Chapter 2: C4/C4c CMTS Features
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 67
Ethernet Link Aggregation (IEEE 802.1ax)
Support for Increased Modem Transmit Power (USCB)
Dual Shared Secret
Enhanced Scaling with Upstream Channel Bonding
Integrated Service Class Agility (ISCA)
Dynamic Service Class Modifications
IPv6 PCMM Support for Voice
Automatic Card Recovery for DC Voltage
Upstream Drop Classifier (UDC) Support
Support for Modem Loss of AC Power (reduce to 1x1)
Improved Partial Services (USCB primary upstream)
Policy-Based Routing (PBR) Recursive Next Hop
Any Source Multicast (ASM) with IGMPv3 on the Cable Side
DSG Reset to Null
TACACS+ Source Interfaces
TCS Optimization for Static Upstream Bonding Groups
Voice Service Flow Load Balancing by CAC Capacity
Subscriber Management Filter Expansion
Ethernet Link Aggregation (IEEE 802.1ax) will allow eight GigE links per link aggregation group (LAG).
Support for Increased Modem Transmit Power (USCB) will implement the extended upstream transmit power CM
capability ECNs which will enable a cable modem that is bonding upstream channels to transmit at a higher power level, if
the cable modem supports that capability.
Dual Shared Secret will allow configuration of a secondary (in addition to the primary) shared secret. Authentication of the
cable modem configuration file will attempt to use the secondary shared secret if a failure occurs during registration using
the normal primary shared secret string. If a match is found using the secondary (or alternate) shared secret, the modem
will be allowed by the C4 CMTS.
Enhanced Scaling with Upstream Channel Bonding will implement measures to reduce C4 CMTS system resources
consumed by modems using multiple upstreams (MTCM) so that the per-CAM scaling of upstream-bonding modems is
increased.
Integrated Service Class Agility (ISCA) will be provided to permit a system operator to enable or disable a state machine
for each eligible upstream channel.
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