Chapter4 Edit Interface/Connection
Dialer Options
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Cisco Router and Security Device Manager Version 2.2 User’s Guide
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Idle timeout
Enter the number of seconds that will be allowed to pass before an idle connection
(one that has no traffic passing over it) will be terminated.
Fast idle timeout
The fast idle timout sets the maximum number of seconds of that can pass on a
connection for which there is contention that has no interesting traffic before the
connection is terminated and the competing connection is made.
This occurs when the interface has an active connection to a next hop IP addre ss
and the interface receives interesting data with a different next hop IP destination.
Because the dialer connection is point-to-point, the competing packet cannot be
delivered until the current connection is ended. This timer sets the amount of time
that must pass while the first connection is idle before that connection will be
terminated and the competing connection made.
Enable Multilink PPP
Multilink PPP is available only for ISDN BRI connections. Multilink PPP lets you
load-balance data over multiple ISDN BRI B channels. Using multilink PPP,
when an ISDN connection is initially made, only one B channel is used for the
connection. Should the traffic load on the connection exceed the specified
threshold (entered as a percentage of total bandwidth), then a connection with a
second B channel will be made, and the data traffic will be shared over both
connections. This has the advantage of reducing connection time and cost when
data traffic is low, but letting you use your full ISDN BRI bandwidth when it is
needed.
Check this check box if you want to enable multilink PPP. Clear it if you do not.
Load Threshold
Use this field to configure the percentage of bandwidth that must be used on a
single ISDN BRI channel before another ISDN BRI channel connection will be
made to load-balance traffic. Enter a number between 1 and 255, where 255
equals 100% of bandwidth on the first connection being utilized.
Data Direction
SDM supports Multilink PPP only for outbound network traffic.