NEXCOM IFA 1610 - Manual (Page 30)

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. IFA 3610/IFA 2610/IFA 1610 User Manual
Chapter 2: The Status Menu
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Uptime and users
This box shows the output of the Linux
w command, which reports the current time, information about how long the
system has been running since last reboot, the number of console users that are currently logged into the system (though
normally there should be none) and the system load average for the past 1, 5, and 15 minutes. Additionally, if any
console user is logged into the system, some information about the user is displayed (like the remote host from which
she is logged in or what is she doing). More details can be found on the w(1) manual page.
Loaded modules
The output of the Linux
lsmod command. It shows the kernel modules currently loaded into memory. This information
should be useful to advanced users only.
Kernel version
The output of the Linux
uname -r command, which shows the current kernel version.
2.2 Network status
This page contains several information about the running state of the network interfaces. Four boxes are present on the
page. The boxes contain the following information, representing the output of different shell commands.
Interfaces
The first box reports the output of the
ip addr show command which provides for each network interface the associated
MAC address, IP address, and additional communication parameters. The active interfaces are highlighted with the
colour of the zone they are serving. The interface can be an ethernet interfaces, a bridge, or a virtual device.
NIC status
The running configuration and capabilities of each of the NIC are shown here. Each interface is highlighted with the
colour of the zone it is serving and is labelled as [Link OK] to indicate that it is working. Interfaces that are not used are
labelled with ‘[NO Link]’. The command providing the output is
ip link show.
Routing table entries
The kernel routing table, as provided by the
route -n command. Typically, there should be one line per active interface,
which correctly routes the traffic within the zones served by the IFA 3610/IFA 2610/IFA 1610 appliances, plus a default
route (recognisable by the 0.0.0.0 Destination field) that allows the traffic to reach the Internet.
ARP table entries
The last box shows the output of the
arp -n command and shows the ARP table, i.e., a table containing the MAC address
associated to each known IP address in the local network.
2.3 System graphs
The graphs displayed in this page present the usage of resources during the last 24 hours: CPU, memory, swap, and disk
usage, each accompanied with a legend of the data included in the graph, their associated colour, and a summary of the
maximum, average, and current percentage of use. Moreover, a message informs of the time and date of the last update
to the graphs, which matches the last access to the page.
When clicking on one of the graphs, a new page will open, with summaries of the usage graphs for the last day, week,
month, and year. In these pages, a click on the BACK button allows to return to the previous page.
Note: The nan (short for “Not A Number”) string that may appear in the summaries designate that there are not enough
data to calculate the usage of the selected resource. It can appear for example in the “per year usage” when the IFA
3610/IFA 2610/IFA 1610 appliances are used for only a few weeks.
CPU graph
In this box is shown the CPU usage per day of the IFA 3610/IFA 2610/IFA 1610 appliances, measured in percentage of
the CPU time used by the various processes. The output is provided by the
top command. Different colors are used to
denote the type of running processes:
▪ White - idle, i.e., time the CPU is not used by any process.
▪ Green - nice processes, i.e., user processes which have changed their default priority.
▪ Blue - user processes with default priority.