Description
This article describes how to configure VXLAN over IPsec for multiple VLANs.
Solution
Virtual Extensible LAN (VXLAN) is a network virtualization technology used in large cloud computing deployments.
It encapsulates OSI layer 2 Ethernet frames within layer 3 IP packets using standard destination port 4789.
1) WAN interface configuration.
This configuration is focused on how to configure two or more VLANs which can be used with VXLAN to extend the Layer2 connectivity across two different locations.
2) Make sure that connectivity between both FortiGate’s is working in to bring the IPsec tunnel up.
3) Configuring IPsec VPN tunnel.
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FGT1 |
FGT2 |
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Phase1 config:
config vpn ipsec phase1-interface edit "ipsec" set interface "wan1" set peertype any set net-device disable set proposal aes256-sha1 set remote-gw 1.1.1.2 set psksecret xx next end
Phase2 config:
config vpn ipsec phase2-interface edit "ipsec" set phase1name "ipsec" set proposal aes256-sha1 set auto-negotiate enable next end
Tunnel interface config:
config system interface edit "ipsec" set vdom "root" set ip 2.2.2.2 255.255.255.255 set allowaccess ping set type tunnel set remote-ip 2.2.2.1 255.255.255.252 set snmp-index 20 set interface "wan1" next |
Phase1 config:
config vpn ipsec phase1-interface edit "ipsec" set interface "wan1" set peertype any set net-device disable set proposal aes256-sha1 set remote-gw 1.1.1.1 set psksecret xx next end
Phase2 config:
config vpn ipsec phase2-interface edit "ipsec" set phase1name "ipsec" set proposal aes256-sha1 set auto-negotiate enable next end
Tunnel interface config:
config system interface edit "ipsec" set vdom "root" set ip 2.2.2.1 255.255.255.255 set allowaccess ping set type tunnel set remote-ip 2.2.2.2 255.255.255.252 set snmp-index 20 set interface "wan1" next |
4) This configuration will bring the IPsec tunnel up. Verify it as well.
5) Configure VLAN interfaces.
6) Configure VXLAN interfaces for both VLANs.
7) Configure software switch-interface:
8) Test the connectivity by pinging client connected to VLAN50 on 'SW1' towards the client connected on vlan50 on 'SW2'. Also test the connectivity from client connected on VLAN50 on 'SW2' towards client connecting on VLAN50 on 'SW1'.
9) Repeat the same test for client in VLAN60.
10) In this setup, no firewall policies would be required. The reason for this is the option 'set intra-switch-policy implicit' configured under 'config system switch-interface' for both VLANs.
11) If there is a requirement to use firewall policies, this option needs to be changed.
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