Avaya Configuring Dial Services Bedienungsanleitung Seite 52

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Configuring Dial Services
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308621-14.00 Rev 00
If the backup circuit uses a unique configuration, it is called the secondary
configuration. A secondary configuration uses a different network layer address
and data link layer configuration (PVCs and filters) from the primary circuit.
Bandwidth-on-Demand Service
Bandwidth-on-demand service lets you configure additional dial-up lines for:
A congested leased line
A congested multilink bundle, which is a set of links between two peer routers
A congested dial-on-demand line
When data traffic exceeds the capacity of a line or bundle, bandwidth-on-demand
service reduces congestion by adding up to 29 dial-up lines. The router can then
provide a total of 30 lines for communication.
PPP multilink is the protocol that enables the router to use multiple dial-up lines
simultaneously to transmit data. The actual number of lines in a multilink bundle
depends on hardware platform constraints, total speed of the bundle, the speed of
each link, and the type of traffic you are sending.
You can manage the allocation of bandwidth for a multilink bundle using the PPP
BAP. This protocol is available only for ISDN lines; you configure it after you
configure bandwidth-on-demand service. For more information about BAP, see
Chapter 8, “Bandwidth-on-Demand Implementation Notes.”
Note:
If the backup circuit connects to a different interface at the destination
than the primary circuit, you do not need to configure unique PVCs for the
backup circuit. In this case, the switch informs the destination router of the
available PVCs.
Note:
For information about adding bandwidth for demand lines, see “Adding
Bandwidth Service for Congested Demand Lines” on page 1-12.
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