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Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
Community Member

ASA5505 Hung - Reboots

I recently acquired a ASA5505 and have encountered the following issue:

After upgrading the ASA to 831 and ASDM to 6.31, system has been encounting the issue mentioned earlier.  Is there anyway I can reset back to Factory defaults and attempt another image from RMON Boot?

System consistently stops as shown below:

Embedded BIOS Version 1.0(12)13 08/28/08 15:50:37.45

Low Memory: 632 KB
High Memory: 507 MB
PCI Device Table.
Bus Dev Func VendID DevID Class              Irq
00  01  00   1022   2080  Host Bridge
00  01  02   1022   2082  Chipset En/Decrypt 11
00  0C  00   1148   4320  Ethernet           11
00  0D  00   177D   0003  Network En/Decrypt 10
00  0F  00   1022   2090  ISA Bridge
00  0F  02   1022   2092  IDE Controller
00  0F  03   1022   2093  Audio              10
00  0F  04   1022   2094  Serial Bus         9
00  0F  05   1022   2095  Serial Bus         9

Evaluating BIOS Options ...
Launch BIOS Extension to setup ROMMON

Cisco Systems ROMMON Version (1.0(12)13) #0: Thu Aug 28 15:55:27 PDT 2008

Platform ASA5505

Use BREAK or ESC to interrupt boot.
Use SPACE to begin boot immediately.

Launching BootLoader...
Boot configuration file contains 1 entry.

Loading disk0:/asa831-k8.bin... Booting...
Platform ASA5505

Àdosfsck 2.11, 12 Mar 2005, FAT32, LFN
Starting check/repair pass.
Starting verification pass.
/dev/hda1: 102 files, 12251/31033 clusters
dosfsck(/dev/hda1) returned 0
IO memory 39583744 bytes

Processor memory 382824448, Reserved memory: 62914560 (DSOs: 0 + kernel: 62914560)

Total SSMs found: 0

Total NICs found: 10
88E6095 rev 2 Gigabit Ethernet @ index 09 MAC: 0000.0003.0002
88E6095 rev 2 Ethernet @ index 08 MAC: c84c.7541.5204
88E6095 rev 2 Ethernet @ index 07 MAC: c84c.7541.5203
88E6095 rev 2 Ethernet @ index 06 MAC: c84c.7541.5202
88E6095 rev 2 Ethernet @ index 05 MAC: c84c.7541.5201
88E6095 rev 2 Ethernet @ index 04 MAC: c84c.7541.5200
88E6095 rev 2 Ethernet @ index 03 MAC: c84c.7541.51ff
88E6095 rev 2 Ethernet @ index 02 MAC: c84c.7541.51fe
88E6095 rev 2 Ethernet @ index 01 MAC: c84c.7541.51fd
y88acs06 rev16 Gigabit Ethernet @ index 00 MAC: c84c.7541.5205
Encryption hardware device : Cisco ASA-5505 on-board accelerator (revision 0x0)
                             Boot microcode   : CN1000-MC-BOOT-2.00

Any help/assistance would be greatly appreciated.



Re: ASA5505 Hung - Reboots

You will need to setup a tftp server to load the code and boot the asa from it, then when you are actually in the firewal and be able to login, you need  to  tftp the image you want onto disk0, as the code you load in rommon is in RAM. When you get to the point of tftp the code to disk0 do not  forget to update your boot statement to point to the right imaged in disk0

Follow this process

As for the ASA5505 Hung  try re-downloading a fresh code, make sure when you download the code verify its md5 has integrity as code may have been corrupted during its download,  here is a good thread  on how to very code integrity

If downloading a newly fresh code and still fw hungs with code 8.3.1   I  suggest open a   TAC case if you have SMARTnet services.


Community Member

Re: ASA5505 Hung - Reboots

Thanks..  I will try that..   The image I uploaded to FW was from the CD from package so I doubt it would have b

een corrupt.   Loaded it using ASDM.    Left the ASA un-plugged for 10  minutes and powered it up and now works.

Is there a heat issue or anything like that relating to Power Supply or unit itself?

Thanks for your response..  Will let you know what happens.


Cisco Employee

Re: ASA5505 Hung - Reboots

Did the unit record a crash? "sh crash" show any output? If so, it could be a software defect. If it doesn't record a crash and reloads

at random times, pls. open a TAC case and request an RMA.


Community Member

Re: ASA5505 Hung - Reboots

It only shows the following:

ciscoasa> en
Password: ********
Invalid password
Password: *********
ciscoasa# sho crash
No crash file found.

------------------ show crashinfo module 1 ------------------

INFO: There is no module in slot 1 to retrieve crashinfo from.
INFO: This module has no crashinfo available.

It is working now since I powered the unit off for 15 minutes..   Just dont want this to occur again later since I just purchased it I want to get it RMA under warranty if this is the case.  Is there anything else to run in terms of diagnostics for reseller as I don't have a Service Agreement.

Cisco Employee

Re: ASA5505 Hung - Reboots


I tried changing just the power supply and a 5505 still reloaded at random times and did not record a crash.  I got the unit replaced and that took care of the problem. I suggest you open a TAC case if you have smartnet and get the unit replaced it it continues to just reload at random times.


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