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check_serial_signals is used to monitor the handshaking lines on the serial ports
check_port_log is used to monitor the data logged for a serial port.
10.4.3 Additional plug-ins
Additional Nagios plug-ins (listed below) are available for Advanced Console Servers (LES1208A-R2,
LES1216A-R2, LES1232A, LES1248A-R2:
check_apt
check_by_ssh
check_clamd
check_dig
check_dns
check_dummy
check_fping
check_ftp
check_game
check_hpjd
check_http
check_imap
check_jabber
check_ldap
check_load
check_mrtg
check_mrtgtraf
check_nagios
check_nntp
check_nntps
check_nt
check_ntp
check_nwstat
check_overcr
check_ping
check_pop
check_procs
check_real
check_simap
check_smtp
check_snmp
check_spop
check_ssh
check_ssmtp
check_swap
check_tcp
check_time
check_udp
check_ups
check_user
You can download these plug-ins from the Nagios plug-ins package from www.blackbox.com.
You can also download and run bash scripts (primarily check_log.sh).
To configure additional checks, save the downloaded plug-in program in the tftp addins
directory on the USB flash and save the downloaded text plug-in file in /etc/config
To enable these new additional checks, select Seria l& Network: Network Port, then Edit the
Network Host you want to monitor, and select New Checks. The additional check option is
included in the updated Nagios Checks list, and you can again customize the arguments.
10.4.4 Number of supported devices
Ultimately the number of devices that by any particular console server can support depends upon the
number of checks made, and how often they are performed. Access method will also play a part. The
table below shows the performance of three of the console servers:
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