Cisco :: Windows 7 2008 Duplicate Static Address When Using 3750
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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Oct 23, 2012
I have some question about HSRP in 3750 switch. I have two Cisco 3750 switch which configured HSRP. Let say, we have interface vlan 100 that join in HSRP group member 1. The configuration on both switch is like as follows :
SWI-3750-A (Active)
==========
interface Vlan100
description *** gateway User NPL ***
[Code]....
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Jun 17, 2012
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Apr 2, 2012
why Windows Server 2008 is not a supported OS for Cisco Network Assistant?I am currently evaluating switch management solutions for use with Catalyst 2960 and 3750 series switches, and would like to be able to backup and restore configurations, as well as make configuration changes. My management Server is running Server 2008.Is Prime LMS my only option?
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Jun 10, 2012
I've had the same IP address for years and want to change it to a new one - I have a dynamic IP but for some reason it will never change.It looks as if it's always static-what settings I need to change on Windows 7 to get it to roll over onto a new IP address?
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Oct 24, 2011
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Sep 10, 2011
I am trying to set up a static IP address for my Toshiba Satellite L350 Wireless Laptop on Windows 7. My Broadband is on TalkTalk (UK) Huawai Echo-Life HG520b. I tried many sites but it never seems to work.
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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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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 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 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
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Apr 5, 2012
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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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Nov 2, 2011
I install virutal machine "VMWare Workstation7" on windows 7, i am mcitp student for practice i am using windows server 2008 on VMWare, but i can't assign static ip whenever i assign ip it show no access to the internet?
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Sep 19, 2011
Recently I had came across 1 issue where one of the server IP had conflicted with VIP of Nexus core switch. The blade server was physically connected to Nexus Distribution switch which in turn connects to Nexus core. Neither Nexus core nor distribution had generate any logs in regards to IP conflict which ideally happens on Cisco catalyst switches. I haven't find any document on cisco as well as on internet for this issue . I dont know what logging need to enable on Nexus for this specific case . There are different logging levels define for every feature like hsrp, ip,monitor etc...
We have Nexus 7k with latest release 4.2(6) Software
BIOS: version 3.22.0
kickstart: version 4.2(6)
system: version 4.2(6)
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Oct 9, 2012
I have a static ip , So how co configure my server 2008 for the access from internet [URL]
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May 11, 2010
I've run in to this on 3750G's in a various sized stacks. We apply port security for a mac address on a single port (not existing on more than one port - that's a different issue that appears in multiple posts already).In this case:
1) We do a 'sho mac address-table and see that the device with the mac address in question lives on one port, port 1/0/x.
2) We apply mac port security for this exact same mac address to the same port it is already attached to. switch(config)#int g2/0/2 switch(config-if)#switchport port-security mac-address 001a.1ec8.abcd
3) Get this error: 'Found duplicate mac-address 001a.1ec8.abcd'.We again confirm that that is the only port on the entire switch that has this mac-address.Try the command again, same error.
4) We do a bunch of show commands, get in and out of the switch, go back and then try it again, and now it works, same command, same port and same mac address.
-Aging is default 300
-These are Cisco wireless AP's attached to the switch
-This occurs on different switches with different ports using different mac addresses, always same symptoms.
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Jul 24, 2011
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Feb 3, 2013
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Jan 13, 2012
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Mar 1, 2011
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Nov 15, 2011
I have working config for 2003 server:
aaa-server DC1 protocol ldap
aaa-server DC1 (inside) host 172.25.29.9
ldap-base-dn DC=KIEV,DC=CC
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ldap-naming-attribute sAMAccountName
ldap-login-password *
ldap-login-dn CN=ASA_LDAP,OU=aides,OU=IT,DC=KIEV,DC=CC
server-type auto-detect
ldap-attribute-map LDAPVPNMAP
But when i created another aaa-server DC2 with the same config (different ip and name only), which is running under 2008 Server, i've got at debug:
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