Cisco 9865HDC User Manual

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
®
). Multi-room networks allow client
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.

Cisco 9865HDC Specifications

General

Model	9865HDC
High Definition	Yes
DVR	Yes
Category	Set-top box
Connectivity	Ethernet
Network	Ethernet
Chipset	Broadcom
CPU	Dual-core
Video Output	HDMI
Audio Output	HDMI, Optical
USB	Yes
Video Decoding	H.264, MPEG-2, MPEG-4
Resolution	1080p
Power Consumption	25W

Summary

Installation Procedure Steps

Install MoCA POE Filter

Describes the installation of the 1002 MHz low-pass filter at the subscriber drop to prevent interference.

Verify MoCA Network Links

Home Wiring Examples

Basic Installation Diagram

Cable Modem Setup Example A

Home Wiring Configurations

Cable Modem Setup Example B

Home Amplifier Integration

Performance Verification

Set-Top Diagnostic Access

Procedures for accessing diagnostic screens on different set-top models for performance checks.

MoCA Network Summary

Summary Screen Field Explanations

Explains key fields in MoCA summary screens like Enable, Status, Link Privacy, and network parameters.

MoCA Node Statistics

MoCA Interface Information

IP Address and Mask Verification

Verifies MoCA interface IP address and subnet mask assignment obtained via DHCP or Link-Local Protocol.

Preventing Cable Modem Interference

POE Filter for Interference Mitigation

Using a POE filter attached to the cable modem to attenuate the MoCA signal and prevent interference.

Installation Problems: Amplifier Paths

Disallowed Amplifier Configuration

Describes a problematic MoCA configuration where devices are placed on different sides of a home amplifier.

Installation Solutions: Amplifier Paths

Correcting Amplifier Wiring

Provides a solution to re-route wiring to connect all MoCA devices on the output side of a home amplifier.

Installation Problems: Multi-Dwelling

Splitter Issue in Apartment Wiring

Describes issues with 8-way splitters in multi-dwelling units preventing POE filter installation for isolation.

Installation Solutions: Multi-Dwelling

Multi-Dwelling Wiring Fix

Troubleshooting: No MoCA Link

Diagnosing Link Failures

Steps to diagnose and resolve situations where no MoCA link is established, checking Enable, LP checksum, and RF channel.

Troubleshooting: PHY Rate and Loss

Low PHY Rate Diagnosis

Procedures for troubleshooting low PHY rates, checking path loss, amplifiers, and splitter configurations.

Appendix B: Signal Characteristics

PHY Rate vs. Receiver Sensitivity