Duplicate Name Exists Even After Changing Name
Aug 29, 2012
Everyday a few of the computer will error with "A duplicate name exists on the network:" A quick Google search shows the same answer EVERYWHERE on the internet. So I changed the names of a few of the computers too something I knew was unique. Still though the problem persists/ it afters the two XP bases computers the most, but my main workstations (windows 7 sp1) has had this error a few times, although it appears to have left for a while. I have a feenas server but Active directory is not turned on.My router is a e4200. I was using DHCP server on there (and would very much still like to) although I have turning it off, rebooted both the router and the computers but to no avail.
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Feb 10, 2011
Using windows xp. how do i find and delete network name?
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Jul 24, 2011
The company I work for has a small network and it has a windows 2000 server. When the Canon iRC 2880 printer is connected the server gives a error saying that a duplicate name exits in the network. I tried changing the IP address as well. When I changed the IP address of the printer the duplicate IP address moved the new IP address.
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Dec 31, 2012
I am getting very frustrated trying to modify/create ACL's on my SG300-20 switch.I have the switch in L3 mode. I have created several VLAN's and ACL's for each VLAN controlling their access to each other. After the initial setup, I have started trying to create more VLAN ACL rules to allow more access between the VLAN's. The problem I keep running in to is that when I go to modify the ACE's in the ACL, I keep getting the error message "Entry already exists". For example, I go to modify the port ranges to tighten them up, and try to save the ACE after modifying it, and I get that error message.
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Dec 29, 2012
I am the owner of an Asus N53SV series laptop running windows 7 home premium. I factory reset my PC in order to have a "fresh" new year, but now I can only connect to the wireless internet in my house using the ethernet cable. When the cable is unplugged, no networks show up for my laptop. I tried going to this link: ASUSTeK Computer Inc. -Support- Drivers and Download N53SV I downloaded the first wireless driver listed...and it gave me an error that just said "error azureware wireless lan driver"....not a very informative error.
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Nov 27, 2011
I've a router C877 and my provider has changed the connection to vdsl2. I'd like to know if it exists any upgrade of a new IOS for this router to supports vdsl and vdsl2.
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Dec 5, 2011
A network administrator wants to capture some network data. He opens Wireshark software, start capturing, and does the following:In PC-A, runs a command in command prompt. The network admin issues the command and sees there is ping response from the google.
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Aug 14, 2011
Whenever I tried to do backup of CiscoWorks from GUI, I am receiving a error message"Backup failed. ERROR(292): C:PROGRA~1CSCOpx/backup.LOCK file exists, look into the log file C:/PROGRA~1/XCSCOpx/log/dbbackup.log for more details". backup.LOCK file size is 0KB.I am using LMS 3.2; RME 4.3.0;CM 5.2.0
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Feb 3, 2012
ap541n in cluster access point exists a master ?
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May 21, 2013
I am having some question around Prime Infrastructure..Does a general document exists regarding the licensing count of monitored devices ? Indeed I am wondering about the specific points. Is it true that :
- A 3750 stack unit count as one (for example a 4 units stack consumes 4 license) ?
- A WLC (except 5500) does not consume a license but only the Lightweight APs.
- An autonomous AP does not consumes a Lifecycle licence ?
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Jul 11, 2012
I have a big problem with my Cisco 1841 and the WIC-1AM-V2 in Slot 0.I got the task, to test if it is possible, to build up a connection (Dial on Demand Routing) to a remote modem, which is connected to a console port of another Cisco 1841, with the integrated modem card over POTS from the CLI of the router. My router will only dial out to the remote modems and only if its needed.I am connected to the router with the integrated modem card over a console cable on the console port. The remote modem is also connected to the console port of the remote Cisco 1841.
I found out, with my Dialer Profile configuration, it is possible to build up a connection. I configured a dialer list, that specifies that all ip traffic is permitted an interesting for my dialer interface. So a telnet or ping brings up my dialer, which brings up my Async interface. With the "show line" command, I can see that the TTY line, connected with the Async0/0/0 Interface is in use for 5 minutes, because of the "exec-timeout 5 0", which is configured on the remote router. Now the problem is, in this 5 minutes, I can not use a remote telnet on this line with my loopback interface, because the line is already in use and I get a "connection refused". The first telnet I use runs in a timeout, because the remote host is not responding. When I dial out directly from the modem card and not from the CLI with the AT-commands, I get also the connection and with a return i get the login prompt. I will post my actual config, so that you can see maybe a mistake I did or which command I must use, to get a working connection. [code]
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Nov 8, 2011
I'm seeing a TON of traffic in my ASA logs (via ASDM) indicating the following:"Duplicate TCP SYN from inside: (valid internal address of one of our laptops)/50164 to inside: (address on our other subnet, still trying to trace it)/9100 with different initial sequence number"This looks like an attack to me, likely someone's downloaded something they shouldn't have and got an infected laptop. Why it's trying to "call home" to something inside our network is what puzzles me, though.Is there any VALID reason I would see these sort of messages in my log?
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Feb 20, 2011
I'm running web server on Linux Redhat when i run
# /etc/init.d/tomcat status
I got a number of lines:
warning, got duplicate tcp line
warning, got duplicate tcp line
warning, got duplicate tcp line
warning, got duplicate tcp line
Tomcat running in normal mode Also , I can see that Tomcat unstability makes some strange behaviour in the system overall.
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Apr 29, 2012
I have tried changing adapter settings, did the ipconfig /release, renew and still no luck.
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Aug 24, 2012
In case I configure duplicate IP addresses to the same VLAN(two interfaces in VLAN 1100 have IP address 192.168.2.2) I see following ARP messages rapidly(those six messages were received in less than 2ms time-frame)
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Apr 16, 2012
We have LMS 4.2 installed and added devices;Now if for example a device is not reachable we get two messages with same failure ;only the component name is different
- one event with "dns" in component name
- one with "dns(ip)" in component name
dns == hostname
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Apr 3, 2011
I am installing a advance ip service licnese on cisco 861 router but it gives the following error message
Router#license install flash:FCZ143294BM_20110221232946625.licInstalling licenses from "flash:FCZ143294BM_20110221232946625.lic"Installing...Feature:advsecurity...Failed:% Error: Duplicate licenseInstalling...Feature:advipservices...Failed:% Error: Duplicate license0/2 licenses were successfully installed2/2 licenses were existing licenses0/2 licenses were failed to install
Router#
Also show ver shows the following
License Information for 'c860-data' License Level: advsecurity Type: Permanent Next reboot license Level: advsecurity
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May 26, 2013
My customer is seeing these Errors coming up on one of his 2504 WLC's (ver7.3) The MAC's and IP addresses Mentioned seem to be completely fictitious as the customers IP plan is way off these subnets and the vendor lookup tool cant resolve the MAC addresses.I can confirm that there is no conflict.I've seen them appear on other 2504's across his network on seperate occasions.
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Jul 17, 2012
I am having peculiar issue in my setup. I recently replaced my ASA 5505 (8.2.1) with ASA 5510 (8.4.3). Everything works fine for a while suddenly I see some of the servers will not be reachable from the LAN all the servers gateway is my switch. If I check on my Dell switch the particular server's arp entry on the connected port is same as ASA physicall MAC. If im reverting to 5505 ASA everything goes smooth without any issue.
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Oct 17, 2012
I got some issues with my CISCO ASA, the thing is that when I add a new rule on the device this rule duplicate and goes to the bottom. We already tried to delete the duplicate rule but it always show an error.
-Model 5585
-ASA Version: 8.2(5)
-ASDM version: 6.4(5)
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Aug 17, 2012
I have set up LogMeIn Hamachi with my Linux server and a few clients. I have also created a simple shared folder on the server which shares with a Windows 7 machine.
I'm a bit confused though as to where the data is actually stored - presumably, because I have created the folder ON the server, and then shared it with the client Windows - the data is written on the server, and then accessed by the client if opened.
What I want is to create 2 copies, and automatically create a local copy of anything I put into this shared 'network' folder as well - so essentially there will be a folder when I can throw things into that will instantly duplicate (I run backup protocols separately of this).
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Dec 1, 2012
I am using 2 anchor controllers 5508 as DHCP server. Anchor controller A is primary and anchor controller B is secondary. From time to time, client will complain "duplicate IP address error" when they try to connect guest wireless.First question: both anchor controller should have a recorder of IP address which is assigned to each PC, right?Second question: is there any way this type of issue can be avoided?
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Feb 27, 2011
I have a little problem with a Easy VPN, this is the topology:
-One router 2811: This is the Easy-client (Who has a ip address by dhcp)
-One ASA 5540: This is the Easy-server
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Apr 9, 2012
I have just moved to the 3750X switch and have connected it to a 6509E. From the beginning I was having OSPF encryption errors, followed by flood warnings, LSA issue's, duplicate IP's which is baffling me.
There are no IP's which match on either switch however the 3750X was continually power recycling causing the interfaces drop continually.Even after disconnecting from the 6509 the 3750X continue to behave in the same manner. Could there be some issue with this switch?
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Feb 18, 2009
I am getting the following error messge on Cat4500:
Feb 18 23:37:53.098: %IP-4-DUPADDR: Duplicate address 10.237.66.3 on Vlan601, sourced by 001d.096b.4858
Feb 18 23:38:58.092: %IP-4-DUPADDR: Duplicate address 10.237.66.3 on Vlan601, sourced by 001d.096b.47ed
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Mar 17, 2010
First here is our network breakdown
8 Windows 2008 Servers - UN effected
5 Windows 2003 Servers - effected with dupe IP's
We have AP - A, B and C all configured static and outside of our DHCP scope
A - 104.240
B - 104.241
C - 104.242
WAP A is setup to allow the Mac's of A and B to repeat its signal. The issue starts about 1-2 minutes after I set B and C to client/repeater and select A in site survey then save the settings. Obviously its weird that only our 2003 servers are getting this error.
The system detected an address conflict for IP address 192.168.105.201 with the system having network hardware address *MAC ADDRESS OF ROUTER A*. Network operations on this system may be disrupted as a result.
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Mar 19, 2012
I have a duplicate router ID problem that is confusing to me. A 6509 and 4510 swich both show the same router ID, but only the 6500 has the router ID IP address configured in it. We are running EIGPR. The 6509 has L0 as 164.72.239.1 configured, which is it's router ID. The 4510 doesn't have 164.72.239.1 configured on it, yet that's what it's router ID is. Below are a few show commands displaying this - and as you can see from the 'show run | include 239' from the 4510 there is no 164.72.239.1 configured on it:
6509 chassis
interface Loopback0ip address 164.72.239.1 255.255.255.255end
RS6509-Core-A#sh ip eigrp topIP-EIGRP Topology Table for AS(1)/ID(164.72.239.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply, r - reply Status, s -
[Code].....
why the 4510 has that router ID?
I know I can configure a different router ID on the 4510, but I'm curious as to why it is the way it is.
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Mar 14, 2013
I have two 2960's in this new environment that I am administering. I am receiving a message on one unit (Designate it 2960-2) of %IP-4-DUPADDR: Duplicate address 192.168.168.8 on Vlan1, sourced by 3037.a63e.540. The "sourced by" address is the 2960-1. I do not know how these units were originally set up. How can I determine where the duplicate address is originating from.When I perform an ARP -a the address that corresponds to the 192.168.168.8 is the mac address of the ethersvi interface on the 2960-1. I
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Dec 17, 2011
I am using LMS 4.0.1 to monitor the data center network devices. I have two core switches, each core switch has an ACE module installed on it. I have configured many virtual context on each ACE module, and these ACE contexts are acting as primary and standby roles. The problem i faced with is LMS reports the virtual ip address configured on each ace context as duplicate ip address, and i didn't know how to deal with it. As to my understanding, this should be the normal behavior due to my setup, but how can i remove this alarm on LMS 4.0.1?
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Mar 21, 2013
I have a setup where a spoke (cisco 1841) is sending a multicast feed to a hub (cisco 2951) via a DMVPN tunnel on the Internet. The feed arrives on interface fa0/0 of the cisco 1841 and is forwarded to the tunnel interface. It is about 160,000 kbit/s and 18 pps. This always looks the same:
cisco2951-1-hub#sh run int tu10
!
interface Tunnel10
description DMVPN TUNNEL
[Code]...
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Apr 30, 2013
ISE 1.1.3
Cisco 3750 switches
Windows XP / 7 / 2008 clients
I'm having some weird issues were if a client connects to a switchport and happens to be using a static IP address then the client warns of a duplicate address problem. Also the client will then only show the default gateway within ipconfig even though the IP address / mask is still in the GUI network properties of the adaptor. This is happening with Windows 7 and Windows 2008 devices.
Windows XP clients don't get the issue.
Some clients will use 802.1x native supplicant and some will be authenticated based on MAB. Not noticed the problem with 802.1x clients but it always occurs on MAB.
I came across a similar issue here: URL
Going of that blog I tried using the "ip device tracking delay probe delay" command but the switches don't recognise the "delay" keyword.
The switches are 3750 switches running version 12.2(58)SE2.
All I have is "count, interval, use-svi" as extra options.
Catalyst 4500 switch guide has "delay" option but no "count, interval or use-svi".
The only way I have managed to avoid the problem is using the second solution which is a registry hack on each client. This is fine for the odd server but not realistic when there will be hundreds of other clients.
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Feb 24, 2013
Trying to apply this config to a 2900 router and getting this error message. [code] This works ok in in a 2800 router using 12.4(25d) spservices IOS
Not working on 2911 using 15.2(3)T2 ipbase image.
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Apr 5, 2012
We've had issues with our Exchange 2010 server (running on ESXi 4.1) since its default gateway was changed to our new ASA 5510. They manifested as frequent Outlook client connection dropouts or as IP address conflicts whenever Exchange was rebooted. The temporary fix was to disable the Exchange server NIC, bounce the ASA and enable the server's NIC again. We saw poor performance from Exchange after a while again, but after some research and testing I realised that disabling proxyarp on the inside interface fixed the problem permanently.
However I've now realised that the client VPN no longer routes properly because proxyarp is disabled on the inside interface, so I still have a problem.
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