MoCA Installation and
Troubleshooting Reference Guide
Overview
Introduction
This document contains installation guidelines, performance verification steps,
and troubleshooting measures for devices that support a multi-room network
over Multimedia over Coax Alliance (MoCA
devices (non-DVR set-tops) to stream content from a server device (DVR set-top)
that has recorded linear content.
Features
Support is provided for the following features on each MoCA device:
Standard Definition (SD) and High Definition (HD) content
Between two nodes, a streaming rate of greater than 250 Mbps (PHY rate)
Trick modes (FF, REW, SLO-MO, and PAUSE)
Up to three clients per server
MoCA Devices
The information in this guide applies to the following MoCA devices:
DVRs
9865HDC set-tops
8742HDC and 8642HDC set-tops
Non-DVRs
4742HDC and 4642HDC set-tops
1642HDC set-tops
Purpose
After reading this document, you will understand where to install the MoCA POE
(Point of Entry) filter and MoCA set-tops with respect to cable splitters and
amplifiers. You will also be able to verify links between MoCA set-tops and
troubleshoot faulty installations.
). Multi-room networks allow client
®
Related Manuals for Cisco 4742HDC
Summary of Contents for Cisco 4742HDC
- Page 1 DVRs 9865HDC set-tops 8742HDC and 8642HDC set-tops Non-DVRs 4742HDC and 4642HDC set-tops 1642HDC set-tops Purpose After reading this document, you will understand where to install the MoCA POE (Point of Entry) filter and MoCA set-tops with respect to cable splitters and amplifiers.
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Page 2: Table Of Contents
Installation Basics Scope This document does not address MoCA-compliant cable modem gateways. This document only addresses standalone DOCSIS 2.0 and DOCSIS 3.0 cable modems that are not MoCA compliant. Audience This document is intended for field technicians. Audience This document is intended for field technicians. Document Version This is the third formal release of this document. -
Page 3: Installation Basics
Once a set-top has joined the network, its MoCA link indicator* illuminates (see the front-panel call-outs in the set-top guides listed below): Cisco Explorer 9800 Hybrid Video Gateway Series (part number OL-26440-01) for the 9865HDC set-tops Cisco Explorer 8640HD, 8642HD, 8650HD, and 8652HD High-Definition DVR Set- ... -
Page 4: Home Wiring Examples
Home Wiring Examples Home Wiring Examples The diagrams in this section show home wiring examples that typically provide good MoCA performance. Note: As in each of these diagrams, the POE filter should always be installed before the first split. Basic Installation With Cable Modem (Example A) TP-00116-01... - Page 5 Home Wiring Examples With Cable Modem (Example B) With Home Amplifier Important: Home amplifiers can cause MoCA problems. You should use a MoCA- compliant amplifier when an amplifier is required. (A MoCA-compliant amplifier has an internal POE filter, as shown in the diagram.) TP-00116-01...
- Page 6 Home Wiring Examples With Long Cable Runs Note: The POE filter should be as close to the coaxial distribution point as possible. TP-00116-01...
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Page 7: Performance Verification
Performance Verification Performance Verification MoCA performance is verified by viewing the set-top diagnostic screens. To enter diagnostic mode, follow one of the following procedures based on the set-top you are using. For 87xx, 86xx 46xx, and 16xx Set-Tops Press and hold the set-top power button until the power indicator flashes. Release the power button. - Page 8 Performance Verification Node Summary and Network Summary To view Node Summary and Network Summary statistics, scroll to the first MoCA diagnostics page, DRIVERS - MoCA SUMMARY PG 1. Then verify the desired field values as shown in the table. Field Name Description Possible Values Enable...
- Page 9 Performance Verification Field Name Description Possible Values RF Channel Channel center frequency of Value: 1150 the MoCA network (in MHz) The RF channel frequency is typically 1150 MHz. If it is not, record the frequency for comparison with other devices on the network.
- Page 10 Performance Verification Field Name Description Possible Values TX Unicast Transmit rate from the local [Integer > 0] PHY Rate node* to each other node in the Note: Minimum value is 200 Mbps, (Mbps) network. lower rates require fixing the home coaxial wiring.
- Page 11 Performance Verification Interface Info To verify that the MoCA IF IP and MoCA IF mask have been assigned, scroll to DRIVERS - MoCA SUMMARY PG 3. Then verify the desired field values as shown in the table. Field Name Description Possible Values MoCA IF IP IP address acquired using HHCP...
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Page 12: Preventing Interference With Cable Modems
Preventing Interference with Cable Modems Preventing Interference with Cable Modems Some cable modems can be affected by the MoCA signal. If interference is suspected, attach a POE filter to the F-connector of the cable modem. This attenuates the MoCA signal at the cable modem. TP-00116-01... -
Page 13: Installation Problems
Installation Problems Installation Problems There are several home wiring configurations that can cause a low PHY rate (physical layer bit rate) and other problems. The most common of these configurations and possible solutions are discussed in the following sections. MoCA Path Through Amplifier Problem In the diagram below, MoCA Device 1 is connected off the initial split to the cable modem, while the other MoCA devices are connected after a home amplifier. - Page 14 Installation Problems Solution A solution is to re-route the cable wiring so that MoCA Device 1 is connected to the output of the home amplifier. In addition to keeping all MoCA devices on the output side of the amplifier, you should use a MoCA-compliant amplifier when an amplifier is required.
- Page 15 Installation Problems Multi-Dwelling Problem The diagram below shows an apartment wiring closet with multiple apartments fed by the same 8-way splitter. The 8-way splitter prevents installing the MoCA POE filter to isolate apartments. TP-00116-01...
- Page 16 Installation Problems Solution The solution shown in the diagram below implements the same number of splits in such a way as to allow for installation of the MoCA POE filter. With this solution, each MoCA network is confined to its associated apartment. TP-00116-01...
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Page 17: Troubleshooting
Troubleshooting Troubleshooting This section contains troubleshooting measures for link loss, high path loss, and low PHY rates. No Link If there is no MoCA link, check the following: On MoCA SUMMARY PG 1 (see Node Summary and Network Summary (on page 8)): Verify that Enable is True. - Page 18 Troubleshooting Low PHY Rates If the PHY rate is low, check the following: Make sure to wait at least 30 seconds after link is achieved to check the PHY rate. Check the path loss shown on MoCA SUMMARY PG 2B (see Node Statistics (on page 9)).
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Page 19: Appendix A
Appendix A Appendix A The following tables describe all of the fields and possible values that can appear on the TV when you are reviewing MoCA diagnostic screens. They can be useful for troubleshooting MoCA issues. DRIVERS - MoCA SUMMARY PG 1 Field Name Description Possible Values... - Page 20 Appendix A Field Name Description Possible Values LP Checksum Link Privacy Checksum value [Integer > 0] Important: For two or more devices to form a MoCA network, their LP checksums must match, when Link Privacy is enabled. Number of Number nodes present on the [Integer ≥...
- Page 21 Appendix A DRIVERS - MoCA SUMMARY PG 3 Field Name Description Possible Values MoCA IF IP IP address acquired using DHCP [Network-dependent] or IPv4 Link-Local Protocol Note: After Link Up, the DHCT automatically acquires an IP address from a DHCP server in a MoCA device.
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Page 22: Appendix B
Appendix B Appendix B This appendix has information on MoCA signal attenuation characteristics and link quality. MoCA PHY Rate vs. Receiver Sensitivity The MoCA transmitter adjusts its bit rate automatically, depending on channel quality, to maintain a low bit error rate (BER) at the MoCA receiver. For that reason, the PHY rate is a measure of link quality. - Page 24 Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1009R) Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers.