A lot of caveats similar to this message but not specifically for 3640 and IOS and exact message.
Here are the lists of possible problems
Most of them no workaround (specially DMVPN). All of them are known bugs, but you mentioned that you can't update your IOS image.
[EDIT] If you want to search them, search "%SYS-2-BADSHARE: Bad refcount in datagram_done" and also look for "Traceback" in the results. Without "datagram_done" the search may direct you to hardware problem.
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 ...