Broadcom driver version.

Resolution

This issue is resolved in Broadcom driver b57nd60a.sys version 16.8 and newer. In March 2015, Broadcom published driver version 17.0 for download. In April 2015, HP published version 16.8 of the driver for their affected network adapters, contact your server OEM if you need a driver that is specific to your server.

If you are unable to update your network adapter driver to resolve the issue, you can work around the issue by disabling VMQ on each affected Broadcom network adapter by using the Set-NetAdapterVmq Windows PowerShell command. For example, if you have a dual-port network adapter, and if the ports are named NIC 1 and NIC 2 in Windows, you would disable VMQ on each adapter by using the following commands:

You can confirm that VMQ is disabled on the correct network adapters by using the Get-NetAdapterVmq Windows PowerShell command.

Note

By default, VMQ is disabled on the Hyper-V virtual switch for virtual machines that are using 1-gigabit network adapters. VMQ is enabled on a Hyper-V virtual switch only when the system is using 10-gigabit or faster network adapters. This means that by disabling VMQ on the Broadcom network adapter, you aren't losing network performance or any other benefits because this is the default. However, you need to do this to work around the driver issue.

Get-NetAdapterVmqQueue shows the virtual machine queues (VMQs) that are allocated on network adapters. You will not see any virtual machine queues that are allocated to 1-gigabit network adapters by default.

LONDON--(BUSINESS WIRE)--Technavio has been monitoring the set-top box market and it is poised to grow by USD 4.19 bn during 2020-2024, progressing at a CAGR of over 3% during the forecast period. The report offers an up-to-date analysis regarding the current market scenario, latest trends and drivers, and the overall market environment.

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Frequently Asked Questions:

• What are the major trends in the market?
  Integration of new technologies into set-top boxes is a major trend driving the growth of the market.
• At what rate is the market projected to grow?
  The year-over-year growth for 2020 is estimated at 2.97% and the incremental growth of the market is anticipated to be $ 4.19 bn.
• Who are the top players in the market?
  ABOX42 GmbH, Advanced Digital Broadcast SA, Broadcom Inc., CommScope Inc., DISH Network LLC, Huawei Technologies Co. Ltd, MyBox Technologies Pvt. Ltd., Roku Inc., Samsung Electronics Co. Ltd., and Technicolor SA., are some of the major market participants.
• What is the key market driver?
  The integration of voice control into set-top boxes is one of the major factors driving the market.
• How big is the APAC market?
  The APAC region will contribute 52% of the market share.

The market is fragmented, and the degree of fragmentation will accelerate during the forecast period. ABOX42 GmbH, Advanced Digital Broadcast SA, Broadcom Inc., CommScope Inc., DISH Network LLC, Huawei Technologies Co. Ltd, MyBox Technologies Pvt. Ltd., Roku Inc., Samsung Electronics Co. Ltd., and Technicolor SA. are some of the major market participants. The integration of voice control into set-top boxes will offer immense growth opportunities. To make most of the opportunities, market vendors should focus more on the growth prospects in the fast-growing segments, while maintaining their positions in the slow-growing segments.

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Set-top Box Market 2020-2024: Segmentation

Set-top Box Market is segmented as below:

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• Type
  • Satellite Set-top Box
  • DTT Set-top Box
  • IPTV Set-top Box
  • OTT Set-top Box
  • Cable Set-top Box
• Geographic Landscape
  • APAC
  • Europe
  • MEA
  • North America
  • South America

To learn more about the global trends impacting the future of market research, download a free sample: https://www.technavio.com/talk-to-us?report=IRTNTR40856

Set-top Box Market 2020-2024: Scope

Technavio presents a detailed picture of the market by the way of study, synthesis, and summation of data from multiple sources. The set-top box market report covers the following areas:

• Set-top Box Market Size
• Set-top Box Market Trends
• Set-top Box Market Industry Analysis

This study identifies the integration of new technologies into set-top boxes as one of the prime reasons driving the set-top box market growth during the next few years.

Technavio suggests three forecast scenarios (optimistic, probable, and pessimistic) considering the impact of COVID-19. Technavio’s in-depth research has direct and indirect COVID-19 impacted market research reports.

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Set-top Box Market 2020-2024: Key Highlights

• CAGR of the market during the forecast period 2020-2024
• Detailed information on factors that will assist set-top box market growth during the next five years
• Estimation of the set-top box market size and its contribution to the parent market
• Predictions on upcoming trends and changes in consumer behavior
• The growth of the set-top box market
• Analysis of the market’s competitive landscape and detailed information on vendors
• Comprehensive details of factors that will challenge the growth of set-top box market vendors

Table of Contents:

PART 01: EXECUTIVE SUMMARY

PART 02: SCOPE OF THE REPORT

• Preface
• Currency conversion rates for US$

PART 03: MARKET LANDSCAPE

• Market ecosystem
• Market characteristics
• Value chain analysis
• Market segmentation analysis

PART 04: MARKET SIZING

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• Market definition
• Market sizing 2019
• Market outlook
• Market size and forecast 2019-2024

PART 05: FIVE FORCES ANALYSIS

• Bargaining power of buyers
• Bargaining power of suppliers
• Threat of new entrants
• Threat of substitutes
• Threat of rivalry
• Market condition

PART 06: MARKET SEGMENTATION BY TYPE

• Market segmentation by type
• Comparison by type
• Satellite set-top box - Market size and forecast 2019-2024
• DTT set-top box - Market size and forecast 2019-2024
• IPTV set-top box - Market size and forecast 2019-2024
• OTT set-top box - Market size and forecast 2019-2024
• Cable set-top box - Market size and forecast 2019-2024
• Market opportunity by type

PART 07: CUSTOMER LANDSCAPE

PART 08: GEOGRAPHIC LANDSCAPE

• Geographic segmentation
• Geographic comparison
• APAC - Market size and forecast 2019-2024
• Europe - Market size and forecast 2019-2024
• North America - Market size and forecast 2019-2024
• South America - Market size and forecast 2019-2024
• MEA - Market size and forecast 2019-2024
• Key leading countries
• Market opportunity

PART 09: MARKET SEGMENTATION BY RESOLUTION

• Market segmentation by resolution
• Comparison by resolution
• HD set-top box - Market size and forecast 2019-2024
• SD set-top box - Market size and forecast 2019-2024
• 4K set-top box - Market size and forecast 2019-2024
• Market opportunity by resolution

PART 10: DECISION FRAMEWORK

PART 11: DRIVERS AND CHALLENGES

• Market drivers
• Market challenges

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PART 12: MARKET TRENDS

• Integration of new technologies into set-top boxes
• Declining prices of DRAM chips
• Increasing number of households with access to TV

PART 13: VENDOR LANDSCAPE

• Overview
• Landscape disruption
• Competitive scenario

PART 14: VENDOR ANALYSIS

• Vendors covered
• Vendor classification
• Market positioning of vendors
• ABOX42 GmbH
• Advanced Digital Broadcast SA
• Broadcom Inc.
• CommScope Inc.
• DISH Network LLC
• Huawei Technologies Co. Ltd
• MyBox Technologies Pvt. Ltd.
• Roku Inc.
• Samsung Electronics Co. Ltd.
• Technicolor SA

PART 15: APPENDIX

• Research methodology
• List of abbreviations
• Definition of market positioning of vendors

PART 16: EXPLORE TECHNAVIO

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About Us

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Technavio is a leading global technology research and advisory company. Their research and analysis focuses on emerging market trends and provides actionable insights to help businesses identify market opportunities and develop effective strategies to optimize their market positions. With over 500 specialized analysts, Technavio’s report library consists of more than 17,000 reports and counting, covering 800 technologies, spanning across 50 countries. Their client base consists of enterprises of all sizes, including more than 100 Fortune 500 companies. This growing client base relies on Technavio’s comprehensive coverage, extensive research, and actionable market insights to identify opportunities in existing and potential markets and assess their competitive positions within changing market scenarios.