BFD Overview
Table of Contents
9.1 (EoL)
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- Objects > Addresses
- Objects > Address Groups
- Objects > Regions
- Objects > Dynamic User Groups
- Objects > Application Groups
- Objects > Application Filters
- Objects > Services
- Objects > Service Groups
- Objects > External Dynamic Lists
- Objects > Custom Objects > Spyware/Vulnerability
- Objects > Custom Objects > URL Category
- Objects > Security Profiles > Antivirus
- Objects > Security Profiles > Anti-Spyware Profile
- Objects > Security Profiles > Vulnerability Protection
- Objects > Security Profiles > File Blocking
- Objects > Security Profiles > WildFire Analysis
- Objects > Security Profiles > Data Filtering
- Objects > Security Profiles > DoS Protection
- Objects > Security Profiles > GTP Protection
- Objects > Security Profiles > SCTP Protection
- Objects > Security Profile Groups
- Objects > Log Forwarding
- Objects > Authentication
- Objects > Decryption > Forwarding Profile
- Objects > Schedules
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- Firewall Interfaces Overview
- Common Building Blocks for Firewall Interfaces
- Common Building Blocks for PA-7000 Series Firewall Interfaces
- Tap Interface
- HA Interface
- Virtual Wire Interface
- Virtual Wire Subinterface
- PA-7000 Series Layer 2 Interface
- PA-7000 Series Layer 2 Subinterface
- PA-7000 Series Layer 3 Interface
- Layer 3 Interface
- Layer 3 Subinterface
- Log Card Interface
- Log Card Subinterface
- Decrypt Mirror Interface
- Aggregate Ethernet (AE) Interface Group
- Aggregate Ethernet (AE) Interface
- Network > Interfaces > VLAN
- Network > Interfaces > Loopback
- Network > Interfaces > Tunnel
- Network > Interfaces > SD-WAN
- Network > VLANs
- Network > Virtual Wires
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- Network > Network Profiles > GlobalProtect IPSec Crypto
- Network > Network Profiles > IPSec Crypto
- Network > Network Profiles > IKE Crypto
- Network > Network Profiles > Monitor
- Network > Network Profiles > Interface Mgmt
- Network > Network Profiles > QoS
- Network > Network Profiles > LLDP Profile
- Network > Network Profiles > SD-WAN Interface Profile
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- Device > Setup
- Device > Setup > Management
- Device > Setup > Interfaces
- Device > Setup > Telemetry
- Device > Setup > Content-ID
- Device > Setup > WildFire
- Device > Log Forwarding Card
- Device > Config Audit
- Device > Administrators
- Device > Admin Roles
- Device > Access Domain
- Device > Authentication Sequence
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- Security Policy Match
- QoS Policy Match
- Authentication Policy Match
- Decryption/SSL Policy Match
- NAT Policy Match
- Policy Based Forwarding Policy Match
- DoS Policy Match
- Routing
- Test Wildfire
- Threat Vault
- Ping
- Trace Route
- Log Collector Connectivity
- External Dynamic List
- Update Server
- Test Cloud Logging Service Status
- Test Cloud GP Service Status
- Device > Virtual Systems
- Device > Shared Gateways
- Device > Certificate Management
- Device > Certificate Management > Certificate Profile
- Device > Certificate Management > OCSP Responder
- Device > Certificate Management > SSL/TLS Service Profile
- Device > Certificate Management > SCEP
- Device > Certificate Management > SSL Decryption Exclusion
- Device > Response Pages
- Device > Server Profiles
- Device > Server Profiles > SNMP Trap
- Device > Server Profiles > Syslog
- Device > Server Profiles > Email
- Device > Server Profiles > HTTP
- Device > Server Profiles > NetFlow
- Device > Server Profiles > RADIUS
- Device > Server Profiles > TACACS+
- Device > Server Profiles > LDAP
- Device > Server Profiles > Kerberos
- Device > Server Profiles > SAML Identity Provider
- Device > Server Profiles > DNS
- Device > Server Profiles > Multi Factor Authentication
- Device > Local User Database > Users
- Device > Local User Database > User Groups
- Device > Scheduled Log Export
- Device > Software
- Device > Dynamic Updates
- Device > Licenses
- Device > Support
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- Network > GlobalProtect > MDM
- Network > GlobalProtect > Device Block List
- Network > GlobalProtect > Clientless Apps
- Network > GlobalProtect > Clientless App Groups
- Objects > GlobalProtect > HIP Profiles
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- Use the Panorama Web Interface
- Context Switch
- Panorama Commit Operations
- Defining Policies on Panorama
- Log Storage Partitions for a Panorama Virtual Appliance in Legacy Mode
- Panorama > Setup > Interfaces
- Panorama > High Availability
- Panorama > Administrators
- Panorama > Admin Roles
- Panorama > Access Domains
- Panorama > Device Groups
- Panorama > Plugins
- Panorama > Log Ingestion Profile
- Panorama > Log Settings
- Panorama > Scheduled Config Export
End-of-Life (EoL)
BFD Overview
BFD is a protocol that recognizes a failure in the bidirectional
path between two forwarding engines, such as interfaces, data links,
or the actual forwarding engines. In the PAN-OS implementation,
one of the forwarding engines is an interface on the firewall and
the other is an adjacent configured BFD peer. The BFD failure detection
between two engines is extremely fast, providing faster failover
than could be achieved by link monitoring or frequent dynamic routing health
checks, such as Hello packets or heartbeats.
After BFD detects a failure, it notifies the routing protocol
to switch to an alternate path to the peer. If BFD is configured
for a static route, the firewall removes the affected routes from
the RIB and FIB tables.
BFD is supported on the following interface types: physical Ethernet,
AE, VLAN, tunnel (Site-to-Site VPN and LSVPN), and subinterfaces
of Layer 3 interfaces. For each static route or dynamic routing
protocol, you can enable or disable BFD, select the default BFD
profile, or configure a BFD profile.