Cisco Switching/Routing :: Recovering From Corrupted Software Router 2621xm?
Jan 14, 2013
I am trying to recover a corrupted ios, from rommon after configure all steps of IP_ADDRESS, TFTP_SERVER and so on, copy files correctly, but after it need router 5 minutes to erase flash, or something else....after it i can not boot from ios loaded as i show below:
!!!!!!!!!!!!!!!!!!!!!!
File reception completed.
Copying file /c2600-advsecurityk9-mz.123-11.YZ2.bin to flash.
Erasing flash at 0x61fc0000
program flash location 0x60ea0000
[code].....
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Jan 27, 2013
I have a 2621XM router that I know has reached its end of life. However, would I be able to download the 802.1q VLAN encapsulation for it? If I can, how do I go about doing it.
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Jan 10, 2013
We have 2 router cisco 2621XM and want to configure a VPN between them, but first we want to configure ADSL in both with the card installed.
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Jun 25, 2012
router 2811 has 2 files ios in flash
Router#sh fla
-#- --length-- -----date/time------ path
1 35202336 Mar 3 2008 16:12:28 +00:00 c2800nm-adventerprisek9-mz.124-8d.bin
...
13 59374168 Mar 5 2012 12:49:22 +00:00 c2800nm-adventerprisek9-mz.124-24.T.bin
151076864 bytes available (105431040 bytes used)
Router#
I try to make it load c2800nm-adventerprisek9-mz.124-24.T.bin
[Code] ...........
I did
verif flash:c2800nm-adventerprisek9-mz.124-24.T.binit is ok
is it corrupted memory? how to fix it?and aslo with System image file is "flash:c2800nm-adventerprisek9-mz.124-8d.bin"it dos not show voice ports for WIC2-FXO in runn conf
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Jan 9, 2013
Here iis a diagram of my current lab where I am using IP SLA to automatically switch from ISP 1 to ISP 2 should the connection go down (and vice versa)
My switches are C3550 Layer 3 switches. Both ISP's do work so connectivity is not the problem.
If I shutdown the fa0/19 port on SW1 the SLA kicks in and changes my defualt route out 10.0.1.0 without a problem. And when I do a no shut it comes back to tge 192.168.10.0 netowrk just as we would expect. No problem there.
When I disconnect the ISP 1 cell phone the SLA does switch the defualt route to the 10.0.1.0 netowrk. Okay, just fine so far. Here isthe problem, when i reconnect the cell phone the SLA does not come back to the 192.168.10.0 netowrk without first having to delete the SLA and then recresting it (both switches).
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Sep 10, 2012
How to setup dynamic dns for Cisco 2621xm ? What IOS support Dynamic Dns?
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Nov 6, 2011
will the AIM-COMPR2-V2 will work with the 2621xm
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Oct 20, 2012
it seems that i made a mistake when typing the BAUD rate of a 2960-Switch in rommon.I can't start the switch now, because there is no image on it (because I deleted it before) and the baud-rate has wrong settings. When connecting via console cable i can't see anything (except some strange hieroglyphics) when starting. I tried all the speeds in teraterm... without success.what can i do, to recover the switch back?
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Nov 20, 2011
In fact i receive traffic on a one client per vlan basis (traffic is PPPoE), i receive all this traffic on a router, collecting all these vlan on a bridge where the pppoe packets are treated.When I use a transeiver to convert operator fiber arrival to my router copper media interface, i have no problem....
When I use dot1q-tunnel to make the same on my 3750, packets seems to be corrupted.I get PPPoE timeouts and packet loss, not regulary, totally stochastic...
I made dozen of tests and different settings, without success I first thougt of MTU issues. [code] I made tests with system MTU and/or system jumbo MTU above 1500, without success.I didn't found any known caveats on 3750 running Version 12.2(25r)SEE4 related to dot1q-tunnel.
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Nov 27, 2011
I've got a 2621XM that has not been used for a while.Completely stripped of any modules and configuration files, the router will continually cycle the startup process without actually booting from the IOS.
The cycle displays the following :
System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)
Copyright (c) 2003 by cisco Systems, Inc.
program load complete, entry point: 0x80008000, size: 0x10034ec
What I've tried:
1) Downloading another IOS image (c2600-is-mz.123-20.bin) via Xmodem and running "confreg 0x2102" from the rommon. All that did is change the last message to "program load complete, entry point: 0x80008000, size: 0x10fa95c"
2) Running the command "boot flash:c2600-is-mz.123-20.bin". If I enable the diagnostics via rommon, the cycle expands to:
System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)
Copyright (c) 2003 by cisco Systems, Inc.
program load complete, entry point: 0x80008000, size: 0x10fa95c
Testing lower main memory - data equals address
Testing lower main memory - checkerboard
[code]....
If it wasn't for the lack of error messages, I would assume it was a hardware issue.If the image was corrupted, I would expect a message indicating that the image couldn't be read.
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Jun 18, 2011
I'm trying to login to my cisco 2621XM router. I'm using putty and I can't remember the how to cable it or the settings to use in putty. I don't have a db9 input on my pc, so I need to go through my NIC. What type of cable to use, what port to plug it into on the router, and what settings to use in Putty.
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Jun 16, 2012
I have an old 2621xm router in CCIE lab at home. Only a week ago I started having issue on 2 of them. The problem is on one of them when I go under interface configuration and I type "no shut" nothing happens. Interface stays in administratively down status and when I check running config "shutdown" is still under interface.
On the other one the same problem but only with "router rip" command. I configure my rip routing but then when I check running config there is no rip section and also RIP is not running under "show ip protocols rip".These routers are connected to 2511 AccesServer. So I thought the issue might be communication from AccessServer to these devices. I connected a console cable straight to them and still the same problem. Everything else is working on these devices.
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Jul 26, 2012
I'm trying to access the web setup page and I'm being asked for the user name and password. I have the password from the initial setup written down but apparently didn't also record the (changed) user name. It's not "admin" (tried that - and just leaving it blank - already).
Is there any way to recover the correct user name short of resetting the router and setting it up again from scratch?
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Jan 29, 2011
I corrupted my BEFSR41 firmware v4.2; is there a way to recover?
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Jun 11, 2012
I cleared the flash (disk0) on my ASA and now I'm unable to restore it with an IOS.
When I attempt to load it with an IOS, it appears to load just fine. It even proceeds to restart, but when it boots back up it displays the error "No images in / Error 15: File not found. unable to boot an image" and goes to ROMMON.
My computer's IP is 10.0.0.1. I'm assigning the ASA 10.0.0.254. The image filename is asa724-k8.bin. Here's the output of the environmental variables and the attempted loading of the IOS:
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Jun 27, 2011
i have a cisco 3640 router that i have deleted the image without saving and the router is in ROMM mode i wish to use tftp to download the image
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Mar 10, 2013
i connected 2 routers 2621xm with serial and setup. but i didnt need the RIP cuz i just sent msg/packet from RT2/Laptop2 to RT1/Laptop1 and it saids SUCCESSFUL RECEIVED. so whats wrong with my 2 networks?why passed through from rt2 to rt1 without RIP configuration?
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Mar 1, 2013
Recovering the password for a protected network.It can be difficult sometimes to recover a password for a home wireless network or a small to large business. There are several ways to recover such sensitive data and I would trust you to recover in all honesty for the sake and security of the business you work for or even your home network.So how do I recover the key if I don't know the gateway login to my router? the end user will likely default their router to recover the sensitive data but after defaulting they then realize that the SSID key has now been wiped out. The problem now is that all other trusted devices will be disconnected and the set up for the router; well that's just common sense, you would need to set up your static all over again (if applies) and your security as well. Use other devices in your house, trusted devices that have already been able to connect. Windows 7 is the protagonist in this role. Windows 7 enables the use of wireless profiles to be saved for faster connections to be made within the broadcasted range of the SSID. Btw SSID is the network name you see appear in your Wireless Manager. I.e.Bat_Cave; Starbucks; Barnes & Noble Wifi etc.
TIP #!
SSID - service set identification; two categories apply to SSID
SSID - basic service set identification
This applies to ad hoc wireless networks that do not have access points
SSID - extended service set identification
An infrastructure wireless network that has an access point; however this term can be used either SSID or eSSID. You will see eSSID with Point to Point; backhauls, switches, subscriber modules or comtrols; there are tons others but I won't stress other device types. Rarely will you connect to an AP, likely the type of service you receive depends on what you connect to, radio equipment like Canopy, Ubiquiti and Motorola are technologies you will see that are wireless based. What you are seeing is coming from a smaller device within your home or office network. If you use a Verizon air card, it's likely connecting to a nearby AP or a nearby radio which is pointing to an AP.Back to reality now, in order to locate profiles used in Windows 7 we head to the location by two categories of view in the control panel:
Small Icons Start > Control Panel > Network and Sharing > Manage Wireless Networks (This can be found in the left navigation within the vertical blue strip.)
Category Start > Control Panel > Network and Internet > Network and Sharing > Manage Wireless Networks (This can be found in the left navigation within the vertical blue strip.)
What you will see here may be a small list or a large list of every network you have connected to since you purchased the notebook. Now certificate trusted networks will appear here however they may not contain a key. The company I work for requires certificate of authentication and then the use of password linked to Active Directory as long as my computer is on the domain controller. Each wireless profile you see appear here has its own configuration and each configuration is bound to the SSID or network name. It's like the title of a book with its own story. You can have two (2) books with the same name but a different story. When I say different story, I am referring to a different encryption standard; cipher and wireless password. You can see below I have two (2) wireless networks with the same name but notice the different settings.
Bat_Cave
Standard: WPA2 Personal
Cipher: TKIP
Key: -pass51-
Bat_Cave
Standard: WPA Personal
Cipher: AES
Key: #Off5id35!
The reason I am showing you two (2) configurations is because when you are recovering a key for a network, you want to make sure the configuration is the same or else the door will always be locked until you correct your errors. The network name we have is Bat_Cave and we need to recover the key for the SSID that has a Cipher of TKIP.Right click the profile name and click properties. This will allow you to change SSID configuration on the notebook ONLY; in case changes have been made to the router or a buddy changed his encryption standard on his home network. Yeah it's easy enough just to remove the profile and reconnect; but that would be too easy, you wouldn't learn anything.Once you are in the properties of the wireless profile, click the [Security Tab] up top and you will see: encryption standard, cipher and the key; and as a plus, a check box to show you what the key is. Show the hidden contents and copy or write down the key.By using other trusted device on your network or business, you can utilize the resources that you have, to recover a password on your home or business network so long you have the permission from your superior and a good heart for positive intent.
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Dec 26, 2011
I am not sure if the issue I have is due to router's performance of my configuration. Currently I have 2621XM connected in my internal network where Fa0/1 is considered untrusted zone and Fa0/0 is considered trusted. It appears that traffic is limited to about 3.17MBps (Mega Bytes) between Fa0/0 and Fa0/1. There are ACLs on the Fa0/1 inbound and Fa0/0 inbound. I am also using ip inspect rules for the Fa0/1 outbound traffic. When I remove ip inspect policy from the Fa0/1 interface, the traffic speed bumps up to about 4.8MBps (which is about 38Mbps - Mega bits).
Each time the CPU utilization is: CPU utilization for five seconds: 99%/99%; one minute: 19%; five minutes: 4% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
Access to the router during that time is veerrrryyyyyy slow! Does this mean I am hitting the maximum limit this router can handle?
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Mar 19, 2012
I simply need to recover an embeded access point password.
I have the passwords to the 881-w router, but passwords to the embedded access point I don't have.
What is the recovery process for it, or the password reset process for the embedded access point.
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Sep 1, 2009
My Cisco 2811 router starts to hang & give the following error. "Original nvconfig doesn't have a correct magic number recovering from backup."I need to fix it ASAP.I've already enter common & change confreg to 0x2142 & reset but same problem occur.
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Dec 15, 2010
I have a Cisco 2621XM router with two ethernet interfaces that sits before a vendor supplied VPN router. I need to see the IP traffic incoming to my router from the WAN side (fasteth0/1 below). I setup ip cef, and ip flow ingress on the interface. However -- it seems that what I see when I use "ip cache flow" command doesn't have a very long history or life. What commands am I missing so that I can see a summary of the stats over say the last 5, 10 or 15 minutes? Is this the best config that can be used for this, or can I create a more summarized report just using the router HW and IOS? Basic current configuration:version 12.3service timestamps debug uptimeservice timestamps log uptimeservice password-encryption!hostname Littleboy!ip subnet-zeroip cef table event-log size 1024ip cefip cef accounting per-prefix non-recursive prefix-lengthip cef traffic-statistics load-interval 180!ip flow-cache entries 2048ip flow-cache timeout inactive 60!interface FastEthernet0/1 description Littleboy to vpn-wan ip address 10.1.0.1 255.255.255.252 ip flow ingress?
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Sep 29, 2011
I am using packet tracer 5.3 version and I am trying to configure IGRP on it but it doesn't show me igrp under routing protocol selection.Router number is 2621XM.IOS version is 12.2.learn the configuration of IGRP.
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Mar 25, 2012
Very recently whenever I download a file which is in a package e.g. a rar file or an iso it always seems to be corrupt. For example I downloaded the windows 8 consumer preview multiple times and each time was corrupt. Now I know it isn't anything to do with my computer as I have this problem on all devices connected to my internet including my ps3, every game I download is corrupt and I cannot install it. I've tried all the obvious things like turning the router on and off and plugging the device directly into the router via ethernet
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Jun 5, 2011
IOS of my LAP 1131AG is corrupted. It is giving error messages while booting and asks for boot image.
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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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Oct 1, 2012
I am getting following error on a Cisco 3845 router intermittently.
000312: Sep 26 15:38:19: %CALL_CONTROL-3-STAT_MEMORY_CORRUPTED: Memory corruption detected in memory=69028FA8 allocated for RTCP statistic
000315: Oct 1 08:26:01: %CALL_CONTROL-3-STAT_MEMORY_CORRUPTED: Memory corruption detected in memory=6902E160 allocated for RTCP statistic
Platform: Cisco 3845
IOS: c3845-spservicesk9-mz.124-24.T2.bin
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Apr 1, 2011
half of my laptop driver are corrupted (network, USB, and sound). I had installed a program called 'motion joy' and play with the software... right after i reboot my laptop, the sound icon and the network icon on the system tray are crossed out. I can see yellow exclamation mark on the drivers icons on device manager.
I made an attempt to roll back those corrupted drivers but nothing happen. Even when i try to update it, it says i had the latest driver. ;( I tried to uninstall the driver but the those driver files at 'system32/driver' are still there. I even tried to run driver CD that comes along with my laptop, and when I run the installer, it states that all the drivers are install.
so bascially now my laptop boot, run program BUT can't access internet , all USB ports are unavailable,and no sound at all.
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Sep 25, 2012
I have an Averatec 1550H laptop. The wireless card driver was corrupted so I replaced with a driver from Trigem. The name of the device is an Intel(R) PRO/Wireless LAN 2100 3B Mini PCI Adapter. I can get as far as a message saying a cable is unplugged.
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Dec 7, 2011
I want to upgrade IOS on 1811 from 12.4(11)T3 to 12.4(15)T16.
As a standard CF size in the 1811 is 32 M, so I have to free some space.
Here the strange things starts.
dir issued on the router shows thet ther is no image on the flash!
dir
Directory of flash:/
No files in directory
31940608 bytes total (12771328 bytes free)
sh ver shows that
uptime is 19 weeks, 2 days, 9 hours, 22 minutes
System returned to ROM by power-on
System restarted at 15:21:30 EEST Tue Jul 26 2011
System image file is "flash:c181x-advipservicesk9-mz.124-11.T3.bin"
The other strange thing is that some space is allocated for something!
(flash size) 3194060 - 12771328 (free) = 19169280 (space allocated to ???)
Just now router is running IOS c181x-advipservicesk9-mz.124-11.T3.bin The size of this IOS is 19 155 816, that is approximately equal to the size that allocated to something invisible.
fsck flash and format flash doesn't work. Bug Toolkit doesn't show any bugs similar to my issue.
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Dec 29, 2011
I noticed my tumblr dashboard was loading corrupted thumbnails. I first thought that tumblr was having problems, until it started happening on my deviantArt, and YouTube. I was worried that it was my computer, but then the same thing started happening on my moms' Macbook, and then her Wi-Fi streaming television started corrupting the video. And then, sometimes a website won't load fully, but will instead load part of it's code, or instead my browser (I've tried on Google Chrome, Firefox and IE) tells me the webpage is unavailable, or doesn't exist. It'll load up semi-properly (with the corrupted images still) after a refresh or two, but it's tiring and worrisome.
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Aug 19, 2011
Newly acquired DIR-615 E3 with F/W vers. 5.10. Router configured with IPv4 static address for WAN works fine. As soon as I configure the WAN IPv6 with a static IP address also, the configuration for the IPv4 static IP is corrupted. Other combinations of (WAN config) using static for either IPv4 or IPv6 with DHCP or other seem to work. Just appears to have conflict with two WAN static IP configurations.
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Oct 31, 2012
Region : Malaysia
Model : TL-WR841N
Hardware Version : V7
Firmware Version : 3.12.7 Build 110726 Rel.37868n
ISP : unifi
as I tweeted here: [URL] The top download from [URL] is corrupt.
Took my ages to find that I need to post in the 300Mbps Wireless Routers forum to get support with the TL-WR841N. All the little subgroups are a little over-engineered to say the least.
I'm keen to improve the performance of this router. It needs rebooting and Apple based clients need to reconnect all the time.
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