Chapter 4:
Firewall, Failover & OOB Access
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The console server attempts to re-establish the connection in the event of a disruption in the dial-out
connection.
4.3.1 Always-on dial-out
The console server modem can be configured for out-dial to be always on, with a permanent external dial-
up ppp connection.
•
Select the
System > Dial
menu option and check
Enable Dial-Out
to allow outgoing modem
communications
•
Select the
Baud Rate
an
d Flow Control
that will communicate with the modem
•
In the
Dial-Out Settings - Always On Out-of-Band
field enter the access details for the remote PPP
server to be called
Override DNS
is available for PPP Devices such as modems. Override DNS allows the use of alternate
DNS servers from those provided by your ISP. For example, an alternative DNS may be required for
OpenDNS used for content filtering.
To enable
Override DNS
, check the Override returned DNS Servers box. Enter the IP of the DNS servers
into the spaces provided.
4.3.2 Failover dial-out
The ACM7000, CM7100, and IM7200 can be configured so a dial-out PPP connection is automatically set
up in the event of a disruption in the principal management network.
NOTE
SSH and HTTPS access is enabled on the failover connection so an administrator can SSH or
HTTPS connect to the console server and fix the problem.
1.
When configuring the principal network connection in
System > IP
specify the
Failover Interface
used when a fault is detected with Network / Network1 (eth0). This can be either
Internal Modem
