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Cisco Broadband Cable Command Reference Guide
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Chapter 2 Cisco CMTS Configuration Commands
cable cmcpe-list valid-time
cable cmcpe-list valid-time
To set the length of time that the CMTS will consider the current list of CM and CPE devices to be valid,
use the
cable cmcpe-list valid-time
command in global configuration mode. To reset the time period to
its default value of 3 minutes, use the
no
form of this command.
cable cmcpe-list valid-time
time
no cable cmcpe-list valid-time
Syntax Description
Defaults
180 seconds (3 minutes)—Cisco IOS Release 12.2(15)BC1 and earlier releases
900 seconds (15 minutes)—Cisco IOS Release 12.2(15)BC2 and later releases
Command Modes
Global configuration
Command History
Usage Guidelines
The Cisco CMTS maintains an internal list of CMs and CPE devices that are currently connected on its
cable interfaces. The CMTS uses this list to provide the data for various
show
commands and to respond
to SNMP requests that query the entries in the cdxCmCpeTable table in the
CISCO-DOCS-EXT-MIB
MIB.
By default, the Cisco CMTS uses the current list if it is less than 3 minutes old. If the current list is older
than 3 minutes, the Cisco CMTS considers it invalid and rebuilds a new list. This prevents the CMTS
from having to build a new list for every query, which could impact system performance.
You can use the
cable cmcpe-list valid-time
command to change the length of time that the CMTS
considers the current CM and CPE device list to be valid. This allows you to find the optimum time value
that provides the most current information without affecting the number of CPU cycles that are available
for network processing.
time
Specifies the time period, in seconds, that the Cisco CMTS should consider
the current CM/CPE list to be valid. In Cisco IOS Release 12.2(15)BC1 and
earlier releases, the valid range is 0 to 3600 seconds, with a default value of
180 seconds (3 minutes). In Cisco IOS Release 12.2(15)BC2 and later
releases, the valid range is 0 to 86400 seconds, with a default value of 900
seconds (15 minutes).
Release
Modification
12.0(15)SC1,
12.1(8)EC1,
This command was introduced for the Cisco uBR7100 series and
Cisco uBR7200 series routers.
12.2(4)BC1
This command was supported on the 12.2 BC train for the Cisco uBR10012
router.
12.2(15)BC2
The maximum range for time was expanded from 3600 to 86400 seconds,
and the default was changed from 180 to 900 seconds.
