FEC is a technique used to control and correct errors in data transmission by sending redundant data across the VPN. In this example, a FortiSwitch 3032E that is managed by the FortiGate device is configured with Clause 74 FC-FEC on port 16.1 and Clause 91 RS-FEC on port 8. Edited By ECE2305: Forward Error Correction Basics Error Detection vs. Technical Tip: Forward Error Correction (FEC). If more than one tunnel is available, duplicated packets will be sent over the tunnel with the best parameters. If fec-codec is set to xor the base and redundant packet values will not be updated. Refer Table: Enabling FEC (FSKC4.SFD32 = 0) and Table: Enabling FEC (FSKC4.SFD32 = 1) in AT86RF215 datasheet for more information on the register configurations to enable or disable FEC. FEC is enabled on vd1-p1, and health-check works on vd1-p1. 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. FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic. It is possible to see the FEC type in the output of '# diagnose hardware deviceinfo nic ' in the Link Settings section: FG22E1-2 # diag hardware deviceinfo nic port25======== Link Settings ==========link_autonego :0link_setting :1link_speed :25000link_duplex :1link_fec :RS (0x3) ---> current value, Reed-Solomonlink_fec_cap :Off,RS,BaseR (0x1c) --->possible values: off, Reed-Solomon and Fire-Codelink_serdes_if :SRserdes_if_cap :GMII,SGMII,SR,LR,CR (0x3e)serdes_dflt :3pm_mode_setting :2pm_mode :0x6pm_mode_dflt :2pm_port :Yesmedium_mode :0========== Link Status ==========. Network Security. B. 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. Technical Tip: changes in Forward Error Correct (FEC) settings Description This article describes how to cover the changes in FEC settings for some FortiGates. Following are some NSE7_SDW-6.4 Exam Questions for Review. 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. Adaptive FEC starts to work at 2% packet loss; this value is hard-coded and is not configurable. FG22E1-2 (port25) # set forward-error-correction ?enable <----- Enable forward error correction (FEC).disable <----- Disable forward error correction (FEC). 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. FortiGate Cloud; Enterprise Networking. Forward error correction only available for 100 GigE interfaces On FortiGate models with NP7 processors, the forward-error-correction CLI option is only available for interfaces with speed set to 100Gfull. (Choose two.) 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. Using these two connections, create two IPsec VPN interfaces as SD-WAN members. In this example, an IPsec tunnel is configured between two FortiGates that both have FEC enabled. This option is only available for 100Gbps ports. Created on FEC is enabled on vd1-p1, and health-check works on vd1-p1. Solution. FEC is enabled on vd1-p1, and health-check works on vd1-p1. FEC is disabled by default. In this example, an IPsec tunnel is configured between two FortiGates that both have FEC enabled. Forgot Email? 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. As long as the receiver receives a subset of packets in the group (at-least N-1) and the parity packet, up to a single lost packet in the group can be recovered. Fortinet Community Knowledge Base FortiGate The number of redundant Forward Error Correction packets (1 - 100, default = 10). 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. For Example, policies that allow the UDP based VoIP protocol can enable FEC, while TCP based traffic policies do not. Copyright 2023 Fortinet, Inc. All Rights Reserved. FortiAnalyzer FortiGate 74 0 Share Reply All forum topics Previous Topic Next Topic For example, when there is no or low packet loss in the network, FEC can work on a low redundant level sending only one redundant packet for every 10 base packets. If your FortiGate is NPU capable, disable npu-offload in your phase1 configurations: For example, a customer has two ISP connections, wan1 and wan2. An FEC profile is configured to adaptively increase redundant levels if the link quality exceeds a 10% packet loss threshold, or the bandwidth exceeds 950 Mbps. FEC is disabled by default. FortiGate Cloud / FDN communication through an explicit proxy FDS-only ISDB package in firmware images Licensing in air-gap environments FortiOS 7.0.4 and up, FortiOS 7.2.0 and up. 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. Show Forward Error Correction (FEC) in FAZ reporting Hi All, We are using FEC on some FortiGates. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. The mechanism sends out x number of redundant packets for every y number of base packets. The tunnel is an SD-WAN zone, and an SLA health-check is used to monitor the quality of the VPN overlay. 11-30-2022 Email. Forward Error Correction (FEC) is used to lower the packet loss ratio by consuming more bandwidth. 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For example how many redundant packets are being sent. The time before sending Forward Error Correction packets, in milliseconds (1 - 1000, default = 8). As packet loss increases, the number of redundant packets sent can rise accordingly. 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 category, Enhanced hashing for LAG member selection, PRP handling in NAT mode with virtual wire pair, Virtual switch support for FortiGate 300E series, Failure detection for aggregate and redundant interfaces, 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