3
votes
1answer
80 views

Check ping statistics without stopping

Is there a way to tell ping to show its usual termination statistics without stopping the execution? For instance, I'd like to quickly view: --- 8.8.8.8 ping statistics --- 2410 packets transmitted, ...
2
votes
1answer
93 views

Most reliable way to check for connected client?

I have an embedded Linux OS developed from scratch using Yocto. This talks to a Windows XP/7 client. The embedded OS runs a DHCP server and gives an address to the client. The problem is that the ...
0
votes
2answers
96 views

traceroute gives only stars + how to fix

Please advise about the following problem. When I do: $ traceroute 8.8.8.8 I get in the output showing only stars, even though pinging to google.com ( 8.8.8.8) appears to be working. Please ...
2
votes
1answer
78 views

How do I create an IPv6 overlay network?

I would like to create host-only IPv6 networks on two hosts and then route between them. On each host, there will be a dummy interface, at ipv6_prefix::9. I would like to be able to ping that ...
1
vote
2answers
2k views

How to check whether certain port is opened or block on any other servers from a dev box?

I am trying to connect to one of our staging Cassandra servers on port 9042 and 9160 here in our company from a dev box.. Through the code, I am not able to connect to it... The program gets hanged at ...
4
votes
1answer
153 views

Strange ping behavior

I built a linux distribution using the Yocto Project, with little customization. It runs on a Single Board Computer. When I ping this machine, I get the following result: PING 10.128.11.1 ...
0
votes
1answer
137 views

Ping a list of IP addresses and outputing duplicates

In Linux how can I ping a list of IP addresses (in a text file) and only output those that have duplicate ping replies?
0
votes
0answers
164 views

unable to ping gateway and CLAN in Linux but pingable in Windows PC

We're installing RHEL 5.5 for our Voice Portal (Avaya). After configuring the IP address, gateway IP, and netmask we tried to ping it so we could see if it was pingable/active or not. Sadly its ...
2
votes
1answer
676 views

Quickly check whether many network hosts are up-and-running

Objective: check if a host is up-and-running on the network, with a method that can be efficiently parallelized over many hosts. Emphasis on a QUICK turnaround of the check. Reason to emphasise ...
6
votes
3answers
7k views

What prevents a machine from responding to pings?

I have a CentOS release 5.4 linux box on Amazon EC2 that I'm trying to set up to be monitored via Nagios. The machine is in the same security group as the nagios server, but it seems to be ...
2
votes
2answers
725 views

Behavior of ping with partial packet loss on Ubuntu

I am specifically looking on the return variables of running ping on my Ubuntu server, the variables I am looking for is: error status, output on stdout, output on stderr. When pinging a host the ...
4
votes
4answers
2k views

“internet connection checker one-liner”

With this I can check, that there is "internet connection". if there is no "internet connection" (succesfull pings to this 2 places), then it waits 600 sec, then it runs along: ping -W 1 -c 4 ...
4
votes
2answers
2k views

Can't ping broadcast

We're running four computers connected to a hub (yes a hub not a switch) on Fedora 13. They were installed using images from a colleague that has recently left us to go back to school, they may have ...
2
votes
1answer
380 views

Redhat Enterprise Linux 4.7 - Ping problem

When I try to ping some of the IP addresses I get "connect: No buffer space is available" error. Also when I check /var/log/messages, there are some errors like as following printk: 99 messages ...