contact snmp-server enable traps snmp authentication linkup linkdown coldstart no crypto isakmp nat-traversal
排查时需要在VPN两端设备同时开启NAT-Traversal NAT穿越功能,同时开启Keepalive心跳保活机制,维持隧道长连接,定时检测链路连通性,防止链路静默断开、报文传输异常。
000 "ecs": liveness: active; dpdaction:restart; dpddelay:60s; retransmit-timeout:60s 000 "ecs": nat-traversal
McGuire <rlpm&apple.com> 24 September 2010 # 4489-4499 Unassigned ipsec-nat-t 4500/tcp IPsec NAT-Traversal ipsec-nat-t 4500/udp IPsec NAT-Traversal # [RFC3947] # Reserved # 10322-10499 Unassigned # 10500/tcp Reserved hip-nat-t 10500/udp HIP NAT-Traversal Volpe, "Negotiation of NAT-Traversal in the IKE", RFC 3947, January 2005.