Chapter 2: C4/C4c CMTS Features
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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SCM 3 is being introduced to improve capacity, performance, and materially extend the operation lifespan of the current
C4 CMTS. The SCM 3 will not coexist with previous versions of the SCM, SCM II, SCM II EM, or the SCM II EM (U).
PacketCable 2.0 LAES supports lawful intercept as specified int he PacketCable 2.0 LAES specification. This includes the
capability to intercept traffic specific to a particular IP address (or subnet) including the IP address or subnet of a particular
CPE behind a cable modem. Intercepts will function for both IPv4 and IPv6 addressed target devices.
Syslog Support for IUA State Changes will report IUA state changes via syslog. The C4 CMTS will indicate in the syslog each
occurrence of an IUA state change by including a timestamp and a description of the change incorporating both the
current state and the prior state. The syslog will also indicate the cable-mac and US channel where the state change took
place.
D3.0 Load Balancing of Voice Bearer Flows Enhancement provides a capability for load balancing of voice bearer traffic.
This encompasses distributing voice bearer traffic for DOCSIS 3.0 devices across available RF channels in both the
downstream and upstream. The voice traffic load balancing function will operate even if the existing downstream load
balancing of bonded modems is disabled.
Radius Authentication functionality will be implemented as part of the AAA feature.
ARP Reduction is being implemented to reduce the volume of IPv4 broadcast ARP messages and IPv6 multicast NS
messages issued by the C4 CMTS towards CMs. This will apply to both IPv4 broadcast ARP messages and IPv6 multicast NS
messages.
Release 8.1.5 -- Small Feature Release
The following is a list of the new features in the Small Feature Release 8.1.5:
32D Annex A Support
IS-IS Point-to-Point Links
IPv6 Security Enhancements
Support for Cable Modem Status for Out-of-Range
Downstream Output Power Loss- Detection and Recovery
24 Downstream Channel Bonding
Upstream-Only Cable Modem Move
Piggyback Support on RTP Flows
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