Maintaining clock settings on a 2950 switch?

I have set up external NTP synchronization on a 2950 switch which works fine while the switch is powered on. However if the switch is cycled with a "reload" command, the time established is way off once the switch comes back up. Is this the expected behaviour?
Thanks.

BTW:
Also sometimes difficult finding mention whether the hardware supports an on-board calendar. I've found using the ntp update-calendar both often a fast method to help in determining this, and a great way to keep the calendar accurate across reboots/reloads (if you're using NTP).

Similar Messages

Clock settings changes after switch reloads.

Hi .
I have upgraded IOS for 85 switches in Campus area network from IOS c2950-c3h2s-mz.120-5.3.WC.1.bin to latest IOS downloaded c2950-i6q4l2-mz.121-22.EA4.bin.Switch clock settings changes to 1st March whenever any switch reload or power cycled.Kindly suggest me solution.
With regards,
Shailen Mehta

I believe that Georg is exactly correct on this issue. Switches like these do not have a built in clock chip so they can not keep track of correct time through a reload. Every time they reload (for any reason including installation of new software) they start from a default date and time. The best solution is to configure them to use NTP to learn time from some authoritative source.
If you are connected to the Internet there are many authoritative time sources available that you can use. You configure one (or more if you want redundancy) router to learn time from an authoritative source in the Internet and you configure your other routers and switches to learn time from these routers. If you are not connected to the Internet (or for some policy reason can not learn time from an authoritative Internet source) then you can configure one (or more if you want redundancy) of your routers to serve as the NTP master and have your other routers and switches learn time from this router(s).
This is a good solution for the issue of switches losing the correct time when they reload.
HTH
Rick

Application timeouts w/ subnet devices using 2950 switching

I am having problems with process critical PC workstations that access other workstations and servers.
This consists of a standalone subnet network (static IP's) using a 2950 switch that is also part of a LAN domain.
It appears when there is a LAN issue my subnet workstations experiences problems trying to access it's dedicated servers that are wired all within the subnet 2950 switch.
Could this be that the 2950 switch is looking for the DCHP or domain controller, slowing down my standalone devices?

No, it's not likely.
The only thing affected by DHCP or domain info would be for managemnt (like being able to telnet into the switch).
Switches see the frame, look at the MACs, and either forward or flood the frame. That's all they do (acting as yer basic plain ol' switch).
Other features, such as broadcast/storm control, bad media (cabling), excessive broadcasts (broadcasts are also propagated out all ports and consume considerable bandwidth everywhere), and other things, like QOS settings, buffer parameters, spanning tree can also have a serious negative impact on your throughput, including many disappearing frames.
SO ... let's start by taking a look at a Show Version, and (at least) a Show Run (sanitized, if necessary).
It would also help if you could describe the nature of the traffic that is being dropped / lost / filtered (i,e., database, large graphics files, multicast streaming, file transfers, etc.
What troubleshooting have you tried so far?
Did it ever work, worked ... but not very well, worked well until you updated the IOS ....
Have you checked your LAN for virus / worm / trojan traffic (getting back to huge broadcasts)?
Are you getting any media errors? (Show interface)
Do you run many-to-one, many-to-many, any trunks? any EtherChannel?
Are you getting any "Duplex Mismatch" errors?
Have you tried another switch (for diagnostics to rule out the workstations & media)?
This ought to be enough to get started. get it collected and post it, then we can take another shot at it.
Good Luck
Scott

Duplex Mismatch when connecting ip phone with 2950 switch

When I connect my Cisco IP Phone 7960 with 2950 Switch (any access port within voice vlan), I get the message on Port duplex mismatch but the phone works properly.
From my switch the speed setting is 100/Full but from the Phone its Auto.
My Question is when I try to change duplex settings from Phone, it doesn't gives me any option instead only one option available to save so kindly someone tell me the best way to fix this from Phone or do I have to change the duplex from switch to AUTO ?

Thanks but When I connect with my Cisco 2950 Switch, I can see the weird kind of language as per my attachment.
It wasn't yesterday when I first configured from scratch but just seen today.
Switch is working good with Cisco IP phone connected with it.

Weird Display on 2950 Switch

When I connect with my Cisco 2950 Switch, I can see the weird kind of language as per my attachment.
Switch is working good with Cisco IP phones connected with it.
Can anyone help ?

Check your terminal settings... default is 9600 8n1... You might have changed the speed from either your terminal program or your serial connection.
Tim...

N82: Clock settings not saved!?!

Just got an n82, and I found that the clock settings that I entered the first time when starting the phone are not saved. Every time I turn on the phone I am asked to enter time and date again, which is quite annoying. A consequence is that the alarm does not work either. Any idea on what to do?
Ronnie
Message Edited by brasklapp on 29-Dec-2007 06:34 PM

The phone itself might be new, but who knows how long the battery itself has been waiting in the storehouse. So it should be checked first...
Ericsson T10i -> Nokia 7110 -> Siemens C45, C55, M55, M65 -> Nokia 6131, N73, N82 -> HTC Wildfire, Desire HD -> Nokia Lumia 800 -> HTC Desire X -> Lumia 820 -> Sony Xperia SP -> Lumia 925 + Sennheiser CX 500
If I've helped, use the Kudos button to thank

I have a 60G classic with a non-functioning center select button. Can I set a specific playlist and change settings by hooking up to my PC and then maintain those settings and that playlist once I go remote?

I have a 60G classic with a non-functioning center select button. Can I set a specific playlist and change settings by hooking up to my PC and then maintain those settings and that playlist once I go remote?

I'm having a little trouble understanding the part about your password having to be reset. Why is that happening??
Let's start with Firefox's settings:
(1) You can configure the password manager feature on this tab:
orange Firefox button (or Tools menu) > Options > Security
There is a checkbox to enable/disable the feature.
There also is a "Saved Passwords" button to review and remove any passwords you do not want Firefox to keep.
That tab also has a feature to set a Master Password so that no one can use your saved passwords without knowing the Master Password. You may need to exit Firefox in order for Firefox to ask for that again.
Related articles:
* [[Password manager - Remember, delete and change saved passwords in Firefox]]
* [[Use a Master Password to protect stored logins and passwords]]
(2) Site-specific permissions
If you want to use the password manager for other sites but NOT a particular site, you can configure that in the Permissions Manager.
In a new tab, type or paste '''about:permissions''' in the address bar and press Enter.
After the page loads, use the search box in the upper left corner to narrow down the list to the site you want to configure. Highlight the site on the left side, and on the right side, choose Block under Store Passwords.
(3) Form autocomplete suggestions
Separate from passwords, Firefox remembers entries you've made into forms (in most cases) and lists the matching ones below the form field in a drop-down.
To clear a suggestion, press the down arrow key to highlight it and press the Delete key.
To turn off this feature, see this article: [[Control whether Firefox automatically fills in forms with your information]].
To review and selectively edit or delete form history entries, you need an add-on. For example, you could try this one: https://addons.mozilla.org/firefox/addon/form-history-control/

Can't open console to 2950 switch

Howdy all,
I'm after inheriting a cisco 2950 switch in my new job and I do not know the enable password for it. I went about following the "password recovery procedure" but am getting nowhere.
http://www.cisco.com/warp/public/474/pswdrec_2500.html
I have tried connecting to the switch after powering it up but cannot open a session over the console port. I've tried using both COM ports on my laptop with all the variations of the flow control setting but no joy.
I took a look at an old config file that was saved on the network for the switch and found this at the end:
LINE CON 0
TRANSPORT INPUT NONE
Is this stopping me from completing the password reset when the switch is booting up??? All advice welcomed.
Regards,
PaddyIrishman

HI Paddy, [Pls Rate if HELPS]
"Transport Input None" command will prevent you from accessing the Device.
Refer link below for CISCO 2950 Swtich Password Recovery Procedure Document:
http://www.cisco.com/warp/public/474/pswdrec_2900xl.html
Refer step by step procedure (quick ref):
1. Unplug the power cable
2. Hold down the mode button while replugging the power cable
3. Type flash_init over the console
4. Type load_helper
5. Type Dir flash:
//make sure to type the semi-colons
6. Type rename flash:config.tdt flash:config.old
//the password is contained in the config.txt fil.e
7. Type boot
//this reboots the system
8. Type n to skip the initial setup config
9. Type enable
//this takes you to the enable mode
10. Type rename flash:config.old flash:config.txt
11. Save config.txt to system
#copy flash:config.txt system:running-config
12. Enter config mode and change the password
#cofig t
#no enable secret
//this applies only if the enable secret password was created
13. Finally write the changes to memory
#write memory
PLS RATE if HELPS
Best Regards,
Guru Prasad R

I am unable to maintain global settings in spend analytics UI,

Dear spend Analytics experts,
I am unable to maintain global settings in spend analytics UI,
Also I understood from the spend analytics material that the standard templates should be available as part of standard templates.
To give more info I follow data source methods from ECC to BI load data, the data is in BI now.. and also have maintained the table settings in BI (OPM_SOURCES)
In spend analytics UI I could see the data source quires as measures , dimensions but in data managements (global settings and template administration) unable to figure out what is the issues.
Pls let me know how do I get standard template in Spend analytics UI.?
Also let me know if u need more info to understand my issues, I really appreciate your help u2026
Rgds,
Raj

Thanks Rohit for your reply, sure i will check all the listed web services as you mentioned..
coming to datasurces config , I follow the process which is there in material to generate data sources.
FYI I have scheduled the data loads to BI until PSA.. its successfully loaded but still have to validate the data, I assume that we
have to load data until PSA, then use perform data load process form SPM UI.? Correct me if I am wrong?
.. Here is the list of datasource I have generated and replicated to BI
Z_SADSERPBUDGETS
Z_SADSERPBUYER
Z_SADSERPBUYINGORG
Z_SADSERPCATEGORY
Z_SADSERPCONTRACT
Z_SADSERPCOSTCENTER
Z_SADSERPGLACCOUNT
Z_SADSERPIVBSAK
Z_SADSERPIVBSIK
Z_SADSERPMGMTORG
Z_SADSERPPO
Z_SADSERPPRODUCT
Z_SADSERPSAGREEMENT
Z_SADSERPSITE
Z_SADSERPSLINE
Z_SADSERPSTDPRICE
Z_SADSERPSUPPLIER
Z_SADSERPTCURF
Z_SADSERPTCURR
Z_SADSERPTCURV
Z_SADSERPUOM
Regards,
Raj

My iPhone 5 quit ringing. I checked settings and the side switch. What now?

My iphone5 quit ringing. I've checked settings and the side switch. What now?

When you go to Settings > Sounds > Ringtones and tap on a ringtone, does it emit a sound then? If so, Go to Settings > Do Not Disturb and make sure it is OFF.
Next steps would be to back up your iPhone, then go to Settings > General > Reset > Reset All Settings.
If the issue continues still, restore the iOS. Last step would be to take it in for service.
Locate a Service location (choose your country in the top right)

Catalyst 2950 Switch flash_init error

Hi Everyone,
I'm new to Cisco products and have a small home lab set up. I have a Catalyst 2950 switch that I would like to restore to factory defaults. Here is the issue I'm having and can't figure out.
I pull the power, telnet into the console port, hold the mode button and restore power. The boot loader (Version 12.1(11r) starts and says the usual message the system was interrupted prior to flash initialization (Paraphrasing here)
I get to the switch: command line, enter flash_init. Flash states it initialized and then all I get is a < with an underscore under it prompt. Anything I try to type comes up as bizarre characters and I can not get back to a switch: prompt unless I reboot the switch manually. Unsure of what to do here.
Thanks in advance!
-Matt
Telnet session:
C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)
Compiled Mon 22-Jul-02 18:57 by antonino
WS-C2950T-24 starting...
Base ethernet MAC Address: 00:06:52:bb:c9:40
Xmodem file system is available.
The system has been interrupted prior to initializing the
flash filesystem. The following commands will initialize
the flash filesystem, and finish loading the operating
system software:
flash_init
load_helper
boot
switch: flash_init
Initializing Flash...
flashfs[0]: 4 files, 2 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 3726848
flashfs[0]: Bytes available: 4014592
flashfs[0]: flashfs fsck took 7 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4
õíííííí <---These characters appear no matter what keys I hit.

Hi mattymattlynch
Check the workaround on the following documents:
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/41845-192.html
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12-1_22_ea11x/configuration/guide/scg/swtrbl.html
If no luck , the flash might be corrupted and requires a replacement.
Hope this helps
-Randy-

Apple wired Dot1X - on Cisco 2950 switches

Hi, I have an issue with Apple desktop computers running 10.7 and 10.8 MacOS.
The problem is that we have only 2950 switches and we are very limited with what we can do on them, so we wanted basic DOT1X user authentication and VLAN placement. Those two are working great, except when user logs off, Mac stops sending DOT1X and port becomes unauthenticated. We alleviated that issue by using guest-vlan for failed dot1x authentications, but now we have a problem that once user logs in, there is no session change on 2950 and it doesn’t even try to authenticate user until we bounce the port.
Is there any way to fix this, on Cisco switch or Mac computer? One of the things that crossed my mind is bouncing port on Mac PC using some kind of logon script?
Has anyone else had this issue and was able to solve it?
Thanks.

Hello Align,
Cisco 2950 switch with 12.1(9) supports 802.1 x authentications. As you are saying that you already configured 802.1x authentication and its working fine. I think there is problem with your MAC OS configuration. Please follow the below link to configure 802.1x on Apple.
http://support.apple.com/kb/ht3326

Mail does not retain correct external server path for Exchange Server '07 even when "automatically detect and maintain account settings" is unchecked. Advice?

Mail keeps resetting the external server path for an Exchange server '07 account when the program is closed and reopened. This happens even though "automatically detect and maintain account settings" is unchecked. To reset to the correct setting I need to disable the account, make the change and save with the account disabled, close Mail, reopen Mail, and enable the account. Then the settings are maintained and Mail works great... until Mail is closed and reopened again. At that point the server path reverts to an incorrect setting. Anyone else experiencing this? Advice? I don't think this is a problem with the Exchange server because this problem did not happen with OS X Mavericks.

This this to fix repeated password requests....
Open Keychain Access in Applications/Utilities
Search for your Dreamhost accounts. There should be two entries (incoming, outgoing) for each account.
It's not uncommon to find old entries. You might want to delete all and start clean.The Keychain isn't smart and will keep all old entries when you add/change a password.
While you are in the Keychain run Keychain First Aid, Under Keychain Access in the Menu bar.
Open Mail
Open Connection Doctor.
If you see red for the account, enter the password again.
If you continue to have problems, delete the account then add it back.

DAQ Assistant: Clock Settings (Samples To Read, Rate) can affect signal readings?

Dear all,
I'm totally new to Labview, and recently I get confused with the equipment I'm dealing with.
Technical details:
The Labview version is 7.1; computer operate system is Windows XP;
The equipment has a NI PCI-6220 and a 68 Pin Connector Block to read signals from the equipment;
There are 4 channels in DAQ Assistant (2 pressure reading, 2 temperature reading);
For the first pressure reading, Signal Input Range from 4m to 20m Amps;
Clock Settings are Samples To Read = 5, Rate (Hz) = 20.
Description of the problem:
I use Labvew to monitor and record pressure readings and temperature readings. The Labview configuration was set up by my advisor several years ago. Recently, I found the pressure reading vibrated a lot; for example, 5.01 to 5.05 bar within a second. In order to get a stable pressure reading, my advisor suggested me to change "Clock Settings" in DAQ Assistant from Samples To Read = 5, Rate (Hz) = 20, to Samples To Read = 250, Rate (Hz) = 1000. In this case, she believed that since we increase sample numbers and sampling rate, we could have more data, and thus have stable pressure readings.
At first I could have very stable pressure reading. The last digit (0.01) did not change within 20 seconds. However, somehow after a day the pressure reading became unstable and even worse than previous. (pressure reading vibrates from 5.01 to 5.30 within a second)
This is not the worst case. We found that when we set Clock Settings: Samples To Read = 5, Rate (Hz) = 20, the pressure reading is about 8 bar. However, when we set Clock Settings: Samples To Read = 250, Rate (Hz) = 1000, the pressure reading is about 5 bar. In this case, we even don't know which pressure reading is correct.
Labview records current, and transforms it into pressure reading. Thus my advisor tried to monitor the current reading by Labview, and she found the current reading changed when she changed the Clock Settings. (0.004 Amps (5 bar) when Samples To Read = 5, Rate (Hz) = 20; 0.005 Amps (8 bar) when Samples To Read = 250, Rate (Hz) = 1000)
Since we only change the sample numbers and sampling rate, the average readings should still be similar. However, the reading are not similar. That is what confuses me.
My questions are, if Clock Settings in DAQ Assistant could affect signal readings? If so, how it could affect the signal readings? What is the effect of "Samples To Read" and "Rate (Hz)"? How to determine these parameters to get the true pressure readings?
Thank you very much for your help. Hope to have some feedbacks from you.
Best regards,
Cheng-Yu
Energy and Mineral Engineering
the Pennsylvania State University

A 6220 cannot read a current, it can only read a Voltage, so you'll probably have some (or should have) a resistor accros the voltage input. (normally 50 Ohm for a 0-20 mA signal).
My first step would be to measure this voltage with a multi-meter so you know what the actual voltage should be.
Then I would read that same voltage with MAX (measurement and automation explorer) to make sure you have the right value
Now about the changing of the voltage/current/pressure, how have you terminated the other signals? Have you provided a good earthing?
If you sample with a high frequency (1 kHz), perform an FFT on the acquired data, I can imagine a dominant 50 or 60 Hz (depends on where you live) in the signal that might cause your problem.
Ton
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!

Subscription Suspended because of clock settings! OUTRAGEOUS!

Hi,
I've paid for Adobe Creative Cloud, and when I don't have an internet connection my subscription is suspended. This is not good enough Adobe.
Sure my clock settings seem to reset after restart - but I have paid for my subscription! So let me use my program. When I restart and don't have an internet connection to update my clock my Creative Cloud is useless.
Either give me a refund for broken software, or update the way this works. I'm a paying customer, and your DRM is broken because of a clock! This is ridiculous, I'm not happy.
Regards,
Michael

Sorry, but since this is an open forum, not Adobe support... you need to contact Adobe staff to help
Adobe contact information - http://helpx.adobe.com/contact.html
-Select your product and what you need help with
-Click on the blue box "Still need help? Contact us"

Maintaining clock settings on a 2950 switch?

Similar Messages

Maybe you are looking for