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

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566 views

What is the maximum normal latency for internal gateway switch?

I've been observing the ping latency to my server's internal gateway switch from my server machine. I noticed the ping spikes to as high as 500ms at times. Is this a possible indication that the ...
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2answers
519 views

Web Server Can't Ping to Outside/External IP's

I'm having this problem. I'm trying to connect to my datacenter, and It seems that my webserver can't ping to my router, and even can't ping to others pc in my network. Well, I'm new in this ...
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6answers
3k views

Ping based Windows monitoring dashboard

I have 3 servers that I need to (visually) monitor all the time. Currently there is a "method" using 3 ping -t processes running in separate command prompt windows and I am trying to replace it with ...
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0answers
191 views

DHCP gives a 0.0.0.0 subnetmask

I have a fresh Windows 2008 domain with one DC (DHCP, AD, DNS, WDS). Everything worked fine yesterday at the implementation day, but this morning all hell broke loose. Some workstation coudn't ...
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2answers
439 views

Why do I get search.com instead of “host not found”?

On my VPSs with LeaseWeb, whenever I reach an non-existent host, I get search.com domain name, and if I ping a non-existent domain from SSH, I don't get "host not found" but replies from IPs like ...
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1answer
467 views

VMware Host-Guest intermittent communication on bridged mode

I'm running 2 VMs (Unbuntu & Ubuntu Server), both of them are on bridged mode. The host is a Win7 running VMware Workstation 7. My purpose is to set up a PostgreSQL server on the Ubuntu Server VM, ...
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5answers
4k views

Ping Linux server by hostname inside Windows network?

Can anyone point me in the right direction on what should i do in order to be able to ping a linux server from inside a windows network (with a domain)? I've searched on google and found several ...
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2answers
5k views

Why can't I ping my server?

I am logged onto my Windows Server 2003. I am trying to ping another server that is Windows 2008 by using the command promt and putting in the ip address that I had given it. For some reason it seems ...
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5answers
2k views

Can't ping one server of two by name, but can ping both by IP

I have two database servers where I can ping both by IP, but can only ping by name for one. The setup: Server1 - Original Data Server2 - Receives data from Server1 through replication Server1 can ...
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2answers
2k views

Cannot ping linux (RedHat) machine by hostname

For some reason, a linux (RedHat) machine that I have is not ping-able by hostname! It is ping-able by IP address though. I have the same network configurations as another linux (RedHat) machine ...
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12answers
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Is Ping a reliable way to check if a server is available?

In my application I am pinging a server and waiting for a response. I am using this to determine whether the server is available and responsive or not. Is this a reliable way of determining ...
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1answer
510 views

can't ping/ssh new libvirt instance

I have a working virtual host that was Ubuntu-Server Lucid (10.4). I've been using it for a while and has several functional guests created on Lucid. Today I upgraded to Maverick, then to Natty ...
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3answers
3k views

How does ping work when a host name has multiple ip addresses?

For example, google.com has at least these ip: 74.125.225.49 74.125.225.51 74.125.225.81 Does ping just pick one of them randomly?
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2answers
2k views

ping fails but ssh succeeds

I'm facing a situation where one app(using ssh) can connect from Machine A (Linux) to Machine B (windows), whereas Machine A cannot ping Machine B. Another app on Machine A which connects to Machine B ...
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3answers
394 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: http://www.downornot.com/qweop Then I pinged it with JustPing and it is reporting that my website ...
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2answers
534 views

Client can't ping server untill server has first pinged client?

Problem: Client computer can't ping server until the server has first pinged client. If I stop pinging the client from the server, the client will no longer be able to ping the server. Does anyone ...
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1answer
2k views

I can't ping my gateway, but I can ssh to a remote server. Why?

I'm trying to configure my dorm room network. I'm working on ubuntu. It seems that the dorm building has a host as gateway 192.168.22.254. My route -n looks like this: Kernel IP routing table ...
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1answer
253 views

What should I do after traceroute?

I have a problem that my server (CentOS 5) cannot connect twitter.com. I've used traceroute command like this: traceroute twitter.com -d -I and I got the following lines: traceroute to ...
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2answers
135 views

measure server speed and deduct the network latency

I want to measure the login via htaccess to some servers (how fast is processed by the server) and I want to ignore the time lost on the newtork. So should i deduct the ping latency once or twice? Or ...
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1answer
989 views

I can't ping from my server to google.com, how can I diagnose issue?

I'm on my server and I can't ping anything outside. I tried for example google.com. How can I diagnose this issue? I can ping my localhost (ping works) This is my traceroute to google.com: ...
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3answers
438 views

What are the proper contents of an ICMP message? (Buffer, Don't Fragment, etc..)

I'm creating a Tracert program and am wondering if the value "buffer" used in the Ping payload really matters. Can it be anything, or do routers respond differently based on the contents of the ...
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1answer
146 views

Security settings * differences between cmd.exe window and IE

I plan to retrieve an rss file (xml format) with url http://alerts.weather.gov/cap/ma.php?x=0 from a web site periodically with a scheduled task. I have a php script to do that. When I access the ...
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1answer
277 views

ping6 overhead compared to ping overhead

I am testing IPv6 latency from a Linux box, and I noticed this weird difference between IPv4 ping and IPv6 ping: # ping -n -A -q -c 500 speedtest.steffann.nl PING speedtest.steffann.nl (10.3.10.20) ...
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2answers
3k views

Can ping an ip but does not show up in netstat?

I was wondering if someone would be able to help me with a head scratcher. We have a device that has communicated with our server but is not sending back any data. I am able to ping the IP address ...
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1answer
961 views

I'm trying to make a batch file that will ping multiple IP's and return the results in a text file [duplicate]

Possible Duplicate: Batch file to MASS ping group of computers on network by name, check reply, and resolve hostname I am trying to ping many IP's at once and to date it's been done ...
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6answers
684 views

ping response time

I have two sites hosted on two different data-centres. Recently one site has become very slow. The ping response from application server to DB server is not fast enough. How do I investigate the ...
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3answers
3k views

IP address of virtual server?

I have a virtual server (shared hosting), with a domain name (and several sub-accounts, each one a separate site also with its own domain name) I was wondering if there was a way to find out the IP ...
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1answer
278 views

Can only rdp or ping to Windows 7 machine intermittently

We have a Windows 7 machine that we can only intermittently rdp into or ping. We have tried this from several different machines and run into the same issue. We discovered if you reboot the problem ...
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4answers
178 views

Monitoring service that can run scripts

I'm currently using New Relic's performance monitoring service. Works great so far, except that I'd like some things automated. I basically just get an email notification when performance is bad or ...
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0answers
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Unable to ping through gre tunnel

I have 4 machines machine 1 has ip address 172.13.0.40/24 machine 2 has two ip address 172.13.0.1/24 and 172.12.0.1/24 machine 3 has two ip address 172.12.0.50/24 and 172.17.0.1/24 machine 4 has ip ...
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2answers
225 views

Can ping by IP, not by domain

I have an Apache2 web server with vhosts at 173.xxx.xxx.xx1, listening on port 80 & 443. One vhost I'm trying to access is dev.REDACTED.com. I can ping the IP of the server: ~: ping ...
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cannot ping through gre tunnel

This question has been merged I have 4 machines machine 1 have ip address 172.13.0.40/24 machine 2 have two ip address 172.13.0.1/24 and 172.12.0.1/24 machine 3 have two ip address ...
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11answers
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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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2answers
750 views

Ping with long delay but short reported time

What does it mean when a ping reports a reasonable time (~10ms) but actually takes quite a long wall clock time (~15 seconds)? (Additionally, passing the -U option for "full user-to-user latency" has ...
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6answers
4k views

Intermittent high ping/latency problem

I have been working with my ISP (which is a WISP, actually Fixed Broadband Wireless) trying to figure out why I intermittently get high latency. The latency is detectable in online games and other ...
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1answer
227 views

Can't connect to server, others can

I've set up a Webserver(port 80) and a Minecraft server. Me and my friends play on this server regularly and haven't had any problems connecting before this. Now, one friend complains about not being ...
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2answers
2k views

Configure static IPv6 on Ubuntu

I'm trying to configure IPv6 on a dedicated Ubuntu server. My provider gave me a "/64" (whatever that is - I'm still confused) of IPv6 addresses. However, when I try to use them, I can't ping ...
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votes
1answer
1k views

What do the RTT numbers mean in a TraceRoute result?

I have this traceroute result, and I am wondering what EXACTLY do the 3 numbers mean at the end of each line? I assume they are ping times, but what exactly is the difference between each number? 1 ...
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2answers
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DNS can't resolve hostname; nslookup can

I have a user on Windows 7 that is trying to access a local server with a DNS name of windows.cs. We have two internal DNS servers. The DHCP server assigns users the two internal DNS servers as ...
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4answers
439 views

Difference between a ping and a GET request? [closed]

What is the difference between a ping and a get request? The goal is to see if the site is up.
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2answers
85 views

Know about pinging

How can I get know that somebody was pinging my computer in various operating systems (Linux, Windows). Are there some system logs recording such event?
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1answer
11k views

My server is working fine, but I can't ping it

I noticed earlier, one (of many) of our EC2 instances doesn't respond to ping requests. Everything else runs fine, SSH, HTTP, FTP, Database all working perfectly, but ping fails. This instance is ...
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2answers
3k views

Nagios bizare ping behaviour

I have nagios setup as I want it, but last night it started alerting me of a problem pinging the internet. (I have a check that pings www.google.com to test that the internet is still working) Now ...
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1answer
89 views

execute command on icmp request

I'd like to know how/if it is possible to get my linux (ubuntu) box to exec a command (script) on incoming icmp/ping (or other network events) requests? Like e.g. playing a "ping" sound when being ...
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6answers
6k views

Network latency: 100Mbit vs. 1Gbit

I have a webserver with a current connection of 100Mbit and my provider offers an upgrade to 1Gbit. I understand that this refers to throughput but the larger the packets, the faster they can be ...
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2answers
12k views

Can't ping host from vmware guest using bridged networking

Host is Windows 7 Guest is Ubuntu 11.04 Network adapter is wireless I can ping other computers on the network but not the host. No firewall are involved. Sniffing the traffic with wireshark it ...
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1answer
507 views

High ping everywhere except one PC

I have a network with a really high ping (usually more than 500ms) except for one laptop. And in that laptop the ping is usually 5ms. I've tried: - using same model laptop - compare lan driver ...
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4answers
808 views

How can I establish if a 566ms average response time is any good for my server?

One of my servers averages 566ms response time as measured by Pingdom ( pingdom.com ). Is this a good score? Should I be doing more to optimise it?
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3answers
3k views

Ping returns different results if asked ip address or hostname

Alright, I've got an irritating problem. When I ping one of the servers in my company with ping 192.168.1.62 I get my box ldmmit1 as the result. But when I use this line ping ldmmit1 I ...
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3answers
6k views

Ping from specific network adapter on Windows

Hey, I've been troubleshooting network issues on servers with 2 NICs and laptops with wired and wireless cards. How can I force the PING and TELNET to be sent from a specific adapter? I know it's a ...