Chapter 31: Load Balancing
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Note: (1) This applies to both registration and periodic modem steering.
(2) Rule-based modem steering only moves modems within a cable-mac and within the modem's load balancing
group.
Use any of the following commands to configure rule-based modem steering:
configure cable load-balance rule x registration-steeringD2
configure cable load-balance rule x registration-steeringD3
configure cable load-balance rule x periodic-steeringD2
configure cable load-balance rule x periodic-steeringD3
Where: x is the number of the rule
Caution: Caution should be used when enabling the DOCSIS 2.0 modem steering feature at registration time (registration-
steeringD2) as some modems have issues successfully re-registering if they receive a DCC immediately following their
initial registration.
If modem steering is desired for D2.0 CMs, it is recommended to enable periodic-steeringD2 and not registration-
steeringD2 (to avoid issues with modems that have difficulty responding to a DCC immediately following their initial
registration).
If modem steering is desired for D3.0 CMs, it is recommended to enable registration-steeringD3 and not periodic-
steeringD3 (to avoid a subsequent reset of a bonded modem since they must be DCC’ed with the reinit-mac technique).
If the configuration is such that the modem steering flags are set to enable steering on D2.0 devices but set to disable D3.0
modem steering, then the following applies:
D3.0 cable modems (CMs) are load balanced across the set of available TDMA, T-A, ATDMA and SCDMA channels.
D2.0 CMs are steered to ATDMA or SCDMA channels.
D2.0 CMs are load balanced across the set of available ATDMA or SCDMA channels.
D1.1 and D1.0 modems are load balanced across the set of available TDMA and T-A channels.
If the modem steering flags are set to enable steering on both D2.0 and D3.0 CMs, load balancing is supported as follows:
D2.0 and D3.0 CMs are steered to ATDMA and SCDMA channels.