Nortel Networks NN43001-315 - Manual (Page 104)

104 CS 1000 on Linux base
Figure 101
Critical Set alarm example
Figure 102
Critical Clear alarm example
Hardware watchdog
The IBM x306m and HP DL320 G4 servers offer a hardware watchdog.
The watchdog timer is programmed during the server startup and requires
continuous resets from a daemon running in Linux. The watchdog timer is
based on the current ISP1100 server, which is 5 minutes.
The server is reset if the watchdog timer is not reset within the allotted
time. The operating system and applications are reloaded from disk and
started after the server reset occurs. The following conditions can trigger
the watchdog:
•
The software daemon, which notifies hardware watchdog, fails to
respond.
•
A hardware or software problem causes the system to freeze.
Linux Security Hardening
The following features enhance Linux base security.
Virus protection
If antivirus software is installed by the customer the following is
recommended:
• Antivirus software that uses 100 megabytes (MB) or less of hard drive
space.
• Choose software that uses 84 MB or less of RAM.
• Always set the process priority to low.
•
Perform virus scans during off-hours only.
Nortel Communication Server 1000
Linux Platform Base and Applications Installation and Commissioning
NN43001-315 02.09
29 October 2008
Copyright © 2007–2008 Nortel Networks
.