Fortinet white logo
Fortinet docs logo DOCUMENT LIBRARY
Fortinet white logo
Fortinet docs logo DOCUMENT LIBRARY
Products Best Practices Hardware Guides Products A-Z
Summary
By Solution
By 4D Pillars
By Cloud
Secure Networking
Unified SASE
Security Operations
Secure SD-WAN
Secure Access Service Edge (SASE)
ZTNA
LAN Edge
Identity and Access Management
Next Generation Firewall
Public Cloud
Private Cloud
FortiCloud
Secure Networking
  • Hybrid Mesh Firewall
  • NOC Management
  • LAN
  • WAN
    • More >>
    Unified SASE
  • Single Vendor SASE
  • Cloud Network Security
  • Secure Endpoint Connectivity
  • Web Application / API Protection
    • More >>
    Security Operations
  • Security Operations Automation
  • Identity
  • Early Detection & Prevention
    • More >>
    Secure Networking
  • Hybrid Mesh Firewall
  • NOC Management
  • LAN
  • WAN
  • Communication & Surveillance
    • Unified SASE
  • Single Vendor SASE
  • Secure Endpoint Connectivity
  • Cloud Network Security
  • Cloud-Native Security
  • Web Application / API Protection
    • Security Operations
  • Security Operations Automation
  • Endpoint
  • Data Protection
  • Identity
  • Email
  • Early Detection & Prevention
  • Expert Services
  • Edge Firewall
  • Orchestration & management
  • SD Branch
  • Application Delivery
  • Single Vendor SASE
  • Secure Endpoint Connectivity
  • Secure Private Access
  • Thin Edge
  • Identity
  • Application Gateway
  • Enterprise Asset Management
  • Endpoint Agent
  • Agentless Security Posture
  • Identity
  • Wireless
  • Switching
  • Identity
  • Privilege Acccess Management
  • Next Generation Firewall
  • Orchestration & management
  • Expert Services
  • All
  • All
  • Account Management
  • SAAS Management
  • SAAS Application Security
  • Managed Services
  • Platform as a service (PAAS)
  • Other SAAS Services
    • 4D Resources
    Solution Hubs
  • 4D Pillars
  • Cloud
  • Popular Solutions

    • FortiOS Release Notes

    Home FortiGate / FortiOS 6.2.4 FortiOS Release Notes
    6.2.4
    7.6.0
    7.4.5
    7.4.4
    7.4.3
    7.4.2
    7.4.1
    7.4.0
    7.2.10
    7.2.9
    7.2.8
    7.2.7
    7.2.6
    7.2.5
    7.2.4
    7.2.3
    7.2.2
    7.2.1
    7.2.0
    7.0.16
    7.0.15
    7.0.14
    7.0.13
    7.0.12
    7.0.11
    7.0.10
    7.0.9
    7.0.8
    7.0.7
    7.0.6
    7.0.5
    7.0.4
    7.0.3
    7.0.2
    7.0.1
    7.0.0
    6.4.15
    6.4.14
    6.4.13
    6.4.12
    6.4.11
    6.4.10
    6.4.9
    6.4.8
    6.4.7
    6.4.6
    6.4.5
    6.4.4
    6.4.3
    6.4.2
    6.4.1
    6.4.0
    6.2.16
    6.2.15
    6.2.14
    6.2.13
    6.2.12
    6.2.11
    6.2.10
    6.2.9
    6.2.8
    6.2.7
    6.2.6
    6.2.5
    6.2.4
    6.2.3
    6.2.2
    6.2.1
    6.2.0
    6.0.18
    6.0.17
    6.0.16
    6.0.15
    6.0.14
    6.0.13
    6.0.12
    6.0.11
    6.0.10
    6.0.9
    6.0.8
    6.0.7
    6.0.6
    6.0.5
    6.0.4
    6.0.3
    6.0.2
    6.0.1
    6.0.0
    5.6.14
    5.6.13
    5.6.12
    5.6.11
    5.6.10
    5.6.9
    5.6.8
    5.6.7
    5.6.6
    5.6.5
    5.6.4
    5.6.3
    5.6.2
    5.6.1
    5.6.0
    5.4.13
    5.4.12
    5.4.11
    5.4.10
    5.4.9
    5.4.8
    5.4.7
    5.4.6
    5.4.5
    5.4.4
    5.4.3
    5.4.2
    5.4.1
    5.4.0
    5.2.15
    5.2.14
    5.2.13
    5.2.12
    5.2.11
    5.2.10
    5.2.9
    5.2.8
    5.2.7
    5.2.6
    5.2.5
    5.2.4
    5.2.3
    5.2.2
    5.2.1
    5.2.0
    5.0.14
    5.0.13
    5.0.12
    5.0.11
    5.0.10
    5.0.9
    5.0.8
    5.0.7
    5.0.6
    5.0.5
    5.0.4
    5.0.3
    5.0.2

    Amazon AWS enhanced networking compatibility issue

    Amazon AWS enhanced networking compatibility issue

    With this enhancement, there is a compatibility issue with 5.6.2 and older AWS VM versions. After downgrading a 6.2.4 image to a 5.6.2 or older version, network connectivity is lost. Since AWS does not provide console access, you cannot recover the downgraded image.

    When downgrading from 6.2.4 to 5.6.2 or older versions, running the enhanced NIC driver is not allowed. The following AWS instances are affected:

    C5

    C5d

    C5n

    F1

    G3

    G4

    H1

    I3

    I3en

    Inf1

    m4.16xlarge

    M5

    M5a

    M5ad

    M5d

    M5dn

    M5n

    P2

    P3

    R4

    R5

    R5a

    R5ad

    R5d

    R5dn

    R5n

    T3

    T3a

    u-6tb1.metal

    u-9tb1.metal

    u-12tb1.metal

    u-18tb1.metal

    u-24tb1.metal

    X1

    X1e

    z1d

    A workaround is to stop the instance, change the type to a non-ENA driver NIC type, and continue with downgrading.

    Previous
    Next

    Amazon AWS enhanced networking compatibility issue

    Amazon AWS enhanced networking compatibility issue

    With this enhancement, there is a compatibility issue with 5.6.2 and older AWS VM versions. After downgrading a 6.2.4 image to a 5.6.2 or older version, network connectivity is lost. Since AWS does not provide console access, you cannot recover the downgraded image.

    When downgrading from 6.2.4 to 5.6.2 or older versions, running the enhanced NIC driver is not allowed. The following AWS instances are affected:

    C5

    C5d

    C5n

    F1

    G3

    G4

    H1

    I3

    I3en

    Inf1

    m4.16xlarge

    M5

    M5a

    M5ad

    M5d

    M5dn

    M5n

    P2

    P3

    R4

    R5

    R5a

    R5ad

    R5d

    R5dn

    R5n

    T3

    T3a

    u-6tb1.metal

    u-9tb1.metal

    u-12tb1.metal

    u-18tb1.metal

    u-24tb1.metal

    X1

    X1e

    z1d

    A workaround is to stop the instance, change the type to a non-ENA driver NIC type, and continue with downgrading.

    Previous
    Next