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

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Ping is happening but arp is not resolved

I am seeing one interesting problem. I have setup two devices connected through lan cable over eth3 interface. Now a vlan session has been created on both the interfaces. Device 2:root@10:~ >ifconfig ...
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1answer
76 views

MIKROTIK - Two LANs connected with switch

I have a very simple network. I have two LAN networks (192.168.2.0/24 and 192.168.3.0/24) connected via a router at each site and the routers are connected via a switch. ...
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1answer
1k views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
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2answers
3k 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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0answers
21 views

Can DNS fail because of a client server configuration? [on hold]

I recently began work in a new environment. The network has many subnets and many nodes with many network engineers who work in the environment. There is a Linux server with Cobbler on it. It has a ...
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3answers
2k views

Cannot ping from a bridged inteface

I am trying to bridge between eth2 and br0 from Ubuntu 11.04 within virtual box. There is network bridging to host physical machine. From the guest OS after bridging I can ping from br0 but ...
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0answers
19 views

PING fails for Windows Server 2012 FQN from a client machine

I have a simple network consists of 2 desktop machines configured with the following ethernet settings; Preferred DNS Server is the IpAddress of Windows Server 2012 R2 machine; My desktop ...
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2answers
30 views

Arp request for a non-existing host in a local network

I'm wondering why I get the following result : if I try to access a non-existing host on my local network, for instance using the command ping, I see with the tcpdump arp command that there is every ...
1
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1answer
47 views

PC's cant resolve the servers name

we've recently upgraded our server and we've been having an issue where the computers can't find the server without me mapping it's IP in the hosts file. They can find it when I fully qualify it with ...
0
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1answer
28 views

Unable to ping second Elastic IP address. Is a separate Security Group required?

I have claimed an additional Elastic IP address and associated with an running instance. It is also tied up with a secondary Private IP Address. I am unable to ping the new Elastic IP address. ...
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2answers
33 views

Can ping server one from client 1, but can't ping client 1 from server

I set up a router on my linux machine as described here. Now I can ping the server/router from my windows client. I can also ping my linux client from my windows client. But I can not ping the windows ...
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3answers
2k views

Sonicwall NSA2400 - No internet access

We've got a SonicWall NSA2400 configured with a LAN (X0) and a WAN(X1) interface. It was setup and working fine until just recently when a temporary worker changed some settings most likely NAT. We ...
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3answers
67 views

how to find proces which is pinging localhost

How can you find the process issuing ping to localhost? While it is not script, where the ping command can be simply grep from process table. I have used wireshark, but it is of no help to find out ...
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1answer
45 views

How to route traffic between 2 VLANs on different subnet

I have the following problem: I have one interface eth0 with IP 172.20.51.61/24 I have configured 2 VLANS on the same machine: eth0.120 : 172.20.52.61/24 eth0.200 : 172.20.54.61/24 I also have a ...
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4answers
1k views

NSLOOKUP and NBLOOKUP give one IP address; PING finds another

In a Windows Server 2008 domain the on-site domain controller serves as both DNS and WINS server. It is also a DHCP server. One workstation is used as a platform for all admin of the various servers ...
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0answers
23 views

ping -a 'myfileserversIP' resolves name of 'mydomaincontroller' which are two different server

Have a strange problem with DNS or Netbios or something: In my Domainenvironment i'm on a domain-joined Windows 7 Client. Trying to do a reverse lookup of the ip of my dedicated fileserver (NetApp ...
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1answer
5k views

Can ping but cannot traceroute from Linux. Can do both from Windows. What gives?

So here's the issue. I have two different computers behind the same network. Both have the same gateway, IP address prefixes, etc. Computer 1: Windows XP IP 192.168.0.15 This computer can ping and ...
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2answers
54 views

Why woud ping fail but not traceroute

For a few days now I started making the interesting observation of a machine intermittently not responding to an ICMP ping, while it still responds to an ICMP based traceroute (specifically set via ...
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9answers
6k views

How to disable responses to PING

I feel like this should be a really simple thing to do, but googling and checking SF I didn't see anything. I'm trying to make my Fedora server not respond to pings, how do I do that?
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25 views

ping timeouts with light http traffic on T1 connection

I have a T1 over copper connection and started to notice that if I run ping while loading an http page (http://google.com) I get intermittent timeouts in ping. Is this normal? I expected some ...
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2answers
53 views

Cannot ping / ssh server after installing VirtualBox on CentOs 6.6 [closed]

Our server was running fine this morning. I installed VirtualBox and rebooted the server. Since rebooting the server I do not recieve a response when pinging the IP address and I cannot connect ...
0
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1answer
73 views

Linux: nslookup and dig resolve $HOSTNAME, but ping doesn't

In our private network we have a Consul service discovery server (10.241.232.14) that provides a DNS interface (port 8600). We would like to set our common DNS servers to forward some queries to the ...
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0answers
22 views

Gateway to internet on CentOS 6

I have 2 CentOS 6 linux servers say hostnames cent001 and cent002 cent001 has 2 Nic's 1 Bridged and 1 Nat cent001 is able to ping google server 8.8.8.8 with the help of bridged NIC cent002 has only ...
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0answers
14 views

410 error when using website validator

I am trying to ping my website http://www.saranshsingh.com/ and it fails PING http://www.saranshsingh.com/ (198.105.254.228): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq ...
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1answer
1k views

Linux network namespaces - ping fails on specific veth

I just started to exploring network namespaces. I try to implement the following simple setting following the article in http://www.opencloudblog.com/?p=42 +--------+ ...
232
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17answers
515k views

Ping a Specific Port

Just a quick sanity check here. Can you ping a specific port of a machine, and if so, can you provide an example? I'm looking for something like ping ip address portNum.
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12answers
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Will a higher bandwidth Internet connection lower ping response time?

It sounds obvious that a faster connection lowers latency... But I wonder: I am working remotely on a host the other side of the world - light can only travel so fast (1 foot in a nano second) and we ...
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0answers
19 views

mac osx ping6 only with sudo?

today I encountered a weird problem on Mac OSX 10.8.5 and IPv6: I tried to ping6 a host that is known to be up and running (I am connected to the host in question through ssh using the same remote ...
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1answer
56 views

Can't access (ping, tracert..) from cmd but works from putty

I am not able to ping or tracert to a remote machine from windows command line, but I am able to ping/tracert and access same machine when using putty on same windows machine. What can I do to access ...
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0answers
70 views

IP ping internally but not externally

Yesterday, my DEBIAN server went down and I have to reboot. After that, several web sites did not go up and I found that 2 IP above 3 do not ping. The main IP still works and attached web sites work. ...
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0answers
70 views

Server doesn't answer to ping just for me [closed]

I can't reach my server by any means on my own IP. But, if I try to connect to the server through a proxy, it's going well. My hosting company says the server is up too. The server is a debian + ISP ...
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0answers
123 views

PING icmp open socket: Operation not permitted in vserver

I am running a vserver environment with several virtual machines. A single VM has the following problem: $ ping 8.8.8.8 ping: icmp open socket: Operation not permitted $ ls -l $(which ping) ...
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43 views

Ping RTTs vs UDP Ping Pong RTTs

Network Topology (wired): ServerA - 1Gb - Switch - 10Gb - Firewall - 10Gb - ServerB Pinging ServerB from ServerA shows round trip times (RTTs) of ~1.2 milliseconds. UDP packet 'ping pong' between ...
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2answers
190 views

Can ping by IP address but not by hostname [closed]

I have 3 Debian VM. 1)DNS 2)DHCP 3)Client DHCP looks ok. I got my fixed-address on DNS and Client like I want. When I try to ping each of them @ip it's responding. If I try to : ping dhcp But I ...
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3answers
433 views

Why is DownOrNot and JustPing reporting that my website is down?

I was pinging my site with DownOrNot and it is reporting that my website is down from all locations. Then I pinged it with JustPing and it is reporting that my website is also down from all ...
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2answers
2k views

Pinging an IP address responds with different IP

When I try to ping the IP address 10.10.208.57 I have no response since nothing exist in the network with that IP address. However if I try to ping 10.10.208.057 instead another IP address responds: ...
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1answer
132 views

Why is ping not returning local DNS cache result? (Using DNS caching server on an internal network.)

Yet another post about this nslookup works but ping does not. I’ve read a handful of forum posts but could not find anything relevant to my setup and problem, of resolving external domain names on an ...
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0answers
15 views

Any tools that can detect if the machine is off similar to Softperfect Wi-Fi Guard?

We have an outage of electricity the other day and some machines (static IP) has been turned off. Because the machines are located in different places is very hard to know. It will be good to have a ...
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0answers
105 views

Can't ping ubuntu server after reboot. Where to look for possible problems?

After restarting my Ubuntu Server I can't ping it. My hosting (Herzner) allows to boot server with rescue system, so I can access file system and try to fix it. The questions is, where to look for ...
0
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3answers
43 views

Ping not answered to hyper-v vw machine and not remote desktop

I got three vhdx files. One for SQL-server, one for AD and the other one is SharePoint. Inside Hypver-v manager, I created three Virutal Machines for those three vhdx files and chose same Internal ...
2
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1answer
298 views

Why does an IPv6 route added before virtual machine is started not work

I have an external server at Hetzner with Debian 7 and trying to setup KVM with IPv6 Routing (the same setup works for IPv4 without problems). I have one Ubuntu Server VM with two interfaces which ...
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votes
1answer
53 views

pingdom sacking my site's resources [closed]

It appears that somebody created a pingdom account to ping my site once a minute, and since my website isn't hosted on a very strong server anyway, those requests get heavy and slow down the server, ...
6
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3answers
1k views

Why would ping give me fast rtt values, but take a long time for each response to come back?

I've got a bit of a basic networking question here regarding ping. When pinging a particular host on a completely different subnet, I get a response like this: PING myhost.example.com (1.2.3.4) ...
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0answers
134 views

NewRelic Availability Monitoring of Third Party Service

Background NewRelic offers availability monitoring whereby you can specify a ping URL for an application and have NewRelic send HTTP GET requests to that URL and GREP the response for selected text, ...
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0answers
125 views

Does a ping to 127.0.0.1 hit the network card? Which RFC / standard states that? [closed]

I recently did an exam where one of the questions stated that you can run ping 127.0.0.1 on a computer to verify if its network card is working. I have already read on multiple sources that this ...
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2answers
84 views

Transatlantic Ping respond times [closed]

Not sure if this the the right place to ask the question. But has anyone had any experience with ping response times or knows of an good to average response time for transatlantic traffic? we have an ...
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1answer
31 views

How can the Windows 7 sees the Windows 2012? [closed]

I have installed a Windows 2012 Standard Server with Active Directory, DHCP and DNS server in Oracle Virtual Box. It has two Network Adapters (Ethernet and Ethernet 2). These Adapters are in same ...
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0answers
111 views

Can ping from PC to cisco router's ipv6 address (from LAN side) but can't ping from one pc to other's ipv6 address

PCs are connected to Cisco switch and up link goes to Cisco 1841 router on router LAN side interface f0/0 ip add: 2001:xx:xx:xx:1000::64/120. IPv6 is not enabled. I am not able to give prefix length ...
4
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2answers
651 views

Faster way to ping URL than curl [closed]

What would be the fastest way to check whether the specified URL is working? (responding in OK http status code)? For now I'm using curl, but I have bunch of URLs to test in a loop, so I'm looking ...
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1answer
19 views

Finding device network disconnection location (which hop failed) [closed]

If you can't connect to the internet and you know the problem is as simple as one of your devices being disconnected along the line which of the following would you use to find out which? You also ...