Avaya Configuring Dial Services Manual de usuario descargar pdf (Pagina 53)

Dial Services Overview

117353-B Rev. 00

1-25

When a leased line or bundle becomes congested, the router searches for an

available dial-up line from its associated bandwidth-on-demand pool. Lines in a

bandwidth-on-demand pool can reside on any slot, but each secondary circuit can

use only three slots.

To determine the order in which the router searches the slots, you designate each

slot as preferred or reserved. The router uses the preferred slot first. If there are no

available lines, the router uses the reserved slot. If there are still no available lines,

the router automatically uses the local slot, which is the slot containing the first

leased line that was activated. Once the router finds a line, it dials the destination

using a phone number from the user-configured outgoing phone list.

How Lines, Pools, and Circuits Work Together

You assign a pool ID for each leased circuit or demand circuit. If the line or bundle

becomes congested, the router activates a dial-up line from the pool. The dial-up

circuit that runs over this line inherits the configuration and protocol

characteristics of the leased circuit.

You can assign the same bandwidth pool ID to more than one circuit. If you want

a pool of dial-up lines dedicated to a specific bandwidth circuit, assign the pool

exclusively to that circuit. Remember to first configure a leased or demand

connection before configuring bandwidth-on-demand service.

Activating Dial-up Lines to Relieve Congestion

If one dial-up line from the bandwidth pool does not relieve the congestion, the

router adds up to 29 lines until the congestion is relieved. The router activates

additional lines only for a congested line, not for a failed line.

PPP multilink detects a state of congestion based on byte counts and the

user-defined monitor parameters. (As of BayRS Version 12.10, byte counts are

measured after data compression.) The monitor parameters let you define

congestion thresholds for the leased or demand circuit. If data traffic exceeds a

threshold, the router tries to activate a dial-up line. At this point, if you configure

BAP, it manages the addition and removal of lines from the multilink bundle,

based on the monitor parameters. For more details about BAP, see Chapter 8,

“Bandwidth-on-Demand Implementation Notes.”

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Avaya Configuring Dial Services Manual de usuario Pagina 53