Netopia 3300-ENT Note:

Line Backup 7-11

has gone down. Should this address become unreachable the router will treat this as a loss of connectivity

and begin the backup timer. This loss is a Layer 2 loss.

Note: For best results, enter an IP address and not a host name. If a host name is used it may not be

resolvable, and may keep the interface down.

Set the Ping Host Name or IP Address to the router's Default Gateway, or other reliable IP address

elsewhere on the backbone – for example, a DNS server. This will ensure that the router will initiate backup

connection on loss of Layer 3.

Note: If you want the router to initiate the backup connection on loss of Layer 1 or 2 only (Physical or Data

link Layer), leave Ping Host Name or IP Address blank. Do not use 0.0.0.0 in this ﬁeld. Hit the space bar or

Delete key to CLEAR the ﬁeld totally. Leaving 0.0.0.0 in this ﬁeld tells the router to ping an address that does

not exist.

•Select Recovery to ADSL and press Return. Choose either Manual or Automatic to determine how the

system will return to the primary WAN link when it becomes available again. If you choose Automatic, the

next two menu items become visible.

Note: Automatic recovery only works upon loss of primary WAN connectivity.

•If you chose Automatic Recovery, select Requires Recovery of (minutes) and enter the number of min-

utes that the system should wait before it assumes that a connection has been re-established. This

allows you to be sure that the primary WAN connection is well re-established before the router

switches back to it from the backup mode. If the router's primary connection fails at layer 1, the

Requires Recovery of (minutes) parameter determines the amount of time the primary layer 1 connec-

tion must be up (recovered) before the router will tear down the backup connection and revert to the

primary interface.

•Select Clear Backup Call only if idle. The default Yes will prevent the backup call from being torn down if

there is activity on the backup connection when the primary connection comes back up. You can toggle this

to No if you wish.

The Clear Backup Call only if Idle timer is a separate timer from the Requires Recovery of (minutes)

timer. The router will ﬁrst reach the Requires Recovery of (minutes) counter and count down to zero. Then

the router will consult the Clear Backup Call only if Idle timer to learn if the backup connection has been

idle for the speciﬁed seconds. If the connection has been idle for the speciﬁed seconds, then the teardown

process of the backup connection will begin.

•Requires idle time of (seconds) speciﬁes how long the device should wait before permitting the call to be

torn down after a period of inactivity.

•Data Link Encapsulation is set to Async PPP. This ﬁeld is not editable.

When you are ﬁnished, press Escape.