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Questions tagged [ping]

Ping is a mechanism to see if a remote host is reachable via an IP network

Ping is used to send an ICMP packet to a remote host. The ICMP type sent is an echo request, and the type the remote host will send back is an echo reply. Some firewalls or hosts may block ICMP, so ping should not be the only tool used for troubleshooting.

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Can ping machine by IP but not by name

On my home network, connected by means of a LinkSYS WCG200 Wireless-G Cable Gateway and a Unicom switch I have several computers. One of these is an XP Home machine that I can ping by IP but not by name. Also from this machine I can ping other…
Guy
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Hyper-v core can see network devices but network devices can't see Hyper-v core

Having a little issue with Hyper-v core. Network set up, connected directly to main router, I can ping all devices successfully from the Hyper-v cmd but can not ping the Hyper-v box from any other device. Any ideas? Running Hyper-v 2012 r2
Chris
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Why would I get ping replies from a private IP outside of my subnet?

I have a computer with 2 network adapters, each on its own subnet. One is our private LAN, 192.168.1.0/24, the other is for the internet. The internet subnet is 10.251.85.161/27. When I ping-scanned the LAN, I received replies from some addresses…
HypnoToad
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Mininet host doesn't reply to ping

I am trying to implement MPLS on mininet and I was able to successfully do it. I am able to push, swap and pop tags correctly. I am having difficulties when I am trying to ping from one host to another. This is the network that I am working…
Rafael Luciano
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Nagios3 "Return code of 127 is out of bounds"

Without making any changes to nagios3 config or OS (debian) filesystem changes when I add some extra devices (to the 12000+ on it already) suddenly [1508925621] Warning: Return code of 127 for check of service 'PING' on host 'SOME-HOST.CISCO' was…
Recct
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How can I measure the exact time differences (offsets) between two machine?

How can the time differences between two Linux machine be measured accurately? I heard that 'Ping' gives RTT with the association of OS influences therefore not accurate in nanosecond level? If so, what else there have to measure the time difference…
Fida Hasan
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Destination Host Unreachable, Centos 7, Vmware

After setting the static IP address on vmware machine, restarted centos, here is that after I get this error: Destination Host Unreachable I try to change NAT to Bridge but nothing change, indeed, I can not connect using Putty in Bridge mode via…
Super Sonic
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Can't ping remote host through nat on ipsec enc0 (mtu=0)

I'm up ipsec vpn to remote host. Since the remote host accepts only one ip i'm up nat for local net on enc0. Ping from ipsec host is ok: PING 172.20.162.150 (172.20.162.150): 56 data bytes 64 bytes from 172.20.162.150: icmp_seq=0 ttl=252 time=2.597…
Morry
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Unable to ping domain name without FQDN

The domain name consists of numbers only, example 300010100. If I try pinging the name only without FQDN, it responds back with a very odd IP address, 0.154.29.62 and giving transmit failed errors. If I add .local to the end of the name,…
Benjamin Del Carpio
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Finding ip address from mac addess

I have router in bridge mode which is installed Openwrt and I want to find IP address of devices which are connected to the router. Since router is in bridge mode, I can not find IP from DHCP leases, but I can find mac address of connected…
Enes Aldemir
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Ping only works twice

I have created a vm inside a xen host. By following this guide, I have managed to ping www.google.com, but it only ping-pongs twice before getting Destination Host Unreachable. If I restart the vm, I can again ping twice before failing. $ - ping…
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Pinging Hostname results in reply from 2 different IP addresses

I have an odd behaviour on my Windows 2008 R2 server, when I ping a hostname of another system, my first reply has a different IP address then the following replies. For example, if I was to ping SERVER1, I get the following result: Reply from…
helpo112
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Ubuntu server 15 during ping (DUP!) what does it mean

For some time during ping 192.168.0.2 I have something like this (DUP!) something is wrong with my network card or switch? Image Ubuntu server 15 - *192.168.0.222* Windows server 2012 - *192.168.0.2* - Virtual machine 64 bytes from 192.168.0.2:…
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How to find the initial values of TTL for your current operating system?

In this answer to a question related to interpreting the values of TTL from a ping operation it is said that the TTL values vary depending on the operating system. I understood more or less the purpose of TTL, which is basically used to prevent…
user236846
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Can't Ping other local ips on l2tp vpn connection, getting: ping: sendmsg: No such device

I have setup an l2tp client using xl2tp to connect to an l2tp vpn server. The server connection requires that the connection be setup WITHOUT ipsec. So I have set up a basic xl2tp connection. The connections seems to work and I get an ip address…
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