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   What is forward error correction (FEC)?

   • 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. 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.

   Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco

   www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/forward-error-correction.html

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   What is forward error correction (FEC) on VPN overlay networks?

   • This topic shows an SD-WAN with forward error correction (FEC) on VPN overlay networks. FEC is a technique used to control and correct errors in data transmission by sending redundant data across the VPN. It uses six parameters in IPsec phase1/phase1-interface settings:

   Forward error correction on VPN overlay networks | FortiGate / FortiOS

   docs.fortinet.com/document/fortigate/6.4.0/administration-guide/697460/forward-error-correction-on-vpn-overlay-networks

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   How many packets can a FEC receiver recover?

   • 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. FEC is supported on Cisco IOS XE Catalyst SD-WAN devices.

   Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco

   www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/forward-error-correction.html

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   What is FEC adaptive & FEC always?

   • FEC Adaptive: Only send FEC information when the loss detected by the system exceeds the packet loss threshold. FEC Always: Always send FEC information with every transmission. Packet Duplication check box: Duplicates packets through secondary links to reduce packet loss if one link goes down.

   Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco

   www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/forward-error-correction.html

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2. community.fs.com › encyclopedia › a-fecWhat Is A-FEC? Why Is A-FEC Required? | FS Community

   community.fs.com › encyclopedia › a-fec

   • Cached

   1 day ago · To address this challenge, A-FEC employs FEC encoding at the transmit end to create redundant packets, alongside the original data, providing backup data. Consequently, even if packet loss occurs during transmission, the receiving end can conduct FEC decoding using the redundant packets, thereby recovering lost packets and implementing forward ...

3. www.cisco.com › forward-error-correctionCisco Catalyst SD-WAN Policies Configuration Guide, Cisco IOS ...

   www.cisco.com › forward-error-correction

   • Cached

   Apr 30, 2024 · Procedure. Monitor Forward Error Correction Status Using the CLI. Use the show sdwan tunnel statistics fec command to verify the FEC status on a Cisco IOS XE Catalyst SD-WAN device : Device# show sdwan tunnel statistics fec . tunnel stats ipsec 80.80.10.19 80.80.10.25 12346 12366. fec-rx-data-pkts 0. fec-rx-parity-pkts 0.

4. docs.paloaltonetworks.com › prisma › prisma-sd-wanPrisma SD-WAN Performance Policy - Palo Alto Networks

   docs.paloaltonetworks.com › prisma › prisma-sd-wan

   • Cached

   Apr 29, 2024 · Forward Error Correction (FEC) to ensure the SLA is met. Optionally, an incident can be generated for critical applications when an SLA is violated.

5. Videos

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     youtube.com

     Tutorial – Why Use Forward Error Correction (FEC)

     Oct 15, 2019

     11.2K Views

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     8:51

     youtube.com

     Forward Error Correction | Computer Networks | Part 2 | FEC error detection in computer networking

     Apr 6, 2020

     17.9K Views

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     13:28

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     Error Detection and Correction 3: Forward Error Correction

     Jun 7, 2016

     96.2K Views

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6. origin-docs.paloaltonetworks.com › prisma › prismaBest Practices and Recommendations

   origin-docs.paloaltonetworks.com › prisma › prisma

   • Cached

   Apr 27, 2024 · Functional Limits for Forward Error Correction (FEC) and Packet Duplication. : FEC and Packet Duplication are adaptive and will only invoke when a Prisma SD-WAN VPN path exceeds the packet loss threshold specified in the SLA.

7. resources.goanritsu.com › digital-and-opticalStress Testing PCIe 6.0 FLIT-based Forward Error Correction

   resources.goanritsu.com › digital-and-optical

   • Cached

   Apr 19, 2024 · PCIe 6.0 introduces Flow Control Unit (FLIT) encoding to allow forward error correction (FEC) on fixed-size packets. Stress testing PCIe hardware includes addressing this new protocol approach. Once FLIT mode is turned on, it will work with any data rate.

8. docs.paloaltonetworks.com › prisma › prisma-sd-wanUse Case 2 - Protect a Business Critical Enterprise Application

   docs.paloaltonetworks.com › prisma › prisma-sd-wan

   • Cached

   Apr 27, 2024 · Use the Active Path as long as it's available. Use Link Quality Monitoring (LQM) information available from the Branch to Data Center VPNs, to adaptively control Forward Error Correction (FEC) for any observed packet loss. Use only the Layer 3 Failure Path if the active path is down, not degraded.

9. origin-docs.paloaltonetworks.com › prisma › prismaPerformance Policy Use Cases

   origin-docs.paloaltonetworks.com › prisma › prisma

   • Cached

   Apr 27, 2024 · Introduction to Performance Policy use cases to review sample policy rules for several common use cases along with general guidelines for implementation.