On FortiGate A, apply the FEC mappings on vd1-p1: The FEC base and redundant values are used when the link quality has not exceeded the limits specified in the FEC profile mapping. FEC can be applied only to streams that are sensitive to packet loss. The DMZ interface and IPsec tunnel vd1-p1 are SD-WAN members. In this example, an IPsec tunnel is configured between two FortiGates that both have FEC enabled. 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. Answer. Binary Convolution Code Here, an encoder processes an input sequence of bits of arbitrary length and generates a sequence of output bits. FG22E1-2 (port25) # set forward-error-correction ?disable <----- Disable forward error correction (FEC).cl91-rs-fec <----- Reed-Solomon (FEC CL91).cl74-fc-fec <----- Fire-Code (FEC CL74). The mechanism sends out x number of redundant packets for every y number of base packets. A. FEC is useful to increase speed at which traffic is routed through IPsec tunnels. On FortiGate A, apply the FEC mappings on vd1-p1: The FEC base and redundant values are used when the link quality has not exceeded the limits specified in the FEC profile mapping. On FortiGate A, check the health-check result and the corresponding FEC base and redundant packets: Because bandwidth-up is more than 950000kbps, base and redundant are set to 9 and 3: Make packet loss more than 10%, then check the health-check result and the corresponding FEC base and redundant packets again: Because packet loss is more than 10%, entry one in FEC mapping is first matched, and base and redundant are set to 8 and 2: Usability enhancements to SD-WAN Network Monitor service, Hold down time to support SD-WAN service strategies, SD-WAN passive health check configurable on GUI 7.0.1, Speed tests run from the hub to the spokes in dial-up IPsec tunnels 7.0.1, Interface based QoS on individual child tunnels based on speed test results 7.0.1, Passive health-check measurement by internet service and application 7.0.2, SD-WAN transit routing with Google Network Connectivity Center 7.0.1, Display ADVPN shortcut information in the GUI 7.0.1, SD-WAN monitoring shows the SD-WAN rule and its status, active selected member for a given SLA FMG 7.0.2, QoS monitoring support added for dialup VPN interfaces FMG 7.0.2, SD-WAN application bandwidth per interface widget FAZ 7.0.2, SD-WAN real-time monitoring (30 seconds) supported per-device FMG 7.0.3, SD-WAN application performance monitoring FAZ 7.0.3, IPsec template enhanced support for tunnel interface configuration FMG 7.0.1, Templates support assignment to device groups FMG 7.0.1, BGP template to manage all BGProuting configurations FMG 7.0.2, Import IPSec VPN configuration from a managed FortiGate into a IPSec template FMG 7.0.2, Import BGP routing configuration from a managed FortiGate into a template FMG 7.0.3, BGP and IPsec recommended templates for SD-WAN overlays FMG 7.0.3, Additional charts for SD-WAN reporting FAZ 7.0.1, ECMP routes for recursive BGP next hop resolution, BGP next hop recursive resolution using other BGP routes, ECMP support for the longest match in SD-WAN rule matching 7.0.1, Override quality comparisons in SD-WAN longest match rule matching 7.0.1, Specify an SD-WAN zone in static routes and SD-WAN rules 7.0.1, Packet duplication for dial-up IPsec tunnels. It is important to keep FEC settings the same on both FortiGate and switch sides, otherwise, ports will not get up due to mismatch. Copyright 2023 Fortinet, Inc. All Rights Reserved. Email. This topic shows an SD-WAN with forward error correction (FEC) on VPN overlay networks. 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.. Send TCP and UDP traffic from PC1 to PC2, then check the sessions on FortiGate A: Non-FEC protected TCP traffic is offloaded, while FEC protected UDP traffic is not offloaded. FEC can be applied only to streams that are sensitive to packet loss. Configure FEC on each VPN interface to lower packet loss ratio by re-transmitting the packets using its backend algorithm. The number of base Forward Error Correction packets (1 - 100, default = 20). On FortiGate A, create a policy to specify performing FEC on UDP traffic, and a policy for other traffic: On FortiGate A, configure FEC mapping to bind network SLA metrics and FEC base and redundant packets: The mappings are matched from top to bottom: packet loss greater than 10% with eight base and two redundant packets, and then uploading bandwidth greater than 950 Mbps with nine base and three redundant packets. Forward Error Correction (FEC) is used to control and correct errors in data transmission by sending redundant data across the VPN in anticipation of dropped packets occurring during transit. The intention is to apply FEC to UDP traffic that is passing through the VPN overlay, while allowing all other traffic to pass through without FEC. Copyright 2023 Fortinet, Inc. All Rights Reserved. FEC is far more complex then that. The number of redundant Forward Error Correction packets (1 - 100, default = 10). 1100E, 2200E, 3300E, 3400E, 3960E, 3980E models. Packet Duplication - Sends duplicate packets over a single tunnel. ECE2305: Forward Error Correction Basics Error Detection vs. FortiGate Cloud / FDN communication through an explicit proxy FDS-only ISDB package in firmware images Licensing in air-gap environments Following are some NSE7_SDW-6.4 Exam Questions for Review. The tunnel is an SD-WAN zone, and an SLA health-check is used to monitor the quality of the VPN overlay. 'Enable' was forked into two options - Reed-Solomon (FEC CL91) and Fire-Code (FEC CL74). Forward Error Correction (FEC) is a mechanism to recover lost packets on a link by sending extra "parity" packets for every group of 4 packets. I would like to see that is actually is working. Which two reasons make forward error correction (FEC) ideal to enable in a phase one VPN interface? In this example, an IPsec tunnel is configured between two FortiGates that both have FEC enabled. I was only able to enable FEC by disabling ASIC offload for the IPsec tunnel. FEC is disabled by default. The tunnel is an SD-WAN zone, and an SLA health-check is used to monitor the quality of the VPN overlay. 02/15/2022- by Mod_GuideK2 For example how many redundant packets are being sent. The sender adds parts of the data again. On the Fortimanager CLI configuration of this device, the feature is disabled, and this change is not showing on the change revision during the installation. Forward error correction In telecommunications Forward error correction (FEC) is a special code for error detection and correction. The number of base Forward Error Correction packets (1 - 100, default = 20). Copyright 2023 Fortinet, Inc. All Rights Reserved. FG22E1-2 (port25) # set forward-error-correction ?enable <----- Enable forward error correction (FEC).disable <----- Disable forward error correction (FEC). Adaptive FEC considers link conditions and dynamically adjusts the FEC packet ratio: The FEC base and redundant packet relationship is dynamically adjusted based on changes to the network SLA metrics defined in the SD-WAN SLA health checks. Forward error connection is not supported for interfaces in FortiGates with NP7 processors operating at any other speeds. Because FEC does not support NPU offloading, the ability to specify streams and policies that do not require FEC allows those traffic to be offloaded. For every fec-base number of sent packets, the tunnel will send fec-redundant number of redundant packets. 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The mechanism sends out x number of redundant packets for every y number of base packets. Solution Six new parameters are added to the IPsec phase1-interface settings: fec-ingress: Enable/disable Forward Error Correction for ingress IPsec traffic (default = disable). Fortinet Community Knowledge Base FortiGate By default, this setting has the 'cl91-rs-fec' function enabled. Forward Error Correction (FEC) is a mechanism to recover lost packets on a link by sending extra "parity" packets for every group (N) of packets. As packet loss increases, the number of redundant packets sent can rise accordingly. FortiOS 7.0.4 and up, FortiOS 7.2.0 and up. Edited on 12:26 AM Fortinet Public company Business Business, Economics, and Finance. On both FortiGates, enable FEC and NPU offloading on the IPsec tunnel vd1-p1: The VPN overlay member (vd1-p1) must be included in the health-check and configured as the higher priority member in the SD-WAN rule. Technical Tip: changes in Forward Error Correct (FEC) settings Description This article describes how to cover the changes in FEC settings for some FortiGates. If fec-codec is set to xor the base and redundant packet values will not be updated. Configuring the VPN overlay between the HQ FortiGate and cloud FortiGate-VM Configuring the VPN overlay between the HQ FortiGate and AWS native VPN gateway Configuring the VIP to access the remote servers On FortiGate A, check the health-check result and the corresponding FEC base and redundant packets: Because bandwidth-up is more than 950000kbps, base and redundant are set to 9 and 3: Make packet loss more than 10%, then check the health-check result and the corresponding FEC base and redundant packets again: Because packet loss is more than 10%, entry one in FEC mapping is first matched, and base and redundant are set to 8 and 2: Connecting FortiExplorer to a FortiGate via WiFi, Transfer a device to another FortiCloud account, Viewing device dashboards in the Security Fabric, Creating a fabric system and license dashboard, Viewing session information for a compromised host, FortiView Top Source and Top Destination Firewall Objects monitors, Viewing top websites and sources by 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process for FortiGuard updates.