Cisco 7246 - uBR Router Manual de usuario descargar pdf (Pagina 10)

Command Reference

12.0(3)T

cable ﬂap-list aging

To specify the number of days to age the cable modem from the ﬂap-list table, use the cable ﬂap-list

aging global conﬁguration command. Use the no form of this command to disable this feature.

cable ﬂap-list aging number of days

no cable ﬂap-list aging

Syntax Description

Default

No default behavior or values.

Command Mode

Global conﬁguration

Command History

Usage Guidelines

A ﬂap list is a table maintained by the Cisco uBR7246 for every modem (active or not) that is having

communication difﬁculties. The cable ﬂap list tracks the cable modem MAC address up and down

transitions, registration events, missed periodic ranging packets, upstream power adjustments, and

the CMTS physical interface. (Flapping refers to the rapid disconnecting and reconnecting of a cable

modem that is having problems holding a connection.) The ﬂap list contains modem MAC addresses

and logs the time of the most recent activity. You can conﬁgure the size and entry thresholds for the

ﬂap list.

Example

The following example speciﬁes that the ﬂap-list table retain two days of performance for this cable

modem:

Router(config)# cable flap-list aging 2

Related Commands

number of days Speciﬁes how many days of cable modem performance is

retained in the ﬂap list. Valid values are from 1 to 60.

Release Modiﬁcation

11.3 NA This command was ﬁrst introduced.

Command Description

cable ﬂap-list insertion-time Sets the insertion time interval.

cable ﬂap-list power-adjust threshold Speciﬁes the power-adjustment threshold for recording a

ﬂap-list event.

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Cisco 7246 - uBR Router Manual de usuario Pagina 10