Chapter 31: Load Balancing
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 895
If moving older CMs running Baseline Privacy Interface (BPI) across MAC Domains, the recommended DCC init-
technique is reinit-mac. Older CMs running BPI are known to have a problem with BPI rekeying after being moved
across MAC Domains with initialization techniques other than reinit-mac. When this problem occurs, the DCC succeeds,
but the CM cannot send or receive data.
Load Balancing Policy
A load balancing policy is described by a set of conditions (rules) that govern the load balancing process for a cable
modem. A policy may be referenced by multiple load balancing groups. A policy may contain more than one rule.
A policy ID value is a numeric reference to a policy. However, the policy ID may refer to a non-existing or inactive policy
instance in which case it indicates an inactive policy.
The policy ID of value 0 is the default policy which contains the default rule.
Note: If no policy is assigned to a load balance group, the default policy is used.
Load Balancing Rules
A load balancing policy rule governs autonomous load balancing operations.
A rule ID value is a numeric reference to a rule. However, the rule ID may refer to a non-existing or inactive rule instance in
which case it indicates an inactive rule.
Each rule has the following attributes:
type – space-separated list of load balancing types (any combination of static, non-bonded-dcc, bonded-ds-dbc,
bonded-us-dbc, bonded-dcc).
method – load balancing method (modem or utilization)
threshold – percentage load difference between channels before load balancing occurs.
channel weight – specifies the relative weighting of the US and DS channels, which is used to order the channel pairs
within a load balancing group from highest to lowest load.
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