All OSPF routers continue to multicast HELLOS to 220.127.116.11, so they can keep track of their neighbors.
DROTHERs will send multicast updates to 18.104.22.168 (DR/BDR listen). DR will flood multicast updates to DROthers on 22.214.171.124.
Please note multicast hellos are always send to 126.96.36.199 and all OSPF routers [DR/BDR/DRother] listen to this address for hellos. So since everybody's listening it is easy to detect failure of any router, including your question, failure of DR by BDR.
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 ...