Tunnel gre fortinet

Tunnel gre fortinet. 1. #config system gre-tunnel #delete "gre interface". 16. May 26, 2020 · CLI configuration of FortiGate 60: config system gre-tunnel edit "tofg30" set interface "wan1" set local-gw xxx. 127 Mar 14, 2020 · FortiGate and GRE tunnel. This basically means any traffic sent to the tunnel interface will be stuffed it in a Nov 8, 2010 · The tunnel gre is up but the fortigate that has the ipsec and the gre tunnel can not ping the peer tunnel ip of the other router. Configure GRE-Tunnel. Support for VxLAN over IPsec was added in FortiOS 5. As i read on different pages, i understanded that there is a difference between IPsec over GRE and GRE over IPsec. g ( assuming you had loopback with 192. config system settings set allow-subnet-overlap enable end; Configure the WAN interface and static route. Can anyone know that compatibility of gre tunnel with cisco or Am I missing configuration. Click Create New. Synopsis. As far as I know, there's an overhead at the beginning of these packets depending the type of encryption used, so it wouldn't be possible to do this. Then both show up in the routing-table then your PBR would work. 4, VXLAN is only supported as an encapsulation method within the configuration of an IPsec tunnel. 0 MR1(v4. Jan 13, 2016 · Hi everybody! Just a short question. Cisco GRE-over-IPsec VPN. Notes. 1 next edit "tun2" set remote-gw 199. A customer is asking us if it is possible to change the size of the mtu packets to 1500 in a gre tunnel. set interface "port1". For some reasons, my company perfers GRE tunnel. 0 to 5. y' is used to monitor IPsec VPN Phase2. Support for configuring TCP MSS in firewall policies was added in FortiOS 3. - Configure GRE-Tunnel. x to v7. 4: Use IPv4 addressing for gateways. GRE over IPsec. 255 ! An overlay IP is mandatory for the static route over the tunnel tunnel source GigabitEthernet1/0 tunnel destination 198. With diagnose sniffer I can see that traffic is only inbound and not outbound. To configure an IPsec tunnel: Go to VPN > IPsec Wizard. 51. I would like to share with you what is required if you configure it on FortiGate. Minimum value: 0 Maximum value Apr 25, 2021 · Technical Tip: BGP over GRE. In FortiOS 5. In the Interface drop-down, select +VPN. Config: config system gre-tunnel edit “GRE-to-Filtering” set interface “wan1” set remote-gw x. A link-monitor can be configured to monitor the GRE tunnel interface via the following command: config system link-monitor. The below logs can be collected to confirm the issue: Running sniffer on FortiGate will show that the traffic is sent out but the traffic is not received on the other end: Jan 24, 2008 · We need to configure a GRE tunnel between two FGT1000AFA2s. edit "GRE_TUNNEL" set interface "port1" set remote-gw 5. Configuring IPsec or GRE tunnels on FortiOS. FortiGate <<GRE>> cisco. Number of consecutive unreturned keepalive messages before a GRE connection is considered down. 27. edit "toFG2". size[15] set interface {string} Interface name. 200 is the Cisco LAN interface. Steps. 125. To configure OSPF with IPsec VPN to achieve network redundancy using the CLI: 1) Configure the WAN interface and static route. 0 MR2. Jan 29, 2008 · We need to configure a GRE tunnel between two FGT1000AFA2s. In the example, you would enter: config system gre-tunnel edit gre1 set interface tocisco set local-gw 172. fortinet but i am confused. 12. Hover over the leftmost edge of the column heading to display the Configure Table icon, which you can use to select the columns to display or to reset all the Aug 2, 2021 · How to configure GRE Tunnel on Fortigate FirewallReference: https://techtalksecurity. This is an example of GRE over an IPsec tunnel using a static route over GRE tunnel and tunnel-mode in the phase2-interface settings. end . - Copy the GRE Gateway IP addresses of the two closest Netskope POPs. 252 ip nat outside ip virtual-reassembly tunnel source 192. After upgrading FortiGate from v7. 20 (fgVpnTunEntStatus). 1 Kudo. Both of them are used as indexes in the VPN tunnel list Create or edit a GRE tunnel. - The goal is to establish a GRE over IPsec tunnel between Oct 26, 2021 · It is expected to see the Tunnel SA MTU as 1280 when there is no traffic flow. answered Apr 12, 2023 at 16:11. x — Remote firewall WAN IP set local-gw y. I make sure the routing is okay May 30, 2024 · From my personal deduction, GRE is still possible on FortiOS (but IPsec is recommended) just for compatibility with old fashion networks. After connection, all traffic except the local subnet will go through the tunnel FGT. We are having trouble getting all of the parameters set correctly. 1 255. Parameter Name Description Type Size; interface: Interface name. 10. config system gre-tunnel edit {name} # Configure GRE tunnel. I found some documentation about this at docs. 2 set local-gw 10. To configure GRE over an IPsec tunnel: Enable subnet overlapping at both HQ1 and HQ2. 141 set remote-gw 192. edit "1". 111. Jul 5, 2022 · Initially, FortiGate will get the interface MTU value as the PMTU value for the GRE tunnel. It is found that the poor performance SLA of the GRE tunnel between two fortigates ( often some percentage of packet loss often found, while the internet lines are running well - no packet loss May 23, 2024 · New in fortinet. interface Mar 8, 2020 · 1 Solution. IPsec VPN to Azure with virtual network gateway. Support for IPsec “encapsulation gre” is available as of FortiOS 5. 176. Support for IPsec in transport-mode is available as of FortiOS 4. Minimum value: 1 Maximum value: 255. x. 7. set srcintf <GRE-Tunnel-Name>. May 12, 2011 · Hi i have a fortigate310b,the version is 4. Once traffic starts flowing through the tunnel, SA MTU will be calculated automatically using various methods. I want it to be 1356 for this state when ipsec is off. 194. Support for IPsec in transport-mode is available as of FortiOS 4. 1 FG300B (gre) # end unexpected to change gateway address! attribute set operator error, -61, discard the setting Command fail. Configuration: CLI configuration of FortiGate 1. 1, 2 is the GRE tunnel source. R oll back solves the issue. Select Create New to open the Create Gre Tunnel page. Configuring GRE and IPSec Tunnels on ZIA There are three major steps when configuring GRE or IPsec tunnels to ZIA. Use this command to configure a GRE Tunnel for your FortiGate, to allow remote transmission of data through Cisco devices that also have a GRE Tunnel configured. 121 and you snat these behind the wan interface) May 26, 2020 · CLI configuration of FortiGate 60: config system gre-tunnel edit "tofg30" set interface "wan1" set local-gw xxx. I've traced the issue to the Fortigate equipped site. 3 next end config firewall policy edit 0 set srcintf "internal" set dstintf "tofg30" set srcaddr "all" set dstaddr "all" set action accept set schedule "always" set service "ALL" next edit 0 set Nov 5, 2017 · THE PING TEST: To find the optimum MSS/MTU value of the network, do the 'ping test' to find the MTU and then reduce 40 from that value and set that as tcp-mss in the firewall policy. y — Local FW WAN1 IP next end Nov 25, 2014 · Hi, you can view the gre tunnel status using the following commands . Wes Oct 16, 2022 · 0. To monitor GRE tunnels. Jan 6, 2022 · GRE tunnel via existing IPSEC tunnel. Mar 10, 2017 · This article describes how to configure and troubleshoot a GRE over an IPsec tunnel between a FortiGate and a Cisco router. Recently I worked on one project where a client requested to re-route web traffic to the GRE tunnel to perform traffic inspection. key-inbound * Require received GRE packets contain this key. Enter the name to identify the GRE tunnel. 25. Click Next. edit "GRE_TUNNEL" Mar 9, 2014 · Hi, I need to configure an IPsec over GRE tunnel between a Fortigate and a Cisco (Cisco is not administrated by us, and this type of tunnel was asked). Enter the settings according to the table below for both the service provider IPs and your terminating IPs. xxx-store is the GRE interface Name. 172. The following commands is to view the MTU of GRE tunnel: diagnose ip rtcache list Mar 10, 2017 · Description. Keepalive message interval. IPsec VPN to an Azure with virtual WAN. Configuring the VPN overlay between the HQ FortiGate and AWS native VPN gateway. Jan 31, 2017 · This article describes how to build a Layer-2 VPN between two FortiGates using VxLAN over IPsec. Setting. All IP addresses configured for the tunnel must be unique; these IP addresses define the endpoints of the tunnel, with the controller Oct 3, 2022 · This article describes how to monitor the individual VPN by SNMP (OID). 4999. MTU gets even smaller if over you are tunneling over an IPSEC tunnel. size[15] - datasource(s): system. 128 set transform-set tr-fortinet-transport set pfs group5 match address cryptoFORTINET! interface Tunnel1 ip address 10. 168. There is no default value. Hello, We have an existing VPN site to site in hub n spoke with IPSEC. 128! interface Loopback1 ip address 100. I have succesfully established the IPSEC tunnel, but i have not found where to configure the GRE Tunnel settings. Nov 14, 2014 · config system gre-tunnel edit "tun1" set remote-gw 199. Jun 2, 2016 · This is an example of GRE over an IPsec tunnel using a static route over GRE tunnel and tunnel-mode in the phase2-interface settings. 101. Configuring the VPN overlay between the HQ FortiGate and cloud FortiGate-VM. Let's start with phase-1, identifying devices among themselves, by a predefined IP Feb 13, 2024 · GRE Tunnel not working after 7. x is phase1 serial and y is phase2 serial. CLI configuration of the FGT-A: (Same configuration needs to be done on FGT-B with required IP changes) config system gre-tunnel edit "gretunnel" set interface "port1" set remote-gw 10. In remote sites (spokes) , we have Aruba Access points that have to mount a GRE tunnel to an Aruba Wireless Controller in central site (hub). It has created its interface but that inter face is not showing as connected interface at dc end while at remote site it is showing as connected interface in routing table. 590602 ike 0:aPacheco-W1:aPacheco-W1: IPsec SA connect 5 PublicIpFGT->PublicIpMKT:0 Site-to-site VPN with digital certificate. X, traffic via the GRE tunnel may be dropped. Go to Network > GRE Tunnel to see which GRE tunnels have been configured. set local-gw 1. Interfaces show status up, but traffic is not encapsulated when needs to go outbound. com/2021/08/fortigate-firewall-gre-tunnel. View solution in original post. Also I have seen that the route for data that should travel through the GRE tunnel is not installed Apr 22, 2016 · A GRE (Genereic Routing Encapsulation) is a tunneling protocol that allows data to be encapsulated and sent over a simulated point-to-point link. The Create IPsec VPN for SD-WAN members pane opens. Scope. R1's and R2's Internal subnets(192. Configuring the VIP to access the remote servers. end. Solved: Hi everybody! Just a short question. 5 however suffers these limitations:- only IPsec in tunnel-mode is supported (no support for IPsec in transport-mode),- the traffic selectors Mar 25, 2014 · The problem occurs in the case that i would like to add another tunnel under the same WAN IP as for 1st GRE tunnel. In this case is a problem that first tunnel is working correctly and other one is not working correctly. Further more, Loopback interface IP need Use the credentials you've set up to connect to the SSL VPN tunnel. We need a new GRE interface and policy base routing (PBR) to change the route for specific May 29, 2024 · I have enabled pmtu-discovery as per instructions from this topic Dynamic MTU Configuration in SD-WAN Deplo - Fortinet Community but MTU on the GRE tunnel remains 1476. set local-gw 198. You cannot edit the name after you create the GRE tunnel. 0,build0194,100121 (MR1 Patch 3)), and i have a internet exit to connect fortigate port3, and port8 connect to lan switch. The SA MTU will be updated after the first packet traverse the tunnel. 623. one side of that mikrotik - fortigate link is discarding ldap traffic s Nov 10, 2020 · Because the GUI can only complete part of the configuration, using the CLI is recommended. Hi, guys, I am using Fortigate 400E, 600E with FortiOS v6. Oct 14, 2009 · The GRE interfaces will be numbered and remote subnets learned via OSPF. 8 <- The remote side IP. 20 hours ago · Create the GRE Tunnel in Netskope: - Navigate to Settings > Security Cloud Platform > GRE. (2) I see the unencapsulated ICMP request cross Redirecting to /document/fortiproxy/7. Support for GRE tunneling was added in FortiOS 3. IPSec VPN between a FortiGate and a Cisco ASA with multiple subnets. Configuring the SD-WAN to steer traffic between the overlays. 0 MR4. Sep 26, 2023 · Configuration on FortiGate 1: For the GRE tunnel: config system gre-tunnel. 3build2573) to a remote site with a Debian 12 server acting as a gateway device using the following publications as a guide: Nov 23, 2023 · I have site to site connection over the GRE tunnel it was working fine but now the GRE point to point IP is only ping . blogspot. 2 and V6. I make sure the routing is okay Apr 3, 2019 · - GRE will be used only for exchanging routes over the internet from the remote peer using an IGP protocol over the GRE tunnel. 6: Use IPv6 addressing for gateways. than i have to establelish a gre tunnel with cisco router for malaysia vpn, here is my firewall config: edit " gre" set inter OID for monitoring IPsec tunnel statusScope Solution IPsec tunnel status can be monitored by OID. Does anyone have a complete example that works. 12356. Mar 22, 2024 · Hi, I've built a site to site GRE tunnel between an HA pair of Fortigate 101F devices (Firmware: 7. The Generic Routing Encapsulation (GRE) tunnel allows direct communication between two nodes on a network. You must locate which data centers are available to you and the hostname / IP address of the VIP to establish a tunnel towards. For Apple MAC OS client enter: ping -D -s <size> <server_ip>. Mar 1, 2016 · The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges. Don't send the distance higher for the 0/0 route into the tunnel. Wes You can configure FortiGate to forward traffic to Zscaler SSE via GRE or IPSec tunnels. Further more, Loopback interface IP need Jan 13, 2016 · Exactly! Apparently the FG even does a sanity check for you :). 0/24 and 192. 3 next end config firewall policy edit 0 set srcintf "internal" set dstintf "tofg30" set srcaddr "all" set dstaddr "all" set action accept set schedule "always" set service "ALL" next edit 0 set Mar 8, 2021 · Let's assign an IP address to the GRE tunnel. 6. These must be separate from the /24 that was diverted to the Service Provider. Go to IP-> Addresses -> +. Assigning IP to tunnel interface in order to establish PIM neighborship: config system interface. config system gre-tunnel Description: Configure GRE tunnel. HQ1. Topology. 4“encapsulation gre” implementation in FortiOS from 5. - Configure BGP. Fortinet Documentation Library Oct 4, 2012 · crypto map vpn-fortinet 1 ipsec-isakmp set peer 192. This article describes how to configure and troubleshoot a GRE tunnel between two FortiGates. Configure the GRE Tunnel in FortiGate: Mar 2, 2017 · IP-in-IP tunnel interface interface Tunnel0 ip address 10. 1 Apr 20, 2022 · Go to Network -> SD-WAN, select 'Create New' -> SDWAN Member. 52. If I ping a host in my local network from the remote site I can observe the following: (1) I see the a protocol 47 packet arrive on the "wan1" interface of my Fortigate. Makes a maximum tunnel MTU of 1476. Select a GRE tunnel and then click Edit to open the Edit Gre Tunnel page. 1 set local-gw 10. We need to running some multicast traffic between sites. Improve this answer. Go to Global Protection > GRE Tunnel Endpoint. The VPN Creation Wizard displays. 113. 1 tunnel mode ipip ! SNAT for Internet Access ip nat inside source list natAcl interface GigabitEthernet1/0 overload Nov 3, 2008 · Good Afternoon, I have a Fortigate 60, and Im trying to configure GRE Tunnel over an IPSEC Tunnel. 1 next end But once you place these into a tunnel, you can nail a policy to just one tunnel, but it will allow you to add or remove tunnels if the need comes up. For example, if a FortiGate setup a GRE tunnel on a WAN interface with a default MTU which is 1500, it will get the MTU value as 1500 for GRE tunnel. 120. For MS Windows OS client enter: ping -f -l 1472 <server ip>. 2' is used to get the IPsec VPN Phase1 name and OID '1. The beauty of it is that it will encapsulate many different types of traffic and De-encapsulate it on the other. Hover over the leftmost edge of the column heading to display the Configure Table icon, which you can use to select the columns to display or to reset all the Source IP address(es) of the Service Provider’s GRE tunnel(s). To configure GRE tunnels on ZIA: Locate the available data-centers and the hostname/IP address of the VIP to which you will establish a tunnel; go to Locating the Hostnames and IP Addresses of Zscaler Enforcement Nodes (ZENs) . GRE can also be configured from E (z)RF Network Manager. This module is able to configure a FortiGate or FortiOS (FOS) device by allowing the user to set and modify system feature and gre_tunnel category. When i sniff i saw the comin packet from the other router arriving thru the tunnel but the fortigate with the ipsec and gre tunnel does not answer back. 2 or 7. integer. Examples. Site-to-site VPN with overlapping subnets. But recently I have purchased 100D for HO Office and I have tried established gre tunnel but unfortunately gre tunnel could not be established. edit <name> set auto-asic-offload [enable|disable] set checksum-reception [disable|enable] set checksum-transmission [disable|enable] set diffservcode {user} set dscp-copying [disable|enable] set interface {string} set ip-version [4|6] set keepalive-failtimes {integer} set keepalive Dec 27, 2019 · To monitor GRE tunnel states, there is no option available in Log & Report from the GUI. In this case, you will configure either IPsec tunnels or GRE tunnels, and not both. 1. The entries will be displayed on the GRE Tunnel Endpoint list page. Thanks, Oct 5, 2015 · I have created a gre tunnel. fortios 2. 100. Set the metric lower on the primary route. 0/administration-guide/261291/gre-tunnel. user1015598. Minimum value: 0 Maximum value Jan 12, 2005 · We setup an own Interface for the Cisco on the new Fortinet-Side) grant access from all to all (only for test) and grant access from the cisco-port to all for all ports. 152. 4. You may configure GRE tunnels, though Fortinet recommends configuring IPsec tunnels. Verifying the traffic. as long as the you assign the valid tunnel source, gre tunnel comes up. x/8 interfaces. Parameters. March 14, 2020. - Configure GRE-Interface. Remote Device Ip address/ DDNS - The IP address has been used. On the FortiGate, go to Log & Report > Forward Traffic and view the details for the SSL entry. Hover over the leftmost edge of the column heading to display the Configure Table icon, which you can use to select the columns to display or to reset all the Jun 11, 2014 · The purpose of the attached document is to explain how to avoid IP Fragmentation with the FortiGate TCP Maximum Segment Size feature when deploying FortiGate firewalls in GRE Tunnel mode. This is probably the reason for which it doesn't have as many customization possibilities as IPsec interface. May 30, 2011 · Return code -23 by the way, i try to change the gre tunnel remote-gw, but the firewall can' t do it: FG300B (gre-tunnel) # edit gre FG300B (gre) # set remote-gw 1. Solution . This article describes how to configure and troubleshoot a GRE over IPsec tunnel using “encapsulation gre” between a FortiGate and a Cisco router. Requirements. Fortinet Documentation Library Fortinet Documentation Library Jun 3, 2015 · Previously, I was using Cisco both sides HO and Site A and connectivity established with gre tunnel . Synopsis . Since the IP address terminating the GRE tunnel on your firewall is a public IP address, there is Dec 3, 2020 · Why do you need multiple tunnels for a GRE connection between the same two device ? You might can get away with nailing the tunnel to a loopback interface e. Share. To configure GRE tunneling, create the GRE tunnel profile as well as an ESSID that specifies the GRE tunnel and also references a Security Profile. I would like to know if it is possible, because Wireless controller send data to Access Point FortiGate v7. Solution. html Aug 14, 2018 · I have set up a GRE tunnel, firewall rules and a Policy Route, but traffic is not going through the GRE (although its trying looking at FortiView). 0/24) are communicating with each other using GRE tunnel over internet. 0/24 is the Cisco LAN interface. 0. 20. set name {string} Tunnel name. Policy-based IPsec tunnel. The New VPN Tunnel settings are displayed. Oct 12, 2022 · Below the output, followed by the settings in the Fortigate side: FGT80F-PL-Alem # diagnose debug enable FGT80F-PL-Alem # 2022-10-12 11:42:24. Enter the required information, then select 'Create'. Siddhanth Poojary. - Configure policies bi-directional. Enter a Name for the tunnel and select the Template type to be Custom. You need to delete from system->gre-tunnel. string: Maximum length: 15: ip-version: IP version to use for VPN interface. Mar 25, 2022 · This article illustrates the configuration of a GRE over IPsec tunnel between FortiGate unit with IPsec tunnel to be terminated on a Loopback interface. y. 5 set remote-gw xxx. 2 255. We can see the traffic (GRE) is getting in, the cisco get the GRE-Packets, but if the cisco sends GRE-Packets they dont get through the firewall. But set it 10 and also set the priority number higher (priority is lower) like 10. Nov 23, 2014 · Hi, you can view the gre tunnel status using the following commands . IKEv2 IPsec site-to-site VPN to an AWS VPN gateway. Return Values. 5. I can' t find one on the FortiNet site. 1 > 7. 255. Nov 24, 2023 · I have site to site connection over the GRE tunnel it was working fine but now the GRE point to point IP is only ping . Contents. OID '1. 2. Below are all the SNMP OIDs related to IPsec VPN: tunnelsfgVpnTunEntSelect Fortinet Documentation Library GRE over IPsec Policy-based IPsec tunnel SSL VPN tunnel mode host check FortiGate multiple connector support Adding VDOMs with FortiGate v-series Terraform GRE tunnel performance SLA. Reply. Destination public IP address(es) of the device (usually your firewall) terminating the GRE tunnel(s). After that the gre interface will be deleted. Both Tunnel interfaces are part of the 172. You must use the CLI to configure a GRE tunnel. . 3. 10. The ISP1 link is for the primary FortiGate and the IPS2 link . Go to VPN > Monitor > SSL-VPN Monitor to verify the list of SSL users. X. 252 tunnel destination 192. 120 . x or v7. To deploy this configuration on the FortiGate unit, it is mandatory to configure different IP addressing space for the GRE tunnel and the IPsec tunnel. Each FortiGate has two WAN interfaces connected to different ISPs. 119 . Minimum value: 0 Maximum value: 32767. set remote-gw 203. OSPF will be enabled on all 10. 80. Name of the source interface. I make sure the routing is okay Sep 28, 2023 · Change the ad distance of the secondary one to a higher number. Mar 10, 2017 · GRE over IPsec configuration with FortiOSTight integration between GRE and IPsec (“encapsulation gre”) is available as of FortiOS 5. there is no gre keepalive packets fgt send like cisco routers. Name - Respected Tunnel Name (VPN_1). To ensure that the primary tunnel (GRE Tunnel 1) is used as the active path and the second tunnel (GRE Tunnel 2) is used as a backup, you can manipulate the route metric. I am not able to achieve LAN2-Cisco and also from cisco router LAN - Fortigate. - Enter the required details and save the configuration. and I found this result from my t-shooting. 0. GRE over IPv4 has an overhead of IPv4 (20 bytes) and GRE (4 bytes). 192. Support for GRE tunneling and GRE over IPsec in tunnel-mode is available as of FortiOS 3. Does Fortigate 60 support GRE Tunnels? Or do i need to configure the GRE tunnel in the Jun 22, 2009 · The below example explain about how to create simple GRE tunnels between endpoints and the necessary steps to create and verify the GRE tunnel between the two networks. To deploy this configuration on the FortiGate unit, it is mandatory to configure different IP addressing space for the GRE tunnel and the IPsec tunnel. The is INTEGER: 1 means tunnel down and INTEGER: 2 means tunnel up. Mar 22, 2024 · The tunnel will continue to pass traffic for about 5 minutes then fail. Support for IPsec transport-mode, traffic selector restriction and dynamic routing with IPsec Fortinet Documentation Library Jul 12, 2019 · The GRE tunnel runs between the virtual IPsec public interface on the FortiGate unit and the Cisco router. Also, the crypto algorithms will influence the ESP header/trailer size, thereby The Generic Routing Encapsulation (GRE) tunnel allows direct communication between two nodes on a network. - Click New GRE Configuration. 2 Jan 8, 2016 · GRE over IPv4 has an overhead of IPv4 (20 bytes) and GRE (4 bytes). Console commands: Configuring IPsec. diag netlink interface list name <gre-tunnel-name> get sys interface . Click Save. keepalive-interval. config system gre-tunnel. Also I have seen that the route for data that should travel through the GRE tunnel is not installed Nov 23, 2023 · I have site to site connection over the GRE tunnel it was working fine but now the GRE point to point IP is only ping . Mar 10, 2017 · This article describes how to configure and troubleshoot a GRE over an IPsec tunnel between a FortiGate and a Cisco router. Native VXLAN tunnel cannot be configured in FortiOS 5. Feb 10, 2024 · GRE Tunnel not working after 7. cs ty jx mh sg cr pk py gb ez