I have hit a very teething problem with DMVPN. The issue is if I have two tunnels at the Hub and Spoke routers, and if I shutdown one tunnel at the Hub, the Spoke routers still think that tunnel is UP. This is true considering all tunnels are mGRE tunnels so as long as the physical interface remains UP, the tunnels will remain UP.
However, I am looking for a trick where the Spoke routers react to failure of a tunnel on Hub router. For a sample diagram, please use this URL. Please note the configuration on that page is incomplete.
Introduction: The "external-out enable" command is available for
configuration under the "router ospf process" in case of the IOS-XR
operating system. This command basically enables advertisement of
intra-area routes on the device as external routes in th...
Introduction Basic configuration for netflow Scale parameters for
netflow Netflow support Architecture Packet flow for netflow Inside the
LC CPU Netflow Cache size, maintenance and memory Sample usage Cache
Size Aging Permanent cache Characteristics Which...