IPSec VPN tunnel establishment has two phases and hence the configuration is usually made up of two sets of configuration. The terminology used to define the two phases differs from vendor to vendor and also differs based on the IKE version used. Phase1, ISAKMP, IKEv1, IKEv2 or IKE are some of the common terms used to refer to the class of
VPN Tunnel is established, but not traffic passing through; Intermittent vpn flapping and disconnection; Most of time, the remote end tunnel may be configured by a different engineer, so ensure that Phase-1 and Phase-2 configuration should be identical of both side of the tunnel. It would be helpful if we can use a common vpn template and IPsec VPN Overview - TechLibrary - Juniper Networks SRX Series,vSRX. IPsec VPN Overview, IPsec VPN Topologies on SRX Series Devices, Comparison of Policy-Based VPNs and Route-Based VPNs, Understanding IKE and IPsec Packet Processing, Understanding Phase 1 of IKE Tunnel Negotiation, Understanding Phase 2 of IKE Tunnel Negotiation, Supported IPsec and IKE Standards, Understanding Distributed VPNs in SRX Series Services Gateways … Troubleshoot VPN Tunnel Phase 1 (IKE) Failures Jun 18, 2019 Solved: Site-to-Site VPN issue, Phase-2 is not - Cisco
Configure Site to Site IPSec VPN Tunnel in Cisco IOS Router
Troubleshoot VPN Tunnel Phase 1 (IKE) Failures Jun 18, 2019 Solved: Site-to-Site VPN issue, Phase-2 is not - Cisco Dec 12, 2012
In the Tunnel Management menu you can define how to setup the tunnel. Note: The recommended tunnel sharing method is one VPN tunnel per subnet pair (default). This shares your network on either side of the VPN and makes the Phase 2 negotiation smooth. It also requires fewer tunnels to be built for the VPN.
Configuring Cisco Site to Site IPSec VPN with Dynamic IP Creating Extended ACL. Next step is to create an access-list and define the traffic we would like the router to pass through each VPN tunnel. In this example, for the first VPN tunnel it would be traffic from headquarters (10.10.10.0/24) to remote site 1 (20.20.20.0/24) and for the second VPN tunnel it will be from our headquarters (10.10.10.0/24) to remote site 2 (30.30.30.0/24).