The fact you have tried different ways of booting a correct IOS including tftpdnld -r and using other router's working CF card without success hints that probably, the RAM of your router may be damaged. This is, sadly, quite difficult to prove without an extensive memory test. We may try to use the following procedure but please be very careful not to do anything beyond what is explicitly shown here - otherwise, you may end up bricking your router for good.
What I am going to suggest here is using the built-in memtest feature of ROMMON. Before we can use it, however, we need to unlock the ROMMON to get access to more dangerous commands - that is why I explicitly warn against experimenting.
When in ROMMON, issue the cookie command. It will show you something like:
rommon 1 > cookie
04 ff c3 06 00 15 f9 76 75 f2 43 00 22 c1 8b 46
4f 43 30 39 34 33 30 31 46 53 40 04 1b 41 05 00
The cookie will be significantly larger. Now, take the first line and taking each two hexa numbers as a single two-byte integer, compute their sum in hexa, so in this case:
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...