user manual

Line Backup 8-15

This screen is used to conﬁgure the conditions under which backup will occur, if it will recover, and how the

alternate gateway is conﬁgured.

• Select Backup is and press Return. A pop-up menu allows you to select Disabled, Manual, or Automatic.

You enable backup by selecting either Manual or Automatic. If you enable backup, the subsequent menu

items become visible.

• Select Requires Data Link Failure of (seconds). Enter the number of seconds you want the system to wait

before the backup port becomes enabled in the event of primar y line failure. This allows you to be sure the

WAN connection is not merely brieﬂy interrupted before the gateway switches to backup mode.

• Select Ping Host Name or IP Address #1 and #2 and enter IP address(es) or resolvable DNS name(s) that

the Router will ping. These are optional items that are particularly useful for testing if the remote end of a

VPN connection has gone down.

The Router will ping both addresses simultaneously at ﬁve-second intervals, recording the ping responses

from each host. The Router will proceed into backup mode only if neither of the conﬁgured remote hosts

responds.

While the Router is in backup mode, it will continue to ping both hosts via the primary interface. If either

host responds to a ping and Recovery is set to Automatic, the Router will revert to the primary inter face.

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.

• Select Recovery to “WAN_name” (where WAN_name is the type of WAN connection you have, such as

ADSL) and press Return. Choose either Manual or Automatic to determine how the system will return to the

WAN link when it becomes available again. If you choose Automatic, the next two menu items become

visible.

• If you chose Automatic Recovery, select Requires Recovery of. Enter the number of seconds you want

Backup Configuration

+-----------+

Backup Parameters +-----------+

Backup is... | Disabled |

Requires Failure of (seconds): | Manual |

Ping Host Name or IP Address #1: | Automatic |

Ping Host Name or IP Address #2: +-----------+

Recovery to ADSL... Automatic

Requires Recovery of (seconds): 60

Auto-Recovery on loss of Layer 2: No

Automatically switches to Backup Port on loss of Layer 1 or 2.