10 More Discussions You Might Find Interesting
1. Programming
help with bash script!
im am working on this script to make sure my server will stay online, so i made this script..
HOSTS="192.168.138.155"
COUNT=4
pingtest(){
for myhost in "$@"
do
ping -c "$COUNT" "$myhost" &&return 1
done
return 0
}
if pingtest $HOSTS
#100% failed... (4 Replies)
Discussion started by: mort3924
4 Replies
2. Shell Programming and Scripting
Hi
I am using perl to ping a list of nodes - with script below :
$p = Net::Ping->new("icmp");
if ($p->ping($host,1)){
print "$host is alive.\n";
}
else {
print "$host is unreacheable.\n";
}
$p->close();... (4 Replies)
Discussion started by: tavanagh
4 Replies
3. IP Networking
I am unable to ping my remote server.My server is unable to ping the same. both are able to ping the gateway. both the ip's are on same network.i use a proxy tunnel on my remote server.Help if any clues. (6 Replies)
Discussion started by: oslbhavana
6 Replies
4. Shell Programming and Scripting
Hi,
I develop simple animation ping script on Solaris Platform. It is like Cisco ping.
Examples and source code are below.
bash-3.00$ gokcell 152.155.180.8 30
Sending 30 Ping Packets to 152.155.180.8
!!!!!!!!!!!!!.!!!!!!!!!!!!!!!.
% 93.33 success... % 6.66 packet loss...... (1 Reply)
Discussion started by: gokcell
1 Replies
5. Linux
Hi All,
Need your help one more time.
I am trying to ping a linux machine which is not responding to ping.
However traceroute can reach the machine and I can log in to it by ssh. I have checked /proc/sys/net/ipv4/icmp_echo_ignore_all it is already set as "0".
It is not happening in the... (1 Reply)
Discussion started by: ailnilanjan
1 Replies
6. IP Networking
hi,
I m trying to ping ip on the network . The machine is started but i can't access and can't ping it .. But when i restarts that machine that works fine..... can anybody have an idea about this problem ??
if then reply ..
thanks (2 Replies)
Discussion started by: tahir23
2 Replies
7. UNIX for Dummies Questions & Answers
Hi ,
I have one system installed on Linux Red Hat 3.0. I have ip of system 3.156.168.*** and i want to ping some port that is on this IP which command i can do this?
sam70 (1 Reply)
Discussion started by: sam70
1 Replies
8. AIX
We can ping out but the return never comes back even to localhost
ping localhost
PING loopback: (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=0 ms
it just sits there....
any ideas, any files to check (1 Reply)
Discussion started by: csaunders
1 Replies
9. UNIX for Dummies Questions & Answers
Hi there hope list can help
I'm looking for a command that does the following
lets say i ping a server 00.00.000.00
and this server is up and running how do i get the ping command to return a UP or a Down
meaning
if the command is true do this
if the command is False do this
... (2 Replies)
Discussion started by: nemex
2 Replies
10. IP Networking
Hi,
When I pinged a machin, I got to be seen a different kind of
reply from that machine.
This is as below : "Reply from 136.128.11.116: Source quench received." Which I felt like an un-usual message.
So what does this mean.
Regards & Thanks in advance.
Vishwa. (4 Replies)
Discussion started by: S.Vishwanath
4 Replies
network-test(1) ifupdown-extra network-test(1)
NAME
network-test - check the network and test if everything is fine
SYNOPSIS
network-test
DESCRIPTION
The network-test program will test your system's network configuration using basic tests and providing both information (INFO), warnings
(WARN) and possible errors (ERR) based on the results of these tests. It will check and report on:
* Status of the network interfaces of the system including: link status,
IP addressing and number of transmitted packets and error rates.
* Accessibility to configured routes to external networks,
including the default network route, checking the routers configured
to give access to the network
* Proper host resolution, testing DNS resolution against a known host.
* Proper network connectivity, testing reachability of remote hosts using ICMP and simulating a web connections to a remote web
server (the web server used for the tests can be configured through the environment, see below)
The program does not need special privileges to run as it does not do any system change.
However, the behaviour of the program when running as an unprivileged user is not the same as running as system administrator (i.e. root).
If the program is run as system administrator it will try to run some tools that are only available to it to speed up some of the tests.
The program relies on the use of ip, netstat, ifconfig, arp and (when running as root) ethtool or mii-tool, to obtain information about the
system's networking configuration (status of available interfaces and configured network routes). It also uses ping, host and nc (netcat)
to do tests of the network connectivity and ensure that the host can connect to the Internet.
ENVIRONMENT
The program will, by default, check www.debian.org and its associated web server. If you want to use a different check host you can setup
the environment as follows:
CHECK_HOST
The name of a host to use when testing DNS resolution.
CHECK_IP_ADRESS
The IP address of the host defined in CHECK_HOST
CHECK_WEB_HOST
The web server to use for testing purposes when testing network connectivity.
CHECK_WEB_PORT
The web server port of server CHECK_WEB_HOST that will be used for testing.
EXIT STATUS
The program will exit with error (1) if any of the network checks fail.
BUGS
This program does not have super cow powers so it is unable to fix the errors by itself. It is also unable to detect if the network is
failing due to a local firewall policy been in place so make sure you check your system logs with dmesg (1) to detect if some of the active
tests are being dropped due to your local firewall.
Other known issues that might make the program not work reliable are:
* IPv6: The program does not yet explicitly handle IPv6 only hosts, some of the tests might be biased towards IPv4 and might fail in
IPv6 environments.
* Proxies: The program does not check network connectivity for hosts that connect through the Internet using a proxy gateway for
services. The program might report issues in hosts using proxies even when these might connect to the Internet properly through
proxied services.
* Firewall environments: some of the tests rely on direct connectivity to external hosts, which are tested using ICMP queries
(through the use of ping. These tests might fail in hosts installed in networking environments with firewalls that block outbound
ICMP communication.
SEE ALSO
ip (8), netstat (8), ifconfig (8), ethtool (8), mii-tool (8), ping (8), nc (1) and host (1).
AUTHOR
network-test was written by Javier Fernandez-Sanguino for the Debian GNU/Linux distribution.
COPYRIGHT AND LICENCE
Copyright (C) 2005-2011 Javier Fernandez-Sanguino <jfs@debian.org>.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) any later version.
On Debian systems, a copy of the GNU General Public License may be found in /usr/share/common-licenses/GPL.
ifupdown-extra August 23 2011 network-test(1)