We use virtual link where some areas have not a direct connection to the backbone area (Area 0). So here in what you sent, area 2 does not have a connection to Area 0, so virtual-link is necessary.
Router 3 has not a direct connection to Area 0 actually, but It thinks that it has a direct connection to Area 0 through Virtual links. All communication between Router 1 and Router is tunneled through virtual link thats why u see that is indicated "0" in the Router 3's routing table.
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 ...