There really is no such thing as a "Spanning tree Loop;" The two possibilities that come to mind would be a mismatch (IEEE Spanning Tree on some units, and IBM Spanning Tree on others) or a/some switches / bridges that aren't running Spanning Tree, and there could be a Layer Two loop .... which usually shows up as the activity LEDS going from occasional / random blinking to solid on (as the traffic levels build as the result of the loop).
The time span from random to solid will vary somewhat, depending on the traffic levels, but it's generally pretty quick (seconds, if that long).
As far as the logs, I believe you'd get messages saying that the switch is / is not receiving BPDUs from the neighbor switch at xx.xx.xx.xx.xx.xx (MAC).
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 ...