For example how many redundant packets are being sent. 12:26 AM Forward error correction In telecommunications Forward error correction (FEC) is a special code for error detection and correction. 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. Binary Convolution Code Here, an encoder processes an input sequence of bits of arbitrary length and generates a sequence of output bits. The mechanism sends out x number of redundant packets for every y number of base packets. This blog post explains how FEC works and describes how leading SD-WAN platforms utilize it to mitigate packet loss. The mechanism sends out x number of redundant packets for every y number of base packets. It's not just a simple duplication of the data. Does any one know how to build a FortiAnalyzer query for this? For Example, policies that allow the UDP based VoIP protocol can enable FEC, while TCP based traffic policies do not. 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 ==========. I would like to see that is actually is working. If more than one tunnel is available, duplicated packets will be sent over the tunnel with the best parameters. Created on Technical Tip: Forward Error Correction for IPsec Technical Tip: Forward Error Correction for IPsec VPN. 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. Refer to the exhibit. FEC is far more complex then that. Forward error correction (FEC) is a digital signal processing technique used to enhance data reliability. The URL category must be specified on the traffic shaping policy. If your FortiGate is NPU capable, disable npu-offload in your phase1 configurations: For example, a customer has two ISP connections, wan1 and wan2. REGISTER. This technique is known as the Forward Error Correction technique. SD-WAN and Forward Error Correction: Mitigating Packet Loss SD-WAN improves the performance and reliability of IP networks, and one of the techniques it employs is Forward Error Correction (FEC). (Choose two.) Copyright 2023 Fortinet, Inc. All Rights Reserved. It uses six parameters in IPsec phase1/phase1-interface settings: For every fec-base number of sent packets, the tunnel will send fec-redundant number of redundant packets. It does this by introducing redundant data, called error correcting code, prior to data transmission or storage. In this example, an IPsec tunnel is configured between two FortiGates that both have FEC enabled. Show Forward Error Correction (FEC) in FAZ reporting Hi All, We are using FEC on some FortiGates. Yes, it's additional redundant data, but it's gone through a complex mathematical transformation that means that you can lose any portion of a data block and still recover the original. 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. If fec-codec is set to xor the base and redundant packet values will not be updated. The mechanism sends out x number of redundant packets for every y number of base packets. FEC is enabled on vd1-p1, and health-check works on vd1-p1. Enable/disable Forward Error Correction for egress IPsec traffic (default = disable). As packet loss increases, the number of redundant packets sent can rise accordingly. A. The time before dropping Forward Error Correction packets, in milliseconds (1 - 1000, default = 5000). Forgot Email? FEC can be applied only to streams that are sensitive to packet loss. I was only able to enable FEC by disabling ASIC offload for the IPsec tunnel. Using these two connections, create two IPsec VPN interfaces as SD-WAN members. The tunnel is an SD-WAN zone, and an SLA health-check is used to monitor the quality of the VPN overlay. (Choose two ) A The debug output shows per-IP shaper values and real-time readings. For example how many redundant packets are being sent. Forward-looking statements in this report, including without limitation, statements related to the Company's plans, strategies, objectives, expectations, intentions and adequacy of resources, are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. FEC Always - Corresponding packets are always subjected to FEC. c191: Enable Clause 91 RS-FEC. The receiver is then able to detect certain errors that came from the sending the data. Which two statements about the debug output are correct? 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. 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). FortiOS 7.0.4 and up, FortiOS 7.2.0 and up. 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 fec-codec is set to xor the base and redundant packet values will not be updated. Question 1. This reduces unnecessary bandwidth consumption by FEC. FEC is a technique used to control and correct errors in data transmission by sending redundant data across the VPN. The number of redundant Forward Error Correction packets (1 - 100, default = 10). Home FortiGate / FortiOS 7.0.0 New Features 7.0.0 Download PDF Forward error correction settings on switch ports Supported managed-switch ports can be configured with a forward error correction (FEC) state of Clause 74 FC-FEC for 25-Gbps ports and Clause 91 RS-FEC for 100-Gbps ports. 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. FortiAnalyzer Fortigate 35 0 Share Reply All forum topics Previous Topic Next Topic B This traffic shaper drops traffic that exceeds the set limits. FEC can be applied only to streams that are sensitive to packet loss. FEC is disabled by default. FEC is disabled by default. Answer. 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. Adaptive FEC starts to work at 2% packet loss; this value is hard-coded and is not configurable. Does any one know how to build a FortiAnalyzer query for this? 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 with WiFi, Configure FortiGate with FortiExplorer using BLE, 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, Failure detection for aggregate and redundant interfaces, PRP handling in NAT mode with virtual wire pair, 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