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Chapter 2
Cisco CMTS Configuration Commands
balanced when they reach the same percentage of utilization. The first upstream is carrying more traffic
than the second upstream because it has a larger capacity for traffic, but the percentage of utilization will
be the same.
Certain conditions can cause a system instability that could result in the Cisco CMTS endlessly
Note
attempting to load balance the interfaces. For example, this situation could occur in noisy environments,
where cable modems drop offline on a regular basis, or when cable modems are repeatedly trying to
register because the provisioning system has sent them the wrong DOCSIS configuration files. If the
Cisco CMTS detects such unstable situations, it does not load balance cable modems from those
interfaces until the system stabilizes. However, if the system instability persists, you should increase the
threshold values using the
stability problems.
Use the no form of this command to delete a load-balance group. Deleting a load-balance group also
automatically removes all upstream and downstream channel associations that were made with that
group using the cable load-balance and cable upstream load-balance commands.
Tip
To exclude individual cable modems from one or more types of load balancing, use the
balance exclude
Examples
The following example shows how to create a load-balance group numbered 10, using the default method
of modem, which specifies that the Cisco CMTS uses the actual number of cable modems that are online
to determine load-balancing operations.
Router# config terminal
Router(config)# cable load-balance group 10
Router(config)#
The following example shows how to create a load-balance group numbered 1, which uses the number
of active SFIDs on an interface to determine the current load on the interface:
Router# config terminal
Router(config)# cable load-balance group 1 method service-flows
Router(config)#
Related Commands
Command
cable load-balance
exclude
cable load-balance
group (interface
configuration)
cable load-balance
group interval
cable load-balance
group policy ugs
cable load-balance
group threshold
OL-1581-08
cable load-balance group threshold
command.
Description
Excludes a particular cable modem, or all cable modems from a particular
vendor, from one or more types of load-balancing operations.
Assigns a downstream to a load-balance group.
Configures the frequency of the load-balancing policy updates.
Configures how the Cisco CMTS should load balance cable modems with
active unsolicited grant service (UGS) service flows.
Configures the threshold values that a load-balance group should use for
load-balancing operations.
cable load-balance group (global configuration)
command until you can solve the
Cisco Broadband Cable Command Reference Guide
cable load-
2-131
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