RE: VERY strange 2621 behavior [7:6636]
Might want to take a look at this link. courtesy of Adam Quiggle, who used to spend a lot of time here. http://home.nc.rr.com/quiggle/ConfigReg.xls CCIE candidates, anyway, should be familiar with the config register values. Manipulating them can provide one part of a router security program. Chuck -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of John Neiberger Sent: Friday, June 01, 2001 7:23 AM To: [EMAIL PROTECTED] Subject:RE: VERY strange 2621 behavior [7:6636] I discovered that somehow the configuration register was changed to 0x3922! What the heck does that do?? I was watching the person who initially booted the router and he did absolutely nothing that would alter the configuration register; it just seems to have done it during a reload because we didn't notice this odd behavior until we did a warm reboot. Very bizarre. But, since I changed the config register back to 0x2102 it seems to be working normally. I can think of nothing that would cause an unexpected configuration register change like that. Oh well, another weird issue in the books. I think I'll be upgrading the IOS on that pretty quickly! John Daniel Cotts 5/31/01 12:36:51 PM Time to change your terminal emulation software to different speeds until you find the correct one. I have heard that with Hyperterminal that you need to completely close down the application for each speed change. Others may comment from experience. BTW Do you have a SmartNet service contract on that box? -Original Message- From: John Neiberger [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 31, 2001 12:41 PM To: [EMAIL PROTECTED] Subject: VERY strange 2621 behavior [7:6636] This is exceptionally strange We just received a used 2621 running 12.0(7)T. Initially it booted just fine and we got a prompt. While in priveleged mode we did a show run and intertwined with the output was a portion of a message. The readable portion said something about environment write to NVRAM failed. We saw this three or four times. So, after poking around a bit we did a reload. During the reload we saw the error again. Toward the end of the reload we received a warning message that said something like this: This action will disable password recovery. Be sure that you have alternatives to password recovery before continuing. Continue with operation [yes/no]? I have absolutely no idea what that means, I have never seen anything like it before. We answered no, of course. At this point the router locked up and it appears that the console baud rate has changed but so far we're unable to figure out what it changed to. I've rebooted the router several times to no avail. Nothing but gibberish on my terminal screen. Any thoughts? I've searched CCO and have yet to see anything about this behavior yet. Thanks, John Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6889t=6636 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VERY strange 2621 behavior [7:6636]
Rule 1:Don't use hyperterminal See cws.internet.com or any other shareware/freeware site for apps that can do a break properly and do not suck. Brian Sonic Whalen Success = Preparation + Opportunity On Thu, 31 May 2001, Daniel Cotts wrote: Time to change your terminal emulation software to different speeds until you find the correct one. I have heard that with Hyperterminal that you need to completely close down the application for each speed change. Others may comment from experience. BTW Do you have a SmartNet service contract on that box? -Original Message- From: John Neiberger [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 31, 2001 12:41 PM To: [EMAIL PROTECTED] Subject: VERY strange 2621 behavior [7:6636] This is exceptionally strange We just received a used 2621 running 12.0(7)T. Initially it booted just fine and we got a prompt. While in priveleged mode we did a show run and intertwined with the output was a portion of a message. The readable portion said something about environment write to NVRAM failed. We saw this three or four times. So, after poking around a bit we did a reload. During the reload we saw the error again. Toward the end of the reload we received a warning message that said something like this: This action will disable password recovery. Be sure that you have alternatives to password recovery before continuing. Continue with operation [yes/no]? I have absolutely no idea what that means, I have never seen anything like it before. We answered no, of course. At this point the router locked up and it appears that the console baud rate has changed but so far we're unable to figure out what it changed to. I've rebooted the router several times to no avail. Nothing but gibberish on my terminal screen. Any thoughts? I've searched CCO and have yet to see anything about this behavior yet. Thanks, John Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6935t=6636 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VERY strange 2621 behavior [7:6636]
I discovered that somehow the configuration register was changed to 0x3922! What the heck does that do?? I was watching the person who initially booted the router and he did absolutely nothing that would alter the configuration register; it just seems to have done it during a reload because we didn't notice this odd behavior until we did a warm reboot. Very bizarre. But, since I changed the config register back to 0x2102 it seems to be working normally. I can think of nothing that would cause an unexpected configuration register change like that. Oh well, another weird issue in the books. I think I'll be upgrading the IOS on that pretty quickly! John Daniel Cotts 5/31/01 12:36:51 PM Time to change your terminal emulation software to different speeds until you find the correct one. I have heard that with Hyperterminal that you need to completely close down the application for each speed change. Others may comment from experience. BTW Do you have a SmartNet service contract on that box? -Original Message- From: John Neiberger [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 31, 2001 12:41 PM To: [EMAIL PROTECTED] Subject: VERY strange 2621 behavior [7:6636] This is exceptionally strange We just received a used 2621 running 12.0(7)T. Initially it booted just fine and we got a prompt. While in priveleged mode we did a show run and intertwined with the output was a portion of a message. The readable portion said something about environment write to NVRAM failed. We saw this three or four times. So, after poking around a bit we did a reload. During the reload we saw the error again. Toward the end of the reload we received a warning message that said something like this: This action will disable password recovery. Be sure that you have alternatives to password recovery before continuing. Continue with operation [yes/no]? I have absolutely no idea what that means, I have never seen anything like it before. We answered no, of course. At this point the router locked up and it appears that the console baud rate has changed but so far we're unable to figure out what it changed to. I've rebooted the router several times to no avail. Nothing but gibberish on my terminal screen. Any thoughts? I've searched CCO and have yet to see anything about this behavior yet. Thanks, John Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6763t=6636 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: VERY strange 2621 behavior [7:6636]
Time to change your terminal emulation software to different speeds until you find the correct one. I have heard that with Hyperterminal that you need to completely close down the application for each speed change. Others may comment from experience. BTW Do you have a SmartNet service contract on that box? -Original Message- From: John Neiberger [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 31, 2001 12:41 PM To: [EMAIL PROTECTED] Subject: VERY strange 2621 behavior [7:6636] This is exceptionally strange We just received a used 2621 running 12.0(7)T. Initially it booted just fine and we got a prompt. While in priveleged mode we did a show run and intertwined with the output was a portion of a message. The readable portion said something about environment write to NVRAM failed. We saw this three or four times. So, after poking around a bit we did a reload. During the reload we saw the error again. Toward the end of the reload we received a warning message that said something like this: This action will disable password recovery. Be sure that you have alternatives to password recovery before continuing. Continue with operation [yes/no]? I have absolutely no idea what that means, I have never seen anything like it before. We answered no, of course. At this point the router locked up and it appears that the console baud rate has changed but so far we're unable to figure out what it changed to. I've rebooted the router several times to no avail. Nothing but gibberish on my terminal screen. Any thoughts? I've searched CCO and have yet to see anything about this behavior yet. Thanks, John Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6644t=6636 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
