Avaya BCM 4.0 Networking Przewodnik Konfiguracji Strona 567

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567
BCM 4.0 Networking Configuration Guide
Chapter 63
Configuring Net Link Manager
Net Link Manager is a BCM service that provides WAN link failure protection. This is achieved
by selecting a primary WAN interface and a back up WAN interface. Only dial up interfaces can
be selected as a WAN backup.
Refer to the following for information about enabling/disabling Net Link Manager, as well as how
to select WAN links:
“To enable or disable Net Link Manager” on page 569
“Selecting a permanent WAN link as the primary WAN connection” on page 569
“Selecting a dial-up link as the primary WAN connection” on page 571
When Net Link Manager detects a primary WAN link failure, Net Link Manager automatically
establishes a backup WAN connection, if one is configured. Net Link Manager monitors the WAN
primary link by performing multiple tests. When a predetermined number of tests fails, Net Link
Manager establishes the backup connection.
The backup connection uses a V.92 modem or one or more ISDN B-channels or the PPPoE
interface. When the backup WAN connection is active, Net Link Manager continues to monitor
the status of the primary WAN link connection. When the primary WAN link connection is
determined to be available again, Net Link Manager re-establishes the primary WAN link and
disconnects/disables the backup connection.
Table 22 Backup Links
Primary Link
Interfaces
Permanent
WAN1
Permanent
WAN2 LAN1 LAN2
PPPoE on
LAN1
Modem
V.90/V.92 ISDN
Backup Link
Permanent
WAN1
NNNNNNN
Permanent
WAN2
NNNNNNN
LAN1
NNNNNNN
LAN2
NNNNNNN
PPPoE on LAN1
Y YNYNNN
Modem V.90/V.92
Y Y Y YNNN
ISDN
Y Y Y YNNN
Y= Connection is supported.
N= Connection is not supported.
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