User's Manual

ARCXTEND USER MANUAL – R1.4, ISSUE 4
Copyright 2005 Arcwave, Inc. 11
Downstream Signal Attenuators
• AX3155-ECF-10: 10 dB Downstream Attenuator for attenuating the DS signal level without
affecting the US signal level
• AX3155-ECF-20: 20 dB Downstream Attenuator for attenuating the DS signal level without
affecting the US signal level.
ARCSmart
TM
2.0 Intelligent Network Management
Arcwave’s ARCSmart intelligent network management combines an embedded DOCSIS 2.0
compliant cable modem, SNMP-compliant Arcwave Enterprise MIB (management information
base), and an upgradeable processing engine with upgradeable software to support low cost
configuration, monitoring, and troubleshooting of an ARCXtend Network Hub (Hub). Specific
capabilities include:
• DOCSIS 2.0-compliant embedded cable modem (ECM)
• SNMP-compliant Arcwave Enterprise MIB
• HTTP-based User Interface
• ARCSmart firmware upgrade
DOCSIS 2.0 Compliant ECM
Each Hub includes a hardened DOCSIS 2.0-compliant cable modem (ECM) supporting in-band
communication over standard DOCSIS channels with ARCSmart. For proper operation of
ARCSmart Advanced Network Features the ECM and all cable modems served by the Hub must be
on the same downstream and upstream DOCSIS channels at all times.
The ECM firmware can be upgrading using TFTP and normal cable modem firmware upgrade
procedures.
Watchdog Timer
This embedded cable modem also includes a system watchdog timer with a peripheral bus
interface. It provides a method for resetting the host, upon expiration of the timer value, to heal
system hangs due to software bugs, power spikes, and so on. The watchdog timer period and
prescale values are programmable and are protected by dual keyed-lock state machines. Disabling
of the watchdog timer is protected by both hardware tie-offs and a triple keyed-lock state machine.
Resetting (kicking) of the watchdog timer is provided through a dual keyed-lock state machine.
SNMP-compliant Arcwave Enterprise MIB
The Arcwave Enterprise MIB is compliant with SNMP version 1, 2, and 3 and fully accessible and
manageable using third-party SNMP-based network management tools. It contains all Hub
management, performance, and configuration data. Appendix A of this manual contains a
description and element definitions for the Arcwave Enterprise MIB as implemented in the Hub. The
compilable “arcwave.mib” file is included on each product documentation CD and can also be
downloaded from the Arcwave website.