What Are the Causes for a GRE Tunnel Establishment Failure?

Created Jan 14, 2017 23:28:44Latest reply Jan 15, 2017 00:14:27 786 1 0 0

The causes for a GRE tunnel establishment failure are as follows:

  • Interfaces on both ends of a tunnel use different tunnel encapsulation modes.

  • An IP address, a tunnel source address, and a tunnel destination address are not configured for interfaces on both ends of the tunnel. The source address of one end is not the destination address of the other end.

  • There is no reachable route between the tunnel source and destination addresses.

  • Keepalive detection is configured, but parameters on both ends of a tunnel are inconsistent.

  • GRE key configurations on both ends of a tunnel are inconsistent.


  • x
  • convention:

user_2790689  Expert   Created Jan 15, 2017 00:14:27 Helpful(0) Helpful(0)

thank you
  • x
  • convention:

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