vxlan tunnel-status track exact-route
Function
The vxlan tunnel-status track exact-route command enables subscription to the status of the exact route to a VXLAN tunnel destination.
The undo vxlan tunnel-status track exact-route command disables subscription to the status of the exact route to a VXLAN tunnel destination.
By default, subscription to the status of the exact route to a VXLAN tunnel destination is disabled.
Usage Guidelines
By default, a VXLAN tunnel is considered Up if its source IP address and the network segment where its destination IP address resides are reachable. In the real-world situation, when multiple destination IP addresses share the same network segment, this network segment is reachable if only one such destination IP address is reachable. As such, a VXLAN tunnel may be incorrectly considered Up even if its destination IP address is unreachable. Network problems then cannot be immediately identified. To resolve this problem, run the vxlan tunnel-status track exact-route command to enable subscription to the status of the exact route to a VXLAN tunnel destination. The VXLAN tunnel is then reported Up only when the exact route to the VTEP destination IP address is reachable.
The VXLAN tunnel status can be checked by running the display vxlan tunnel command.