Hostname Is Resolving The Wrong IP Address
Aug 31, 2012
I am having trouble with getting a copier that I have networked to stay registered in the system. When connecting all the equipment back for the new year I was having trouble getting this one specific copier back online properly. I used to have it assigned with a static IP because the person that was here before me had all the computers map the printer using the IP instead of Hostname but that was causing IP conflicts so I removed it and mapped the printer through Hostname which is made "MPF-TOSHRM328"So now for the actual problem, after the copier got the new dynamic IP of 10.8.214.151 i thought it would be fine and everything would click in because it was mapped to the host name and not the IP. But when I do a tracert on the hostname it still shows up with the old IP. and now that the old ip has been reassigned it actually points to a physical machine now. Weird. All attempts to flush the DNS have not resolved the issue. I even tried going in and deleting the entries in manually. No luck. As a point of reference here is the result from the tracert.Tracing route to MFP-TOSHRM328.78B450.nycboe.org [10.8.214.126] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms SLS330W09 [10.8.214.126]Trace complete. I should also mention that this server is only here in the sense that it is the DC for the computers on this floor. There is a whole other system that assigns the IP's and handles the DNS. I do not have access to it, it is run by the main network people at the central offices.
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Dec 8, 2012
I have a small workgroup at home of about 4 or 5 computers. All the PC's, notebooks are running W7. I have one PC that I use as my "always on PC", with all my media and resources I use on it. The NetBIOS or computer name assigned to it is mediapc with a static IP of 192.168.254.150. All my other desktop PC's, excluding the notebooks, have a static IP also.The problem is more annoying then anything, and thus I only work on it intermittently. Today I decided to post after wasting much of another day attempting to resolve the issue.The problem is accessing my mediapc from any of my other computers while using the computer name, "mediapc". If I use the static IP assigned above, there is no problems. Everything works, RDP, Dameware, Telnet, SSH, Ping,Tracert, etc. If I use the computer name "mediapc" then it fails with an unreachable host error or similar. The reason it fails is because somewhere in my network or in the mediapc itself, it wants to resolve the "mediapc" name to an unknown IP of 192.168.254.47.
Now with this said, I can still share files and access the mediapc using the name in a UNC syntax, like //mediapc/data works fine or directly clicking on the mediapc share under Network works also. If I Ping mediapc from any other PC than itself, it fails with the 254.47 IP. If I try to use any remote connection software and use the name mediapc, it fails to connect.This is what I know and have tested:
1. Adding a host entry to all the client computers works but does not fix the root of the problem.
2. nslookup mediapc reports the wrong IP of 254.47
3. Remote connections as I mentioned above fail because the name is resolving to an invalid IP.
4. Pinging mediapc from itself, displays the correct IP of 254.150, although I have to use the -4 parameter.
5. Arp -a on all PCs report correct IP of 254.150 with the correct MAC address. (There is no 254.47 listed)
6. NBTstat -a mediapc reports correctly and shows the correct MAC address.
7. Network shares work correctly from and to the mediapc without issue. No access problems.
8. I have deleted all arp entries and flushed the dns with no change.
9. MS mentions to change order of the Bindings of the adapters, yet I only have one Local Area Connection.
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May 2, 2012
how to get the Computer name of any computer on the Network by using its MAC Address. I am really in need of it
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May 15, 2011
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May 15, 2012
I want to know IP address ,If I know hostname {OR} I need to know hostname,If I know IP address.
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Aug 6, 2012
we use LMS 4.2.1 and we noticed a strange behaviour when starting a discovery. From aprox. 160 devices some devices are displayed as IP Address instead of hostname. Every device is DNS resolvable and has a value for "hostname". I´ve tried every possible option in the global discovery settings but some devices have the IP instead of their hostname. how to fix this?
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Mar 1, 2012
Is it possible on an ASA 5500 device to connect an IPSEC tunnel via hostname instead of the IP address? I have a site without a static IP address that is currently connected via Easy VPN but I want to change one of the sites to a regular IPSEC site to site as one side, the one with the dynamic IP, is being changed to SonicWALL. I will have DDNS setup on the site with the SonicWALL so I want to know if I can point the ASA device to the hostname instead of the IP.
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Jul 16, 2011
I have a 2003 server that is doing something wrong. When I show the mac address table I can see that the server is assigning a bad mac address to several IPS. The server assign a non-existent mac address to some IPS for this reason the server stobut I would like to solve the problem
- I ran my antivirus an no virus was found.
- I updated the network driver.
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Jun 21, 2011
i have a cisco router that has dhcp configured, the router ip address is 10.10.10.***. all computer that attached to the router are using static ip and works fine but when i am connecting my laptop using wireless in gets an 192.168.1.*** address.
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Mar 23, 2012
Do not have internet connectivity, despite all the lights lit on calbe modem and the ASUS WL520GU router and only the internet and ethernet lights are lit on the Linksys 2102.Despite numerous reboots, no change and even bypassing the router and connecting directly to ATA still no conectivity.When I open a browser, it reverts to the Asus error page, "reason for failed connection: You have set the wrong dynamic or static IP address, though nothing was changed.Funny thing again, a direct internet connection to the ATA did nothing.A google search only just shows lots of unasnered posts on this issue, or only the usual 'please reboot'.
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Nov 2, 2011
I have an application for work that I need to access true vpn connection :I have Sbs server 2008 with vpn support , I can access my folders and exchange and ... , this works fine.Now I have an application that search to connect to the server via local ip at work but when I use vpn to access it then the application goes searching on my local ip adress and not on the vpn ip adress.vpn has same ip as local ip at work).Now my question is: Can I set the application to search on the range of my vpn connection instead of searching on my local ip when i am not at work but on a different site ?I tryed almost anything but the application still looks directly on my local ip instead of the ip of my vpn
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Mar 23, 2011
I have tried to search for an answer on the forum but I cannot find the correct answer to my issue. I'm having a problem where my dir655 updates the wrong ip adress to dyndns server. It always report 255.255.255.255. The dyndns information is all entered correctly and says "connected" in the dyndns configuration. So what is wrong with the adress update from the dir-655 to the dyndns server ? Of course I cannot use my dyndns adress since it is always at the wrong adress.
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Mar 30, 2013
I have an Amilo Pa1510 (Windows XP) and I can connect to the router but not surfing (browser doesnt load any website). I have tried the commands "ping" to my IP address and it works but ping to the default gateway IP address doesnt work either.I am using the same wireless connection right now with my smartphone. I have downloaded an app that executes the ipconfig command in my Android. I have used the same gateway IP address in my laptop but it didnt work either. I have tried to set automatically the IP addresses in my laptop without success too. I have turned off and on both laptop and router and also checked in the system window that all the processes such as DHCP and DNS servers are automatic and enabled.
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Sep 3, 2009
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Jul 29, 2012
I think I'm missing a basic step here. In setting up a RV220W device behind either a cable modem or a DSL modem, the address that is being returned is not the public IP address of the modem, but rather the private IP address assigned by the modem to the RV220W. Doesn't matter for normal web access but trying to set up a VPN tunnel fails due to the inaccurate IP address.
If I do the same thing but use the dyndns.com application on a computer behind all of this (connected on the private LAN of the RV220W via cable), it reports the external IP address correctly. That works in some locations if I have an always on computer to load the application to. In some cases, however, there isn't such a computer to leave dedicated to running the separate program.
Since this works, and the RV220W doesn't, there is some difference between the Cisco implementation and the dyndns.com implementation.
So, is there a way to get the RV220W to return the true external IP address, or is it stuck returning a private address?
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Jan 9, 2012
Frameware version: 1.0.03.
Environment: Internet (external IP say 24.x.x.x) ISP provided modem+router (192. 168. 1.x/ 24 IPTV network) E4200 (192.168.0.x/24 my home network).
The DDNS option page did report update succefully and shown the external IP address correctly on the page, however when I login to dynDNS it shows 192.168.1.x, which is the E4200 IP dhcp from the ISP's router.I know that it's double NAT, but the 192.168.1x/24 subnet is the IPTV subnet, and my old Dlink router did support and update the dynDNS entry properly.
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Mar 29, 2012
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Dec 22, 2012
After upgrade to 9.0.1 from 8.4 I have problems with reverse dns resolving, like this:
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Apr 21, 2011
I was thrown into trying to fix a friends pc being told that the internet wasn't working.What I've found through some messing around is that I am able to pull up websites with the ip address but trying to use the domain name give a "Host Not Found". Similar error when trying to do a ping. However doing an nslookup will pull the ip's for a domain. I've done the dns flush, the netsh commands that are floating around to no avail.
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Nov 28, 2012
I've just installed a 2504, upgraded the firmware so that 3602i ap's can attach. As a test I left the network open and am running dhcp from the 3560 switch. Why am I unable to ping or connect to a device by name within the same subnet on the "wired" network? There's no DNS server.
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Dec 1, 2008
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I have the firmware 2.0.02_11 installed. Hooking directly up to the modem, I can resolve entries consistently. When I plug in the router, it works for a little, but becomes very unstable after some time. I spoke with support about this and they suggested changing the IP of the router, as well as lowering the MTU to 1400. Both did not improve stability.
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Nov 29, 2012
I'm setting up a site-to-site VPN with an RV082 ( and an RV042). The RV042 is behind an Actiontec modem/router that has the local public IP address. So, this address is registered with dyndns so we can find it with a name.
The name is entered into the RV082 VPN Remote Group Setup as: Dynamic IP + Domain Name (FQDN) Authentication The given name for the dynamic IP is entered into Domain Name: But, in the summary, the entry for the Remote Gateway shows only the name and 0.0.0.0 for the IP address.
This same RV082 can get the same IP address from a ping of the name just fine.
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Jan 16, 2012
I have a e4200 sitting behind a BT home hub 2. The home hub provides internet connection to the e4200, and the e4200 allows all devices to connect. I am able to ping internal IP addresses, but when I try to ping by device name it returns the external IP address. How can I view / amend the DNS table on the router?
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Jan 10, 2012
I am attempting to port-forward on an ASA 5500 to internal host .100. The outside interface recieves its IP via DHCP. Packets are being denied so I ran packet-tracer and get the following error from outside to ssh port on internal host.
#packet-tracer input outside tcp 79.x.x.x 1025 71.x.x.x ssh
Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
[Code]...
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May 20, 2012
I'm having with my VPN Server on my Cisco 2621xm.
I started by creating a VPN - everything worked great. I assigned the DNS Servers, Domain name, WINS Server so when I connect I'm able to resolve local hostnames on the network with no problem, however, I had no internet access... I then set up a split tunnel access list. Since I've set that up, I'm now able to ping internet based addresses url... but no longer able to resolve internal host names. I can ping the ip addresses, just name resolution no longer works. [code]
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Aug 14, 2012
I am having a very strange issue with connecting new machines to reach the internet.We have a ASA 5505 which the previous tech configured the DHCP pool to 192.168.1.60 - 192.168.1.110
We ended up reaching our limit which I changed it to: 192.168.1.60 - 192.168.187
Then next day when I arrived to work, our DC was hung from windows updates. Once we got everything back up, every computer currently on the network can reach the internet/VPN tunnels etc. So (continuing with my day) I created a new server in a VM (Hyper-V)I can ping everything internally (even the router) 192.168.1.1, but I cannot resolve DNS. I have configured a static IP, tried Dynamic IP.I have looked for any ACL indicating to block outside the range of the old DHCP pool but no luck.On my local maching I can ping the DNS addresses, but just not on the new server.
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Jan 30, 2013
Region : UnitedKingdom
Model : TL-WDR4300
Hardware Version : V1
Firmware Version : 3.13.23 Build 120820
ISP :
Region : UnitedKingdom
Model : TL-WDR3600
Hardware Version : V1
Firmware Version : 3.13.23 Build 120820
ISP : BT Infinity
I am running a Windows Home Server machine called "mserver" that has an IP address supplied via DHCP.There is also a local webserver running on port 8089 that I use to access media from several devices (Android Phone, Blackberry Playbook & HP Touchpad...i.e. not Microsoft).When I had the BT Homehub3 in use I could access the webserver via http://mserver:8089 and it would be loaded on all devices. With the WDR3600 used in place of the Homehub3 it cannot resolve mserver into a local IP address on a non windows device. I can access it via http://192.168.0.xxx:8089 so the route is there.Does the WDR3600 have any local DNS resolution? I repeat the BT HomeHub3 CAN do this, so why can't the TP-LINK?
P.S. I have tried :-
Disabling hardware NAT
Turning off UPNP & Port Forwarding
Restoring to factory default
Disabling all ALG's in security
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Jun 27, 2012
I have Windows 7 x64 on my desktop, laptop, and HTPC. The past few months, everything worked fine. Today, I can ping my IP address but I cannot ping the host name on all 3.They also do not show anything in the network window, just the computer that I'm on.
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Sep 5, 2012
We have one business application, accessed across GCC region by having a single entry with individual computer hosts file, ie123.123.155.116 myappl.mycompany.com and other than Bahrain, all countries are able to successfully resolve the hostname (application only works against hostname (Oracle EBS)) against this entry with the hosts file. Now, prior contacting the ISP in Bahrain (where internet is regulated due to the current political situations) we need to know whether anything could be done from our end to resolve this issue.
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Dec 12, 2011
I manage the network of a small (120 users) network spread out over 5 sites within a 10 mile radius (for normal ops- extended ops can expand to include other cities).I think I'd call that a Campus LAN, perhaps it's just a really small MAN (for normal ops)...I am starting my CCENT/CCNA track so this may be blazingly obvious to some of you- but I'm sure to learn something either way...Every now and again we have to go find "hostname "X"" for an update that won't roll out by way of our (Server Sr SysAdmin's) tools, so we actually have to put hands on it. Unfortunately the prior admins didn't document the inventory to such a level that we know "laptop_015" is in the building down by the college.
I DO have documentation on my equipment (I'm the Network Sr SysAdmin) that I have rolled together over the last 9 months being here...I have a Cisco 5520 ASA, and use ASDM to manage it. What would be extremely handy would be the ability to put a query in the system to report back what switch a given hostname is plugged intoBetter yet, if it could tell me switch and switchport.I imagine this would be simple if I had the MAC address- there's got to be a way to grep the switches for a given MAC- but not sure if it'll work in a similar fashion for ARP lookups.
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Aug 6, 2012
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Feb 10, 2013
Our Cisco team does inventory pulls with CNC and i was informed that this uses the hostname field currently the report pulls the IPadress, the discoveries that run on the LMS populates displayname field and puts the IP address in the hostname field. is there anyway to update this via query or process, i have too many devices to manually update this.
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Jun 21, 2012
I'm trying to use MRTG and SNMP on a Windows Serveur 2008R2.I want to manage my Switch with mrtg, but it don't show me which computers or server are connected to the Switch's ports.All I have, in the .cfg file is the interface name ( like S0/0 ), which are useless for me, I would like to get IP adresses or hostname but mrtg doesn't seems to do it.Any of you know if Mrtg can do that ? or maybe there are some others ways to do that ?
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