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--- sonicwall:basic_configurations_support_site_and_vpn_scenarios [2025/02/24 08:33] – aperez
+++ sonicwall:basic_configurations_support_site_and_vpn_scenarios [2025/02/24 09:36] (current) – aperez
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       exit
+----
+----
+{{ :sonicwall:services_group_objects.zip |}}
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+**FEC** on an SFP port refers to **Forward Error Correction (FEC)**, which is a technique used in fiber optic and Ethernet networks to enhance data transmission reliability by detecting and correcting errors without the need for retransmission.
+**FEC (Forward Error Correction)**:
+FEC is a mechanism that adds redundant information to the transmitted data. This redundancy allows the receiving end to detect and correct errors caused by signal degradation or noise during transmission.
+Purpose: FEC is essential for high-speed data links (e.g., 10G, 25G, 40G, 100G Ethernet) to improve link quality and performance.
+Types: Different FEC modes can be used depending on the standard and speed of the connection (e.g., Reed-Solomon FEC).
+  *   **auto**   Enable FEC Auto-Neg
+  *   **cl108**  Enable clause108 with 25G
+  *   **cl74**   Enable clause74 with 25G
+  *   **off**    Turn FEC off, FEC is mandatory for speeds 50G or higher
+----
+----
+**Benefits of FEC on SFP Ports**:
+  * Error Correction: FEC can correct errors due to signal attenuation or interference.
+  * Better Link Performance: Allows for longer cable runs or higher speeds by improving signal integrity.
+  * No Retransmissions: Unlike other error correction methods, FEC works proactively without needing retransmissions, which is important for low-latency environments.
+----
+**Aruba Switch 6400:**
+  CS-2P-MDFHA-A#** show ver**
+  -----------------------------------------------------------------------------
+  ArubaOS-CX
+  (c) Copyright 2017-2024 Hewlett Packard Enterprise Development LP
+  -----------------------------------------------------------------------------
+  Version      : FL.10.13.1010
+  Build Date   : 2024-04-09 00:34:12 UTC
+  Build ID     : ArubaOS-CX:FL.10.13.1010:ef2109377880:202404090010
+  Build SHA    : ef21093778805e954ec130b0939d34927bb7ba19
+  Hot Patches  :
+  Active Image : primary
+  Service OS Version : FL.01.14.0002
+  BIOS Version       : FL.01.0002
+CS-2P-MDFHA-A(config)# **interface 1/3/36**
+**error-control**    Configure the error control (**FEC**) mode
+  CS-2P-MDFHA-A(config-if)# error-control
+    auto        Use the transceiver default
+    base-r-fec  Use IEEE BASE-R (Firecode) FEC
+    none        Do not use any FEC
+    rs-fec      Use IEEE Reed-Solomon FEC
+----
+**C9500 Cisco Catalyst**
+C9500-N#**show ver**
+  Cisco IOS XE Software, **Version 17.12.03**
+  Cisco IOS Software [Dublin], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 17.12.3, RELEASE SOFTWARE (fc7)
+  interface TwentyFiveGigE1/0/3
+   description VLAN 526 PTP A.B.C.D/EF X30
+   switchport access vlan 526
+   switchport mode access
+   mtu 9100
+   logging event trunk-status
+   logging event bundle-status
+   udld port aggressive
+   fec cl74
+  C9500-N(config-if)#interface TwentyFiveGigE1/0/3
+  C9500-N(config-if)#fec ?
+    auto   Enable FEC Auto-Neg
+    cl108  Enable clause108 with 25G
+    cl74   Enable clause74 with 25G
+    off    Turn FEC off, FEC is mandatory for speeds 50G or higher
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