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

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Can't ping hostname, but 'ping -a' resolves

I'm trying to ping a Windows PC through VPN by hostname. WINS is set up on all devices. I only get a reply from some PCs. On devices that can't be ping'd, I can do ping -a to resolve the hostname. For ...
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Ping through nat [on hold]

I made a simple application that lists every host in the LAN. It just calculates the ip ranges of the Whole network and pings every possible host: who answers goes into the list. At my home, works ...
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12 views

Packet loss on one computer, only offsite servers

I have an odd problem that I have never seen before. An end user was experiencing some problems with slower than normal internet. So, I ran my default runthrough of tests, and sure enough when pinging ...
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1answer
39 views

VPS can ping host by IP but not by name

My Debian VPS can ping all host by name and IP but there's one host I can't ping by name. Ping by name failed but successful with IP However on my home PC i can ping that host by name and IP. I ...
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1answer
69 views

Is it possible to offer failover even using DNS round robin? [closed]

A company X has five ips to a given service. $ host www.example.com.br www.example.com.br has address 13.194.4.159 www.example.com.br has address 13.194.4.152 www.example.com.br has address ...
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2answers
76 views

Fastest way to scan all hosts that are online

I am looking to find all the hosts that are online in a set of networks. I would like to find all hosts that are online in the entire network of 170.10.. (there are ~64K possible hosts). The network ...
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2answers
138 views

Can browse, but can't ping

I am behind a corporate network. I am unable to use git, since it can't resolve server names fatal: Unable to look up someserver.org (port 9418) (No such host is known. ) I can't ping that server ...
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38 views

Destination host is unreachable

Points to Note I am installing cloudera 4.6.0 using docker in pseudo distributed mode. I have created two docker containers. One is for hadoop and another is for flume. I linked two containers as ...
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1answer
54 views

First Reply on Ping is Unreachable the rest is okay [closed]

please check this weird ping i'm having What may have caused this problem
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2answers
55 views

Why Ping starts showing results only after a minute

I am running a Solaris 11 system over a local private network 192.168.100.0/24 and I run ping -s to get continuous ping. From the Gateway to my server I get root@mygateway:~# ping -s 192.168.100.42 ...
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2answers
70 views

extreme ping latency in WDS network

I have setup a wireless network at work office with the following config: 192.168.1.1: TP-Link 941 Router, Root AP, connected to internet 192.168.1.2: TP-Link 901 AP, WDS Repeater, connected to ...
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1answer
188 views

Cannot ping to localhost into CentOS

I'm connecting to my server (Centos 7) with ssh and I try to ping to localhost: ping 127.0.0.1 but doesn't work: ping 127.0.0.1 PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data. ^C --- 127.0.0.1 ping ...
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Bad ping results while testing 6000 TCP clients with 18 mbytes/s total traffic on Windows Web Server 2008

The clients are running on the machine #1. The server is installed on the machine #2. The machines have a gigabit connection through a switch on their private vlan. There are no errors in the switch ...
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2answers
71 views

TTL in ping vs dig

When I ran ping google.com, I get a ttl value of 55: 64 bytes from 173.194.127.103: icmp_seq=68 ttl=55 time=16.4 ms When I ran dig google.com @ns1.google.com., it get a TTL value of 300. ...
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25 views

What does ipg/ewma mean in an output of ping -f?

I pinged in a flood mode: # ping -c 1000000 -f 127.0.0.1 and I got the following output: PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data. --- 127.0.0.1 ping statistics --- 1000000 packets ...
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2answers
64 views

how to force linux to accept packet with loopback ip

i have an embedded system with an Ethernet interface that needs to accept external packets with IP of 127.x.x.xx. is there a way to force Linux to accept external packets with this loop back address ...
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1answer
97 views

DNS and PING failure - Windows 2003 DNS and SonicWall NSA240

I am hoping someone can shed some light on this one... I have two Windows 2003 DC's - both running DNS, there are several Windows 2008 R2 and one Windows 2012 Standard server running as member ...
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2answers
65 views

Domain not resolving from some locations

I need help collecting some sort of proof of what might be wrong here Problem description location 1 Ping <domain.net> Ping request could not find host <domain.net>. Please check the ...
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1answer
852 views

HP Procurve 2920 VLANs with DHCP cannot ping

I have problem setting up working VLANs and DHCP server on HP Procurve 2920. My problem is that I cannot even ping computers between VLANs with static ip addresees. winXP pc on VLAN101 with ...
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1answer
140 views

Server 2012 Can't Ping Local Network

I have four Windows Server 2012 servers hosted on ESXi 5.5. The first one is the firewall box with two network adapters. One with an external connection to the internet, that is shares its connection ...
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1answer
138 views

Linux ping network namespace

I added namespace to my host-machine and made it available by using this: ip netns add h1 ip link add veth01 type veth peer name veth1 ip link set dev veth1 netns h1 ifconfig veth01 10.0.0.1/24 up ip ...
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Oracle GNS (Grid Naming Service) Breaks DNS

Am running a 2-node Oracle 12.1.0.2.0 ASM Flex Cluster using Oracle GNS which I believe uses zeroconf to create it's adhoc network. Before GNS starts, DNS works, i.e. nslookup, dig, ping, ssh all ...
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91 views

One server has multiple IP address leases but just one adapter and no dhcp reservations?

One of our servers' has multiple (10) DHCP Addressleases and I don't know why. The server itself has only one adapter and even if I execute ipconfig /all I only see one IP address defined. Even in the ...
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2answers
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Need to understand : ping

I am using ubuntu 13.10 and I have used ping before to check server is up/down. Can someone help me understand, as I'm unable to find anything explaining this I did the usual ping command ping ...
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1answer
292 views

CentOS 6.5 on Vmware can't ping Host machine

I have installed a CentOS 6.5 on VMware WorkStation 10 all running on Windows 7 64bit, internet is working fine but I can't ping host machine from CentOS vice vers, it tells me Destination Host ...
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1answer
848 views

Can't ping my static IP address from external network [closed]

I have an ubuntu server and a static IP address. When I try to ping my IP static ip from my internal network it work but, when I try from external link remote ping I haven't no response!! #cat ...
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1answer
46 views

Geo distributed ip [duplicate]

When i ping 8.8.8.8 from my home computer (europe) i get around 26 ms latency. When i ping 8.8.8.8 from a server(US) i get around 1 ms latency. When i ping my (US) server from home (europe) i have 130 ...
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1answer
491 views

blocked.domain.gstatic.com - Where could this blocking be?

As of this morning we were having serious issues (partially loaded site with no functionality) accessing Google Drive which we use heavily. Other websites seemed to work fine. This is happening on ALL ...
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2answers
188 views

What would cause alternating “Request timed out.” and “Destination host unreachable.” when using ping command?

I am pinging a Windows 8.1 PC that is currently shut down and I'm getting alternating results "Request timed out." and "Destination host unreachable." What could cause this kind of behavior?
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125 views

Apache Instance in Private Subnet not returning packets

How can we get the Apache instance in a private subnet to work? Configuration Public subnet with 1 NAT instance Private subnet with 1 App instance Details 1. Masquerading is turned on NAT on via ...
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1answer
193 views

Ping fails with the record route option

I'm having trouble with the record route (-R) option of the ping command in Linux. It appears that when I run the command without this option, I am able to receive a response from a range of servers ...
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two different ping results to the same machine, what does this mean?

I am trying to track down a network or possibly server issue, and I opened a ping to the server from my machine. I will generally receive a <1ms response for a period of time, say 10+ minutes. ...
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42 views

site not working for all except me

I have a dedicated server and a domain name which is pointing to my shared hosting. Two days back I changed the name server of the domain name to this server. Till the propagation time i been working ...
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2answers
103 views

PING to my site url returns 100 percent but my site is still up and working [closed]

I've done ping mysiteaddress.com But I get PING mysiteaddress.com (xx.xx.xx.xxx) 56(84) bytes of data. --- mysiteaddress.com ping statistics --- 29 packets transmitted, 0 received, 100% packet ...
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3answers
2k views

Can access website, but can't ping it, nor access via FTP

I'm having a problem connecting to a server by other way than HTTP. Connecting via FTP ends with timeout, as well as pinging: C:\Users\folmert>ping wroclaw-elektryk.pl Pinging ...
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389 views

Ping stops responding after the first line

I have a problem with the PING command on Windows 8.1. During a ping, the command returns no further output after sending the first ping request. For example: ping 192.168.1.200 Pinging ...
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1answer
60 views

Do anycast addresses imply IPv6? [closed]

From what I understand, as a random user on the Internet, you cannot really know if an IPv4 address is unicast or anycast. However if you ping that IPv4 from two hosts physically located on two ...
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3k views

Cannot ping a VM from a Hyper-V host

I am facing a weird situation in my network environment. My infrastructure looks like this: I have a D-LINK DIR-635 acting as my default gateway (192.168.0.1) A physical Windows 2012 Server ...
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1answer
143 views

VM load and ping problems after replacing server motherboard

Recently, we had to replace the motherboard of one of our servers. The procedure was done by IBM as it had guarantee. The server runs ESXi 5.1, with several virtual machines, including our main mail ...
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2answers
341 views

Linux router: ping responses going through the wrong interface

I have a Debian server acting as a router for a small network. It has 3 network interfaces, one LAN and 2 WANs (two different ISPs, let's call them A and B, each of them with a public static IP ...
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2answers
227 views

Bind9 DNS resolves full domain to localhost

I have set up a Bind9 DNS server on my development VM which is running Debian Wheezy. My addresses resolve from my host machine (Win7) to my dev VM, and I can ping from there. Internally on the VM, I ...
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1answer
66 views

How to set up routing tables in EC2, so that ping works

I have a wide open security group which I rely on for instances to be able to connect. I also have a private network of 172.*. addresses, as shown here: What do I need to do in order to allow ...
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71 views

How do I set up Munin to ping all devices in my LAN and alert me if anything is offline?

So I managed to set up Munin, which was tearful because it was my first encounter with Linux. But it now works and generates colorful little graphs. The real purpose of that exercise, however, was to ...
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1answer
67 views

If i can ping a server does that mean it's switched on? [closed]

I think the question says it all, if I ping a server and access it using \server\c$ and get a response does that mean that server is on?
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116 views

Ping through a specific device or peer, BGP vyos

I am trying to figure out how I can compare latency to an end-point between two or more BGP peers. I am running VyOS 1.04 (community vyatta) and was using the linux ping command through command line ...
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78 views

What is causing this seemingly excessive ICMP traffic?

This seems to occur when I initiate a connection to an IP that I haven't previously before. Is this a botnet trying to say hi to his friends? As you can see I have an ip filter set in this image, ...
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95 views

Troubleshoot packet loss and slow transfers on some sites

I need some help troubleshooting a network problem. Home ISP says its the server's network to blame, and host says there's problem on ISP side. With little knowledge, its hard to see where the problem ...
2
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1answer
123 views

TCP traceroute works fine but not UDP

So I ran into this issue where doing traceroute some-server.abc.com returned *** for multiple lines and finally reached maximum hops limit. Doing a traceroute -T some-server.abc.com works perfectly ...
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188 views

Can only ping certain IP's over VPN

I have 2 Draytek Vigor 2830's set up with a IPSec VPN between the two which is working. Yet I can only ping the router in HQ (10.0.0.9) & the IPCortex (10.0.0.2), the outline below might help. ...
3
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1answer
226 views

ping: sendmsg: Operation not permitted (sometimes)

On a Ubuntu 14.04 running Haproxy, after a service haproxy reload, Haproxy is suddenly reporting all servers behind it as down. After some digging around, I noticed that ping is not working properly, ...