RouterOS 7.1beta6 - GRE Tunnel does not work with non Mikrotik devices (fix)

Small advice for all users trying to create a simple GRE Tunnel to a non Mikotik device under the current beta version.
If the tunnel does not come up, disable the keepalive setting for the tunnel interface. This is a proprietary Mikrotik implementation which does not work with other common GRE tunnel implementations.
Hope this helps.
Best regards
@colinardo
If the tunnel does not come up, disable the keepalive setting for the tunnel interface. This is a proprietary Mikrotik implementation which does not work with other common GRE tunnel implementations.
Hope this helps.
Best regards
@colinardo
Please also mark the comments that contributed to the solution of the article
Content-ID: 965439970
Url: https://rootdb.com/knowledge/routeros-7-1beta6-gre-tunnel-does-not-work-with-non-mikrotik-devices-fix-965439970.html
Printed on: March 26, 2025 at 11:03 o'clock
1 Comment
Thanks for this feedback !
Added this advice to the GRE_Tunnel_Tutorial as well.
Btw. Cisco supports a GRE keepalive too but did NOT recommend to use it, cause of some major protocol drawbacks:
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulat ...
Added this advice to the GRE_Tunnel_Tutorial as well.
Btw. Cisco supports a GRE keepalive too but did NOT recommend to use it, cause of some major protocol drawbacks:
https://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulat ...