Dear All, We have established a site-to-site VPN between a non-Meraki peer, specifically a Cisco 800 series, and a Cisco 900 series device. The VPN is configured using IKEv1 with dynamic names, as we do not have static IPs. Our headquarters is identified by the dynamic name MX105, and it is also using a cloud dynamic name. Both sites connect perfectly; however, after approximately 10 hours, the tunnel drops. When I checked the status with the command "show crypto isakmp sa," I noticed that the source and destination are in QM-IDLE, with both phases 1 and 2 still up. It appears that the Meraki device is not sending any traffic. After I disabled the crypto map and reinserted it, the tunnel re-established successfully. Meraki advised me to upgrade the firmware to the most current stable version, which is MX 19.1.10, but the tunnel still went down after the same 10-hour period. I have since raised a follow-up ticket for further assistance.As my router does not have NAT TRAVERSAL and NAT T is automatic on Meraki i believe disabling no nat or nat exemption will solve the problem. please let me know if anyone has resolved the problem.
... View more