Cisco WAN :: 877 Keeps Changing Configuration Register
Mar 30, 2011
I'm having troubles with a cisco 877 router, it keeps changing itself to either 0x2101 which is good, or to 0x3100 which is bad because it messes up my bautrate to 1200 instead of 9600.it doesn't seem to matter if I change it, it will still tell me that it will change at next reload. [code]
I have never seen this before.the command in conf t : configuration-register 0x2101 is not working, played with wr mem or copy start run neither of one useful.
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Jun 1, 2013
I am having two 6509E working in VSS and both are working fine. But the configuration register of command "remote command switch show boot" is 0x8000 which is different from that of RP (0x2102) .Now i want to change the value of configuration regsiter of SP to 0x2102.
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Mar 7, 2012
recently we purchased cisco smart care, and today i recived this notification: Configuration RegisterCriticalNot fixed on switch it is set to: Configuration register is 0x2101
what is recomended conf reg for this switch?
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Sep 29, 2002
I X modem an IOS file to my 2620 router and in the process set the console bps to 115200 which changed the register to 0x3922. Now when I try to connect from the console with any bps, I get garbage!
I can connect from the AUX port and get to the User Exec. mode but since no privileged password is set, I can't get any further to change the config register back to 0x2102.
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Apr 17, 2012
I am uploading new configurations to my Cisco 3750 stacked switch and noticed that after the load I cannot log back into the switch because my password somehow was changed. After performing password recovery and getting back into the swtch, I noticed the configuration register was 0xF. I have never seen this before. The config-register command does not seem to be supported to change it back to factory default. The switch is on a ship which has several power hits when they switch power from shore to ship power.Can this cause the configuration register to change? What is the best way to change the configuration register?
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Mar 13, 2012
Last night I've upgraded a catlyst 6509 (non-redundant), during the upgrade I# run into the problem that the 6509 only wants to boot from sup-bootflash, and that it took an old image from sup-bootflash.I deleted this old image and then the node came into rommon mode.There I did the boot command and refered to the correct image on disk1:Now the boot succeeded. Just in time before I run out of my maintenance window.
I did some investigation and looked into the supervisor (using attach 5 and remote command switch show boot) and detected that it's configuration register is on 0X2101 (This is because I run into problems a week ago because of a corrupt flash disk and changed this in rommon mode , without changing it back, I'm afraid I'm not totally known with the 6509)
Question is now how can I change the configuration register back to 0x2102 without any service interruption (It will cost me quit some goodwill if I have to boot the node for the third time in three weeks)?
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Mar 22, 2012
We have had an ASA5505 for close to two years. About a year ago, we added a second ISP ("BOB") which became our primary and our old one (SBC) became our backup. I successfully modified the config for this and it's been working well.
Now we're changing our primary ISP to Comcast and getting rid of BOB, so right now we actually have 3 ISPs coming into our building.
I removed the BOB interface and routes, then added an interface for Comcast using an IP address from the range they provided as well as a static route to the gateway they provided - everything is analagous to the previous interfaces and routes, but it doesn't work. If I physically disconnect the Ethernet cable going to the Comcast cable modem, then the ASA does fail back to the SBC interface as expected. If I put the BOB interface & route back in there, it works again through BOB.
If I connect a PC to the Comcast cable modem and use an IP/Gateway they provided, the Internet connection *does* work. Using this same exact IP info in the ASA doesn't work.
Is there some other configuration item besides interfaces and static routes that I should be modifying? Is there some way I can dig deeper into the ASA to see exactly what is failing?
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Mar 30, 2012
I ve been trying to acess some websites at work, but they are blocked via proxy, wich means, the only way you can access the internet is if you type a certain proxy (172.16.0.1, port 8080), at the control panel of your browser. I can only use the internet browser. If I try to change the proxy, to enter the blocked websites.Is there a possibility to unblock the websites without changing the proxy configuration?
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Aug 27, 2012
I am going to change a running 6500 switch. I am missing a best pratice doc for changing a cisco switch configuration. My question is if a startup-config has an error (due to typo mistake, or due to comands not supported on latest IOS) and I do copy tftp startup-config then what will happen ? I want to make sure when I do "reload" the switch then it should boot normally with the latest startup config !
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Oct 24, 2012
I am installing a several new Cisco VM servers. The VM hosts are losing connectivity when we apply the etherchannel config in the core stack. VMware has stated that the etherchannel load balance needs to be src-dst-ip in order for the etherchannel to work.However, my current stack has 2 etherchannels configured to other switches through out the bldg in network closets. The current load balance configuration is src-mac.My question....when I make the change to src-dst-ip, will my network connectivity go down? I saw there was an older article on this that doesnt provide an answer just a work around. Here is the article. [URL].
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Mar 7, 2011
I need to run a windows hyper terminal program between my POS register which has a serial RJ11 port to my PC db9 male port
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Feb 6, 2007
I have tried the config-register command and it is not available. Here is part of the show ver command. I want to change the config-reg from 0xF to 0x2102.I have run into this before but don't remember how to correct it.....I think I have to use the boot command but not sure. Here it the output show ver Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(25)FX, RELEASE SOFTWARE (fc1)
ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(25r)FX, RELEASE SOFTWARE (fc4)
System returned to ROM by power-on?System image file is "flash:c2960-lanbase-mz.122-25.FX/c2960-lanbase-mz.122-25.FX.bin"cisco WS-C2960-24TT-L (PowerPC405) processor (revision A0) with 61440K/4088K bytes of memory.last reset from power-on
4 Virtual Ethernet interfaces
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.64K bytes of flash-simulated non-volatile configuration memory.
Model number : WS-C2960-24TT-L
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 26 WS-C2960-24TT-L 12.2(25)FX C2960-LANBASE-M
Configuration register is 0xF
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Feb 21, 2011
Whenever I go to sites like godaddy.com or mydomain.com to register a personal domain, they only offer me sites like url...What can I do? Computers have lots of memory but no imagination..
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Jul 11, 2011
We have a few remote sites that connect back to HQ with T1 & DMVPN (Cable/DSL) for data. Our CM Publisher/Subscriber reside in HQ. We recently installed FXS cards in these routers to provide Fax functionality to our remote sites since we will be removing some POTS lines.
Can we register the 2811 as a voice gateway (I am thinking MGCP as with VG224's we have in production) and have it handle faxes with FXS card as well as route data or will we need a separate device for this?
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Mar 30, 2012
I am trying to implement a small VoIP LAN (you can see the lan in attachments)for a personal project. I am using:
- 2 x XP (on which i installed Cisco IP Communicator 7.0.3.0)
- 1 x Ubuntu (running GNS3 with a c3600 Router)
The problem is that the phone which is not in the same LAN with the tftp server cannot register.
1) Can a phone register to a tftp server from another LAN ?
2) If the answer for 1) is yes, what am i doing wrong (you can see the details in the attachments)? I mention that the ping works well anywhere in the LAN.
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May 17, 2012
I do get this error all the time on my WLC 4402 logs:
"Could not Register IP Add on MSCB. MSCB still in init state. Address:e4:ce:8f:13:e4:de[...It occurred 2 times.!]"
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May 15, 2012
i have out of box 20 AP 1100 LWAP...and cisco 22XX WLC......i need few information
1- what is option 43 in DHCP once i take the AP out of box shd i config static IP for managment
2- How LWAP register to WLC?
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Jan 12, 2011
I have just upgraded one of our 4400 to 7.0.98.0. Most of the AP re-registered with out issues. I have two AIR-LAP1142N-E-K9 on a remote site that will not re-register.I have pointed them to another 2125 WLC (7.0.98.0) and they register fine. Point them to yet another 4400 (7.0.98.0) I get the same issue.I am getting this error when the register on the 4400s.*Jan 11 14:39:24.000: %CAPWAP-3-ERRORLOG: Selected MWAR 'abzewwlc'(index 1).*Jan 11 14:39:24.000: %CAPWAP-3-ERRORLOG: Go join a capwap controller *Jan 11 07:05:55.000: %CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 144.46.211.5 peer_port: 5246*Jan 11 07:06:55.000: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to 144.46.211.5:5246 I suspect it may be as they both have In the client config.Then again maybe not.Configured Switch 1 Addr 158.139.177.203Configured Switch 2 Addr 144.46.214.25
Question 1 if I do a "clear config except static IP" will I still be able to telnet tp them or will they default to no telnet no ssh ?
Question 2 any idea how to get past this DTLS error ?
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May 8, 2013
I have cisco WLC 5508 on the HQ, now I have another site in different subnet I tried to put AP on it and configure a DHCP pool with option 43 but the AP failed to register the WLC on the HQ.
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Sep 13, 2012
Facing a unique problem in my cisco Router (2811) .. Router is well configured but suddenly it stops working , when logged in using console the configuration register is observed to be 0x2142.
How does it automatically changes register value during operation?
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Jul 6, 2011
I am implementing Cisco Network Access Control with Wireless Controller 5508 (WLC5508 below) . Could you tell me how to register WLC5508 as SNMP Agent for Cisco Access Manager (CAM below) ?
[System Information]
IOS version of WLC5508: 7.0.98.218
Version of CAM: 4.8.0
[Code]....
I succeeded to register WLC5508 by using IP address of Service Port on the CAM Web Console. But WLC5508 has only one Service Port, which has no redundant port. I want to register it by usin Management Interface, which has backup port. It is also desirable to implement redundancy of Service Port if possible.
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Dec 26, 2012
I am using PC to mobile dialer. It was working fine but now I am unable to login to my wowcall account due to error - Unable to register to SIP server.
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Jun 13, 2012
I have just purchased SLM2016T-UK (SG200-18) and trying to register the warranty online (was told by the reseller to do so) but I can't find any link direct me to the correct site.
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Dec 6, 2011
I have installed 2 ACS 5.2 appliances, the two appear as Primary. When I try to register one of them with the other one using "System Administrator -> Local Operation -> Deployment Operations" I get the following message:
This System Failure occurred: Unable to authenticate with node.. Your changes have not been saved.Click OK to return to the list page.
I have tried with both "ACSAdmin" and "admin" users with their respective passwords.
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May 18, 2013
I am developing CAP1602I & 2500 Controller.The CAP1602I-E-K9 can't register with the 2500 controller. [code] logging appears: capwap can't process uncryped data..I even didn't configure capwap on CAP1602.May I know if CAP1602 doesn't support LWAPP? Why LWAPP doesn't work?According to the logging, I also tried to configure the "Data Encryption" on 2500 controller ( according to 7.0.116.0 guide)
"Cisco 2500, WiSM2, WLC2—By default, these platforms do not contain DTLS. To turn on data DTLS, you must install a license. These platforms have a single image with data DTLS turned off. To use data DTLS you will need to have a license."Note If your controller does not have a data DTLS license and if the access point associated with the controller has DTLS enabled, the data path will be unencrypted. I should purchase a license? or, if I can configure the CAP1602I to don't encrypt data?
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Jul 15, 2012
Not able to register AP Point < Air-Cap35021-E-K9 > on 4402 WLC running IOS (AIR-WLC4400-K9-7-0-235-0 ) Other AP already registered on the WLC are AIR-LAP1242AG-E-K9 & AIR-LAP1131AG-E-K9.
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Oct 29, 2011
We have found that only Cisco 1231 WAP are exhibiting this behaviour. Their Primary WLAN controller is Cisco1 WLC but they fail to register to Primary WLC and fall back to Cisco2 WLC. After about 200 sec , they attempt to connect to Primary WLC once again and fail. The whole cycle is repeated every 250 seconds.
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Jan 14, 2013
I have 2504 WLC with 1142AP. Currently i am starting the deployment. today when i was registering my first AP to WLC. WLC starts rebooting continuously..without any AP registration its stable and i can access the GUI.
WLC2504 : 7.2.103.0
AIR-LAP1142N-E-K9: Cisco IOS Software, C1140 Software (C1140-K9W8-M), Version 12.4(25e)JA, RELEASE SOFTWARE (fc2)
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Jun 11, 2012
Today I ran a failover test between our primary and secondary ACS systems (ran 'acs stop' on the primary) and in the process decided to promote the secondary while I had the primary down. All was fine until I brought the primary back up and tried to re-register the secondary to it. I get the following error message: I went into System Administration >Operations >Distributed System Management on each and it showed the other device as deregestered, tried to promote from there but it failed too, so I deleted them and tried to register the secondary again. After that didn't work I tried rebooting both but that didn't work either. I know the user/pass I'm using is good and I've tried using both the IP address and the hostname.
ACS/admin# sh app version acs
Cisco ACS VERSION INFORMATION-----------------------------Version : 5.3.0.40.5Internal Build ID : B.839Patches :5-3-0-40-5
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Jun 5, 2012
Need to confirm on 4507 R switch should i set config reg to 0x2102 or 0x2101?
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Dec 12, 2012
We have a 5508 controller that manages AP's at approximately 20 branches - each branch has their own subnet. We have a single branch (subnet) with new 2602 AP's that will not register with the controller. All communications to this subnet appear normal and there are no ACL's in place between the AP's and the controller. The AP's are able to resolve the controller IP address via DNS and begin the registration process but then timeout. We have successfully installed 2602 AP's at other branch locations and they register with no problems - this is only a problem at a single branch. I've attached some debug messages below for a single AP (this is a production environment so I parsed un-necessary info) and also included the console messages from a different AP (the console messages on the AP's are the same). There are currently 9 AP's at this location and none of them will register.
Debug Capwap Events:
*spamApTask0: Dec 11 14:39:32.904: 44:2b:03:9a:d1:10 Discovery Request from 10.29.9.190:44306
*spamApTask0: Dec 11 14:39:32.904: 44:2b:03:9a:d1:10 Join Priority Processing status = 0, Incoming Ap's Priority 1, MaxLrads = 300, joined Aps =272
[Code]......
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Oct 15, 2012
We currently have about 50 Cisco 1252 wireless access points running from a 4404 Wireless LAN controller. We need to order more APs, but of course the 1252s have been discontinued.Was assured by Cisco that the 1262 would work just fine with our WLC. I'm messing around with a trial 1262 and am running into problems.We hard-code the IP address, hostname, default gateway, and controller IP address in each of our access points. I did that with the new 1262 the same way I did with the 1252s:lwapp ap ip address lwapp ap ip default-gateway etc., etc.That didn't work. Then I tried doing the same thing using (not sure if this is the correct terminology...) the capwap commands.
The AP still doesn't show up on the WLC's GUI, though I can ping the AP from the WLC and I can ping the WLC from the AP.I also can't use a web browser to get into the access point's configuration tool. Do I understand correctly that the lightweight APs don't have the GUI?
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May 27, 2013
\We have purchased AP 1041 and WLC 2500 and I am doing a testing on the configuration. It is fine when both AP and WLC are sitting on the same network. However, if I connect the AP to the WLC which is on another network, I found that latency is quite high when PING the gateway. Here is the brief topology.
AP (172.30.40.212) ------- (VLAN 1: 172.30.40.202) switch (VLAN 2: 172.30.41.202) ----------- (172.30.41.210) WLC
I try to plug the PC to VLAN 1 and do a PING test to the VLAN 1 interface and it causes some packet loss and high latency. [URL] If I do the debug ip udp on the AP, it seems the result is normal.
*May 28 13:53:36.951: UDP: sent src=172.30.40.212(26610), dst=172.30.41.210(5246), length=1069
*May 28 13:53:36.952: UDP: rcvd src=172.30.41.210(5246), dst=172.30.40.212(26610), length=89
*May 28 13:53:36.953: UDP: sent src=172.30.40.212(26610), dst=172.30.41.210(5246), length=685
*May 28 13:53:36.954: UDP: rcvd src=172.30.41.210(5246), dst=172.30.40.212(26610), length=89
Configuration:
AP 1041 Version: 15.2(2)JB
WLC 2500 version: 7.4.100.0
Both device are configured the static IP address manually with default setting and I do not enable DHCP option 43.
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