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5.
FAILOVER AND OUT-OF-BAND ACCESS
Introduction
The Console Server has a number of failover and out-of-band access capabilities to ensure availability in
the event there are difficulties in accessing the Console Server through the principal network path. This
chapter covers:

Out-of-band (OoB) access from a remote location using dial-up modem

Out-dial failover

OoB access using an alternate broadband link (B096-048/016 models only)

Broadband failover
5.1 OoB Dial-In Access
To enable OoB dial-in access, first set up the Console Server configuration for dial-in PPP access. Once
the Console Server is so configured, it will wait for an incoming connection from a dial-in at a remote
site.
Then remote Administrator’s must be configured to dial-in and must establish a network connection to
the Console Server.
Note
The B096-048/016 and B095-003-M Console Servers have an internal modem for dial-up OoB
access.
The B092-016 Console Server needs an external modem to be attached via a serial cable to its
DB9 port.
On the B095-004 Console Server,
the four serial ports are all configured by default as RJ serial
Console Server ports. However Port 1 can be configured to be the Local Console/Modem port to
enable the attachment of an external modem
.