Avaya Configuring Dial Services Manual de usuario descargar pdf (Pagina 141)

100

101

Dial-on-Demand Implementation Notes

117353-B Rev. 00

6-7

Example 1: Failback Times That Overlap

If you schedule the standby circuit to terminate before the failback time expires,

the router still terminates the standby circuit. The router does not wait for the

primary circuit to recover. There is no circuit available until the primary circuit

reactivates or the standby circuit is available again (see “Example 2: Failback

Time Results in No Available Circuit”).

Example 2: Failback Time Results in No Available Circuit

7:00 a.m.

The primary circuit fails.

8:00 a.m.

The standby circuit becomes available.

10:30 a.m.

The primary circuit recovers and the failback timer starts counting

down from 60 minutes. Data is still traveling over the standby circuit.

11:00 a.m.

Since 10:30 a.m., 30 minutes of failback time have elapsed for Time

of Day Schedule 1, but Time of Day Schedule 2 is now active. This

new schedule has a failback time of 10 minutes, which supersedes

the previous failback time of 60 minutes. Because 10 minutes have

passed, data traffic returns to the primary circuit.

3:00 p.m.

The primary circuit fails and a standby circuit is activated, as

specified in Time of Day Schedule 2.

4:55 p.m.

The primary circuit recovers. The failback timer starts counting down

from 10 minutes.

5:00 p.m.

After 5 minutes, Time of Day schedule 3 is active. The standby

circuit is brought down and will not be available until 7:00 p.m.

For 5 minutes, there is no circuit available to transmit data.

5:05 p.m.

Data traffic transfers back to the primary circuit.

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