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Chapter 2
Cisco CMTS Configuration Commands
cable load-balance group interval
To configure the frequency of the load-balancing policy updates, use the cable load-balance group
interval command in global configuration mode. To reset the frequency of the policy updates to its
default values, use the no form of this command.
Syntax Description
n
interval
Defaults
Each load-balance group defaults to a frequency of 10 seconds to determine the current load on an
interface, allowing at most one cable modem to be moved every 10 seconds.
Command Modes
Global configuration
Command History
Release
12.2(15)BC1
Usage Guidelines
To properly perform load balancing, the Cisco CMTS must determine the actual load on an interface on
a periodic basis. This frequency of the updates also determines how frequently cable modems can be
moved to achieve balanced loads. One cable modem, at most, is moved during each update period.
The more often these updates are performed, the more accurate the Cisco CMTS can be in performing
its load-balancing operations. As a general rule, begin with the default frequency value of 10 seconds,
and then adjust the value accordingly, in small increments, as load balancing conditions or performance
levels might require.
Having too small an interval could result in cable modems being constantly moved to achieve balanced
Note
loads during peak usage times when load balance could spike to transient heavy traffic. Also, more
frequent updates can have a performance impact, especially on routers with a large number of active
interfaces and cable modems.
OL-1581-08
cable load-balance group n interval interval
no cable load-balance group n interval
Specifies the number of the load-balance group. The valid range is 1 to 20.
Specifies the frequency, in seconds, for how often the Cisco CMTS should
determine the current load on each cable interface. This also determines the
minimum time between when cable modems can be moved to load balance
the interfaces. One cable modem at most is moved during each interval time
period. The valid range is 0 to 3600 seconds, with a default value of 10
seconds.
Modification
This command was introduced for the Cisco uBR7246VXR and
Cisco uBR10012 routers.
cable load-balance group interval
Cisco Broadband Cable Command Reference Guide
2-135
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