Settings lost after reboot (1841)

[cdavies74]

After learning the basics of this router over the past few days I can't get the actual setup/settings to remain saved after the router has been shut down for a day or two (still learning and experimenting).

Having set it up the way I want it, both through console and SDM I either save the config through SDM or "wr me" through the console and the settings are saved without any issues.

However, whenever I've turned it off and then on again I get the "Would you like to enter initial configration dialog? [yes/no]". I've always chosen "no". I get the message that the router has undergone a cold start and my interfaces are set in a administratively down state.

Doing a "show running-setup" reveals all of my settings have been reset.

What am I doing wrong?

[route2null]

Your config register is probably set to bypass the startup config. Do a "sh ver" and post the output.

[cdavies74]

Router>sh ver

Cisco IOS Software, 1841 Sofware (C1841-IPBASE-M), Version 12.4(7d), RELEASE SOFTWARE (fc2)

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

Router uptime is 34 minutes

System return to ROM by power-on

System image file is "flash:c1841-ipbase-mz.124-7d.bin"

Cisco 1841 (revision 7.0) with 114688/16374K bytes of memory.

Processor board ID FCZ1251943K

2 FastEthernet interfaces

1 Channelized (E1 or T1)/PRI port

DRAM configuration is 64 bits wide with parity disabled.

191K bytes of NVRAM

31360K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2142

Router>

[route2null · Accepted solution]

This is your problem... "Configuration register is 0x2142" This tells the router to bypass the startup config.

To fix go into config mode and enter "conf reg 2102" do a "wr mem" then reload

[cdavies74]

Thank you very much route2null.

It's rather hard to know these things since they really aren't that well documented.

Thanks again.

[Jon Marshall]

Craig

Just for future reference you may want to have a look at this link which goes into detail on all the configuration register values and what they mean -

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml

Jon

[cdavies74]

Thanks Jon, bookmarked.

[m-gajdel]

Hi All,
How to save startup settings in the C3850 switch:
1. Switch>enable
2. Switch#config t
3. Switch(config)#config-register 0x102
4. Switch(config)#exit
5. Switch#write memory
6. Switch#reload

“copy running-config startup-config”  doesn’t work either, still I see:
"Would you like to enter the initial configuration dialog? [yes/no]:"
and my hostname is olways “Switch”,

My show info:
Model Number                       : WS-C3850-48U
System Serial Number               : FOC2013X006
Switch Ports Model              SW Version        SW Image              Mode

------ ----- -----              ----------        ----------            ----

*    1 56    WS-C3850-48U       03.06.07E         cat3k_caa-universalk9 INSTALL

Configuration register is 0x142 (will be 0x102 at next reload)