Cisco 7246 - uBR Router Instrukcja Użytkownika Pobierz pdf (Strona 16)

Command Reference

12.0(3)T

cable insertion-interval

To set the time between opportunities for cable modems to request a connection from the

Cisco uBR7246, use the cable insertion-interval interface conﬁguration command. Use the no

form of this command to use the automatic setting and ignore any minimum or maximum time

settings.

cable insertion-interval [automatic][min | max]

no cable insertion-interval

Syntax Description

Default

automatic (dynamically varying the frequency of initial ranging upstream slots between

50 milliseconds to 2 seconds).

Command Mode

Interface conﬁguration

Command History

Usage Guidelines

Use this command to conﬁgure the frequency at which the initial maintenance interval is to appear

in MAP messages. MAP messages deﬁne the precise time intervals during which modems can

transmit.

Use the automatic keyword with this command when you have to bring a lot of modems on line

quickly (for example, after a major power failure). Override the automatic keyword by specifying

an insertion interval.

Example

The following example speciﬁes the automatic setting:

Router(config-if)# cable insertion-interval automatic

automatic Causes the Cisco uBR7246 MAC scheduler for each upstream

modem to vary the frequency of initial ranging slots used by new

modems joining the network.

min Minimum time in milliseconds that the cable modem termination

system (CMTS) is allowed to vary the initial ranging slot time.

Valid values are from 25 to 200. Default is 50 milliseconds.

max Maximum time in milliseconds that the CMTS is allowed to vary

the initial ranging slot time. Valid values are from 500 to 2000.

Default is 2000 milliseconds (that is, 2 seconds).

Release Modiﬁcation

11.3 NA This command was ﬁrst introduced.

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