Computer Name Returning Address Different To Assigned One
Sep 1, 2011
I have 2 servers. 1 is a terminal server windows 2003 sb terminal server.(working fine) and the other is server 2003 small business DC configured with dhcp, dns, SQL, & wins. Last week one of the network programs that is located on the DC started refusing connections.So doing some trouble shooting I noticed that when I ping the server name I get a local address of *.*.*.42 when the address the machine is assigned is *.*.*.5. When I do an Ipconfig /all on the DC it only shows the *.*.*.5 number. I look in DHCP and *.*.*.5 is reserved for the DC Computer. And the *.*.*.42 isn't even in the address leases. I have also looked through the DNS settings and see no alias with the .42 number. And the number does not show up in the reverse lookup zone either.
I recently switched routers to the DIR-615 and I'm trying to troubleshoot why one of our laptops keeps losing the IP address and gets a self-assigned IP address. I see the following messages in the log, I am wondering if the reason codes are listed and explained somewhere? I tried searching the manual but could not find any information.
I have set up DHCP reservations to assigned IP addresses based on MAC address. I have to block my kids access at times, and when I do this they simply change their IP address and they circumvent the blocking.Other than punishing the kids (which hasn't worked - and they need computers and Internet for homework), is there anyway to lock a computer to MAC address to IP address so if they change it they won't get network/internet access?I also tried to set up network filtering and I put in all the PCs and devices I wanted to provide access for, including the router, but when I save changes I can no longer access the internet or the router. I have to do factory reset to get back into router config.Also, I'm on 1.30WW. I know 1.34 exists, which I tried on a previous router which died and was replaced by RMA; but this didn't solve any problems.
Is there any way to get an ip address through it's physical location? I was asked this by a friend and it's a good question. We know how to get the physical address by it's by coordinates, but is it possible to reverse it, getting the ip assigned to the physical address?
I just rebuilt my network and I've encountered a problem with my wireless access. Right now I have a Dlink 2540B modem/wired router.To that is connected an 8-port Dlink 2208 Switch and a Linksys WRT110 wireless router. All the desktops connect via ethernet to the switch and everything is working fine. I just added the WRT110 and specified it would be a secondary router on the network but as soon as I got it connected it killed my internet. I assumed this was because of DHCP being enabled, which was true once I logged in and looked. I of course disabled it and now the internet is back up on the wired portion and I can connect to the wireless router as well. But the only problem now is that my wireless devices are not being assigned IP's at all. Specifically, my Mac says "airport has a self assigned ip address and will not be able to connect to the internet"How are IP's assigned to wireless devices that connect to the network via a wireless router with DHCP disabled?
configure my cisco 892 router want a static ip address assigned to the interface because and I have no more internet on the router because am working on my network academy for CCENT?
I have a problem with my AIR-AP1041N-E-K9, i do not seem to get an ip-address assigned after a reset to factory defaults.I do see the AP with CDP:
Device-ID: ap Advertisement version: 2 Platform: cisco AIR-AP1041N-E-K9 Capabilities: TransBridge IGMP Interface: gi5, Port ID (outgoing port): GigabitEthernet0 Holdtime: 163 Version: Cisco IOS Software, C1040 Software (C1140-K9W7-M), Version 12.4(25d)JA1, RELEASE SOFTWARE (fc1)
[code]...
I also noticed that when i connect to the AP via console-cable, i can see the AP boot up in the console session, but then i do not get a login prompt, but it seems like the AP is responding; if i shutdown the interconnecting link between the switch and the AP, i do see log messages appearing in the console-connection.I have tried to debug on the Switch, but i need a password, so i can debug, which i do not have.,
We recently implement WLC 5500 Series, I found out guest user once period of that user expired it will not appear at lobbyadmin page where you can see list of users.
Is there any way to see expired guest users and also IP address which assign to guest user?
I've configured vpn ipsec with wizard but my ip address assigned by pool not reach the lan network ,lan network: 192.168.0.0 /24,pool network: 193.168.0.0 /24
I have a Dell Inspiron 530s desktop running Vista SP2. When I attempt to get online using a cable or a wireless USB adapter I get a self-assigned IP Address. When I manually add an IP and DNS addresses I can't get online also. I have removed my security software (webroot) and have disabled Windows Firewall.The same ethernet connection works on another one of my computers fine.
I am trying to setup VLANs and most of configurations are working ok now except IP address assignment from DHCP. If any computer in VLAN 120 or 130 configured with manual IP address, then all works fine. It can reach internal servers and the internet without problem.If the IP address is assigned automatically then any computer in VLAN 120 or 130 are obtaining IP address (strangely!) from VLAN 100. Because switch ports that connected to the computer belongs to VLAN 120 or 130, the computer cannot reach internal servers and the internet with ip address from VLAN 100 . All SVI interfaces for VLAN 100, 120 and 130 have ip helper-address option defined pointing to the DHCP server. No DHCP snooping enabled on all switches at this point. DHCP server have three scopes for the three different VLANs.
We have a Cisco Aironet 1242 AG Series which we are trying to setup. The DHCP assigns the IP address, but we cannot connect to it. We have had this problem with a previous Aironet unit, which this new one we have got now is also having the same problem!Everything seems to be correct, but we cannot get to the IP address to set it up.
I have two offices - see attached diagram. They use 192.168.0.0/16 for private IP addreses.They're connected via site-to-site VPN. Mostly works well, except some traffic doesn't return and I think it's due to NAT?When a workstation in remote office tries to access web servers in the local office which using private IP addresses (e.g. .64.40), traffic never returns. The web servers in question are also accessible publically - the Cisco 1801 in local office has a static route:
The problem seems to be with the local 1801 router. tcpdump confirms that return traffic exits out of ods1's external interface and tcpdump confirms that traffic does not come into remote workstation's interface (neither with .64.40 as source IP nor 111.111.111.2 as source IP)
Remote887# show ip nat translations - none. Local1801# show ip nat translations Pro Inside global Inside local Outside local Outside global tcp 111.111.111.2:80 192.168.64.40:80 192.168.10.254:54990 192.168.10.254:54990
What I don't understand is why a nat translation entry is created. My understanding is that it should only happen when ip packets are sent to 111.111.111.2:80 I don't see that any packets would be sent to this IP address when accessing the site across the VPN - in fact the VPN peer address used is not this one.I cannot figure out why on earth this website cannot be accessed via private IP. I have tried clear ip nat translation * on both routers with no luck.
Relevant Cisco config snippets included below:
Local1801 VPN and NAT config ------------------------------------------ crypto map VPN-MAP 1 ipsec-isakmp description "Local-Remote VPN" set peer 222.222.222.222 set transform-set VPN-TRAFFIC match address 101
My internet link is connected on Internet Router & below downwards Cisco ASA 5520 is connected.ASA is connected with core switch cisco 4510 on downwards. our web based mail [URL] is hosted outside.
Lets suppose ISP pool is 4.4.4.0/28.suppose owa server is Static natted on ASA with 4.4.4.4. my machine traffic is going to internet with same ISP with PAT on Cisco ASA & internet is working on my machine. if i want to access {URL} or ip base for mail access, its not working & also it is not pinging. i suppose to ASA is blocking for returning traffic.
is there any way to traffic will go via same Firewall & comeback on same firewall port?
We have an ADSL connection and use a D-Link DSL-320B modem. We have a D-Link DIR-120 router connected to this modem. This has worked perfectly fine up until today when we disconnected the router and connected a computer (call it A) directly to the modem because it was getting an unusable connection through the router for some reason. We later also performed a factory reset on the DIR-120 router.
Unfortunately, after the above steps the router did not receive any IP address (through DHCP) from the ADSL connection anymore. During my attempts to debug this I noticed that my laptop (call it B) didn't get any IP address either (when connected directly to the modem). I noticed the following syslog entries repeating over and over while trying to connect: [code]
At this point computer A could still get a connection just fine tho (when connected directly to the modem).
I then tried to change the MAC address of the router to an arbitrary one (a copy of computer B's MAC address but with the last digit increased by one). The router still did not get assigned any IP address. Finally I tried making the router clone the MAC address of a third computer (call it C). C has never been connected directly to the modem. Doing this worked. After cloning the MAC address of computer C the router is immediately assigned an IP address and the internet connection works as it did prior to all this.
Now, my question is, why would computer B and the original MAC address of the router not be able to get an IP address while two other computers worked just fine? Why would changing to an arbitrary MAC address not work while cloning the MAC address of another computer did? Could the router's MAC address have been blocked by the ISP for some reason (and what could cause this)?
but my situation seems more like a blacklisting of some MAC addresses rather then allowing just a single MAC address.
I have a HP 6530b Laptop, and on-board Broadcom NetLink Gigabit Ethernet adapter.When I remove my laptop from the docking station, I obviously lose Network connectivity, however, when I replace the laptop back (or even just plug in a cable directly), I cannot reconnect to the network until I reboot.When I open Network and Sharing Center (Win7), and click change adapter settings the adapter is missing from the list (after i have removed laptop from docking station).
All the other switches / routers on quering for SNMP sysName.0 returns their FQDN in our network. The Nexus 7010 and 5020 switches in the network return only their name. "hostname xx" and "ip domain-name xx" defined on all the devices. The SNMP MIB is matching. There are no other SNMP related issues. How can I get the FQDN for these devices ?
$ snmpget -v 2c -c public m-65k-00.core sysName.0 SNMPv2-MIB::sysName.0 = STRING: m-65k-00.core.abcd.com $ snmpget -v 2c -c public m-N7K-00.core sysName.0
when i was on the computer last night, i noticed someone else's address at the upper right hand corner nest to "sign in". The person's address was Jaydogwalker45@yahoo.com. I also noticed a green circle next to the address, so i clicked it and i had the option of signing him out, so i did.
I started my PC (aser) as usuao but did not connect to internet that i am using TP Link modem/router, I turned laptop on and get conected the wireless is working fine, serached about TP links solutions and applied all of them, before I was using "obtain IP automatically" then I used to insert the required IPs manually, applied and save and restarted several times... still cannot connect to the internet while I still connected to the same modem+router via laptop wireless connection,
Finally I decided to format and installed new OS XP, though some wrong error was with my OS, unfortunately even after installing new OS still not able to connect, I checked the IP and tried both options and still cant access, i never experienced such..
I am currently living in student halls, and so far I have been successfully using the halls' provided internet (ethernet port in wall) via a wireless router (belkin wireless ADSL). Until now.I have been unable to connect or the internet either via the router, or by direct connection to the wall.Whilst connected directly into the wall socket via the ethernet cable, my pc still thinks that I am connecting directly into the modem, and still labels the wired LAN connection as 'belkin 54g', despite the router not being connected at all.I have called the technical support for the network, and they have told me that my computer is assigning the wrong ipv4 address, and they had me do a cmd prompt and run ipconfig /reset and ipconfig /renew. This still did not solve the problem, as my PC still tried to connect with the same incorrect IP address. I know the problem is not with the ethernet port or cable, as I have tried in another room that has a working connection, and I still am unable to connect to the internet (DNS error on chrome).
One computer (Windows 7 Laptop) which travels between both locations.Can I or how do I setup a static IP address for both locations on my computer and not have to change settings when I change locations?
Is it possible to obtain details for computers that are connecting to my wireless network? I can see their mac and ip addresses. I want to get details like computer name, operating system and other details if possible.
If my computer was stolen could I locate it using the unique mac address? And is this why burgular didn't take two laptops when they burguled us last night
Tech Support Guy System Info Utility version 1.0.0.1 OS Version: Microsoft Windows 7 Home Premium , 64 bit Processor: AMD Sempron(tm) M120, AMD64 Family 16 Model 6 Stepping 2 Processor Count: 1 RAM: 1788 Mb Graphics Card: AMD M880G with ATI Mobility Radeon HD 4200 , 336 Mb Hard Drives: C: Total - 224515 MB, Free - 125199 MB; D: Total - 13654 MB, Free - 2267 MB; F: Total - 101 MB, Free - 95 MB; Motherboard: Hewlett-Packard, 363F, 42.15, Base Board Serial Number Antivirus: Microsoft Security Essentials, Updated and Enabled
Myself and a friend used to play a game over the internet and join via ip address after a few years and upgrades to windows 7 we decided to do this again problem is we cannot seem to be able to connect via ip address using windows 7 does not even work after using port forward on my machine (host) and disabling firewalls on both machines.
I have 3 Twitter accounts that all work fine on my iphone and my sony experia phone but I can not get into twitter on my home cpu because I cant find the email address that I used to start the account i tell them i lost it so they email it to my email address on file that they wont share. So I need to find out every single email account i have set up in the last 2 years.How do i do that? I tried the option to security to optioms again and nothing for twitter. I need those account on my desk so i can send photos off my hard drive.
Have a computer running windows xp. Whenever I plug in my internet cable it says 'Acquiring Network Address'. I have left it for over and hour but it still says the same thing. I have connected other computers to the router with the same cable and they work perfectly. I have also tried channging the linkspeed for the network connection, renewing my ip address, repairing the network connection and disabling and enabling the connection.
