Configure BFD
Table of Contents
Expand All
|
Collapse All
Next-Generation Firewall Docs
-
PAN-OS 10.0 (EoL)
- PAN-OS 11.1 & Later
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
- PAN-OS 10.0 (EoL)
- PAN-OS 9.1 (EoL)
- Cloud Management of NGFWs
-
- Management Interfaces
-
- Launch the Web Interface
- Configure Banners, Message of the Day, and Logos
- Use the Administrator Login Activity Indicators to Detect Account Misuse
- Manage and Monitor Administrative Tasks
- Commit, Validate, and Preview Firewall Configuration Changes
- Export Configuration Table Data
- Use Global Find to Search the Firewall or Panorama Management Server
- Manage Locks for Restricting Configuration Changes
-
-
- Define Access to the Web Interface Tabs
- Provide Granular Access to the Monitor Tab
- Provide Granular Access to the Policy Tab
- Provide Granular Access to the Objects Tab
- Provide Granular Access to the Network Tab
- Provide Granular Access to the Device Tab
- Define User Privacy Settings in the Admin Role Profile
- Restrict Administrator Access to Commit and Validate Functions
- Provide Granular Access to Global Settings
- Provide Granular Access to the Panorama Tab
- Provide Granular Access to Operations Settings
- Panorama Web Interface Access Privileges
-
- Reset the Firewall to Factory Default Settings
-
- Plan Your Authentication Deployment
- Configure SAML Authentication
- Configure Kerberos Single Sign-On
- Configure Kerberos Server Authentication
- Configure TACACS+ Authentication
- Configure RADIUS Authentication
- Configure LDAP Authentication
- Configure Local Database Authentication
- Configure an Authentication Profile and Sequence
- Test Authentication Server Connectivity
- Troubleshoot Authentication Issues
-
- Keys and Certificates
- Default Trusted Certificate Authorities (CAs)
- Certificate Deployment
- Configure the Master Key
- Export a Certificate and Private Key
- Configure a Certificate Profile
- Configure an SSL/TLS Service Profile
- Configure an SSH Service Profile
- Replace the Certificate for Inbound Management Traffic
- Configure the Key Size for SSL Forward Proxy Server Certificates
-
- HA Overview
-
- Prerequisites for Active/Active HA
- Configure Active/Active HA
-
- Use Case: Configure Active/Active HA with Route-Based Redundancy
- Use Case: Configure Active/Active HA with Floating IP Addresses
- Use Case: Configure Active/Active HA with ARP Load-Sharing
- Use Case: Configure Active/Active HA with Floating IP Address Bound to Active-Primary Firewall
- Use Case: Configure Active/Active HA with Source DIPP NAT Using Floating IP Addresses
- Use Case: Configure Separate Source NAT IP Address Pools for Active/Active HA Firewalls
- Use Case: Configure Active/Active HA for ARP Load-Sharing with Destination NAT
- Use Case: Configure Active/Active HA for ARP Load-Sharing with Destination NAT in Layer 3
- HA Clustering Overview
- HA Clustering Best Practices and Provisioning
- Configure HA Clustering
- Refresh HA1 SSH Keys and Configure Key Options
- HA Firewall States
-
- Use the Dashboard
- Monitor Applications and Threats
- Monitor Block List
-
- Report Types
- View Reports
- Configure the Expiration Period and Run Time for Reports
- Disable Predefined Reports
- Custom Reports
- Generate Custom Reports
- Generate the SaaS Application Usage Report
- Manage PDF Summary Reports
- Generate User/Group Activity Reports
- Manage Report Groups
- Schedule Reports for Email Delivery
- Manage Report Storage Capacity
- View Policy Rule Usage
- Use External Services for Monitoring
- Configure Log Forwarding
- Configure Email Alerts
-
- Configure Syslog Monitoring
-
- Traffic Log Fields
- Threat Log Fields
- URL Filtering Log Fields
- Data Filtering Log Fields
- HIP Match Log Fields
- GlobalProtect Log Fields
- IP-Tag Log Fields
- User-ID Log Fields
- Decryption Log Fields
- Tunnel Inspection Log Fields
- SCTP Log Fields
- Authentication Log Fields
- Config Log Fields
- System Log Fields
- Correlated Events Log Fields
- GTP Log Fields
- Syslog Severity
- Custom Log/Event Format
- Escape Sequences
- Forward Logs to an HTTP/S Destination
- Firewall Interface Identifiers in SNMP Managers and NetFlow Collectors
- Monitor Transceivers
-
- User-ID Overview
- Enable User-ID
- Map Users to Groups
- Enable User- and Group-Based Policy
- Enable Policy for Users with Multiple Accounts
- Verify the User-ID Configuration
-
- App-ID Overview
- App-ID and HTTP/2 Inspection
- Manage Custom or Unknown Applications
- Safely Enable Applications on Default Ports
- Applications with Implicit Support
- Application Level Gateways
- Disable the SIP Application-level Gateway (ALG)
- Maintain Custom Timeouts for Data Center Applications
-
- Best Practices for Securing Your Network from Layer 4 and Layer 7 Evasions
- Set Up Antivirus, Anti-Spyware, and Vulnerability Protection
- Set Up File Blocking
- Prevent Brute Force Attacks
- Customize the Action and Trigger Conditions for a Brute Force Signature
- Enable Evasion Signatures
- Monitor Blocked IP Addresses
- Threat Signature Categories
- Create Threat Exceptions
- Custom Signatures
- Share Threat Intelligence with Palo Alto Networks
- Threat Prevention Resources
-
- Decryption Overview
-
- Keys and Certificates for Decryption Policies
- SSL Forward Proxy
- SSL Forward Proxy Decryption Profile
- SSL Inbound Inspection
- SSL Inbound Inspection Decryption Profile
- SSL Protocol Settings Decryption Profile
- SSH Proxy
- SSH Proxy Decryption Profile
- Profile for No Decryption
- SSL Decryption for Elliptical Curve Cryptography (ECC) Certificates
- Perfect Forward Secrecy (PFS) Support for SSL Decryption
- SSL Decryption and Subject Alternative Names (SANs)
- TLSv1.3 Decryption
- High Availability Support for Decrypted Sessions
- Decryption Mirroring
- Configure SSL Forward Proxy
- Configure SSL Inbound Inspection
- Configure SSH Proxy
- Configure Server Certificate Verification for Undecrypted Traffic
- Enable Users to Opt Out of SSL Decryption
- Temporarily Disable SSL Decryption
- Configure Decryption Port Mirroring
- Verify Decryption
-
- How Decryption Broker Works
- Layer 3 Security Chain Guidelines
- Configure Decryption Broker with One or More Layer 3 Security Chain
- Transparent Bridge Security Chain Guidelines
- Configure Decryption Broker with a Single Transparent Bridge Security Chain
- Configure Decryption Broker with Multiple Transparent Bridge Security Chains
- Activate Free Licenses for Decryption Features
-
- About Palo Alto Networks URL Filtering Solution
- How Advanced URL Filtering Works
- URL Filtering Inline ML
- URL Filtering Use Cases
- Plan Your URL Filtering Deployment
- URL Filtering Best Practices
- Activate The Advanced URL Filtering Subscription
- Test URL Filtering Configuration
- Configure URL Filtering
- Configure URL Filtering Inline ML
- Log Only the Page a User Visits
- Create a Custom URL Category
- URL Category Exceptions
- Use an External Dynamic List in a URL Filtering Profile
- Allow Password Access to Certain Sites
- URL Filtering Response Pages
- Customize the URL Filtering Response Pages
- HTTP Header Logging
- Request to Change the Category for a URL
-
-
- Tap Interfaces
-
- Layer 2 and Layer 3 Packets over a Virtual Wire
- Port Speeds of Virtual Wire Interfaces
- LLDP over a Virtual Wire
- Aggregated Interfaces for a Virtual Wire
- Virtual Wire Support of High Availability
- Zone Protection for a Virtual Wire Interface
- VLAN-Tagged Traffic
- Virtual Wire Subinterfaces
- Configure Virtual Wires
- Configure an Aggregate Interface Group
- Configure Bonjour Reflector for Network Segmentation
- Use Interface Management Profiles to Restrict Access
- Virtual Routers
- Service Routes
- RIP
- Route Redistribution
-
- DNS Overview
- DNS Proxy Object
- DNS Server Profile
- Multi-Tenant DNS Deployments
- Configure a DNS Proxy Object
- Configure a DNS Server Profile
- Use Case 1: Firewall Requires DNS Resolution
- Use Case 2: ISP Tenant Uses DNS Proxy to Handle DNS Resolution for Security Policies, Reporting, and Services within its Virtual System
- Use Case 3: Firewall Acts as DNS Proxy Between Client and Server
- DNS Proxy Rule and FQDN Matching
- Dynamic DNS Overview
- Configure Dynamic DNS for Firewall Interfaces
-
- NAT Rule Capacities
- Dynamic IP and Port NAT Oversubscription
- Dataplane NAT Memory Statistics
-
- Translate Internal Client IP Addresses to Your Public IP Address (Source DIPP NAT)
- Enable Clients on the Internal Network to Access your Public Servers (Destination U-Turn NAT)
- Enable Bi-Directional Address Translation for Your Public-Facing Servers (Static Source NAT)
- Configure Destination NAT with DNS Rewrite
- Configure Destination NAT Using Dynamic IP Addresses
- Modify the Oversubscription Rate for DIPP NAT
- Reserve Dynamic IP NAT Addresses
- Disable NAT for a Specific Host or Interface
-
-
- Policy Types
- Policy Objects
- Track Rules Within a Rulebase
- Enforce Policy Rule Description, Tag, and Audit Comment
- Move or Clone a Policy Rule or Object to a Different Virtual System
-
- External Dynamic List
- Built-in External Dynamic Lists
- Configure the Firewall to Access an External Dynamic List
- Retrieve an External Dynamic List from the Web Server
- View External Dynamic List Entries
- Exclude Entries from an External Dynamic List
- Enforce Policy on an External Dynamic List
- Find External Dynamic Lists That Failed Authentication
- Disable Authentication for an External Dynamic List
- Register IP Addresses and Tags Dynamically
- Use Dynamic User Groups in Policy
- Use Auto-Tagging to Automate Security Actions
- CLI Commands for Dynamic IP Addresses and Tags
- Test Policy Rules
-
- Network Segmentation Using Zones
- How Do Zones Protect the Network?
-
PAN-OS 11.1 & Later
- PAN-OS 11.1 & Later
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
-
- Tap Interfaces
-
- Layer 2 and Layer 3 Packets over a Virtual Wire
- Port Speeds of Virtual Wire Interfaces
- LLDP over a Virtual Wire
- Aggregated Interfaces for a Virtual Wire
- Virtual Wire Support of High Availability
- Zone Protection for a Virtual Wire Interface
- VLAN-Tagged Traffic
- Virtual Wire Subinterfaces
- Configure Virtual Wires
- Configure a PPPoE Client on a Subinterface
- Configure an IPv6 PPPoE Client
- Configure an Aggregate Interface Group
- Configure Bonjour Reflector for Network Segmentation
- Use Interface Management Profiles to Restrict Access
-
- DHCP Overview
- Firewall as a DHCP Server and Client
- Firewall as a DHCPv6 Client
- DHCP Messages
- Dynamic IPv6 Addressing on the Management Interface
- Configure an Interface as a DHCP Server
- Configure an Interface as a DHCPv4 Client
- Configure an Interface as a DHCPv6 Client with Prefix Delegation
- Configure the Management Interface as a DHCP Client
- Configure the Management Interface for Dynamic IPv6 Address Assignment
- Configure an Interface as a DHCP Relay Agent
-
- DNS Overview
- DNS Proxy Object
- DNS Server Profile
- Multi-Tenant DNS Deployments
- Configure a DNS Proxy Object
- Configure a DNS Server Profile
- Use Case 1: Firewall Requires DNS Resolution
- Use Case 2: ISP Tenant Uses DNS Proxy to Handle DNS Resolution for Security Policies, Reporting, and Services within its Virtual System
- Use Case 3: Firewall Acts as DNS Proxy Between Client and Server
- DNS Proxy Rule and FQDN Matching
-
- NAT Rule Capacities
- Dynamic IP and Port NAT Oversubscription
- Dataplane NAT Memory Statistics
-
- Translate Internal Client IP Addresses to Your Public IP Address (Source DIPP NAT)
- Create a Source NAT Rule with Persistent DIPP
- PAN-OS
- Strata Cloud Manager
- Enable Clients on the Internal Network to Access your Public Servers (Destination U-Turn NAT)
- Enable Bi-Directional Address Translation for Your Public-Facing Servers (Static Source NAT)
- Configure Destination NAT with DNS Rewrite
- Configure Destination NAT Using Dynamic IP Addresses
- Modify the Oversubscription Rate for DIPP NAT
- Reserve Dynamic IP NAT Addresses
- Disable NAT for a Specific Host or Interface
-
- Network Packet Broker Overview
- How Network Packet Broker Works
- Prepare to Deploy Network Packet Broker
- Configure Transparent Bridge Security Chains
- Configure Routed Layer 3 Security Chains
- Network Packet Broker HA Support
- User Interface Changes for Network Packet Broker
- Limitations of Network Packet Broker
- Troubleshoot Network Packet Broker
-
- Enable Advanced Routing
- Logical Router Overview
- Configure a Logical Router
- Create a Static Route
- Configure BGP on an Advanced Routing Engine
- Create BGP Routing Profiles
- Create Filters for the Advanced Routing Engine
- Configure OSPFv2 on an Advanced Routing Engine
- Create OSPF Routing Profiles
- Configure OSPFv3 on an Advanced Routing Engine
- Create OSPFv3 Routing Profiles
- Configure RIPv2 on an Advanced Routing Engine
- Create RIPv2 Routing Profiles
- Create BFD Profiles
- Configure IPv4 Multicast
- Configure MSDP
- Create Multicast Routing Profiles
- Create an IPv4 MRoute
-
-
PAN-OS 11.2
- PAN-OS 11.2
- PAN-OS 11.1
- PAN-OS 11.0 (EoL)
- PAN-OS 10.2
- PAN-OS 10.1
- PAN-OS 10.0 (EoL)
- PAN-OS 9.1 (EoL)
- PAN-OS 9.0 (EoL)
- PAN-OS 8.1 (EoL)
- Cloud Management and AIOps for NGFW
End-of-Life (EoL)
Configure BFD
After you read the BFD Overview, which
includes firewall models and interfaces supported, perform the following before
configuring BFD:
- Configure one or more Virtual Routers.
- Configure one or more Static Routes if you are applying BFD to static routes.
The
effectiveness of your BFD implementation depends on a variety of
factors, such as traffic loads, network conditions, how aggressive your
BFD settings are, and how busy the dataplane is.
- Create
a BFD profile.If you change a setting in a BFD profile that an existing BFD session is using and you commit the change, before the firewall deletes that BFD session and recreates it with the new setting, the firewall sends a BFD packet with the local state set to admin down. The peer device may or may not flap the routing protocol or static route, depending on the peer’s implementation of RFC 5882, Section 3.2.
- Select NetworkNetwork ProfilesBFD Profile and Add a Name for the BFD profile. The name is case-sensitive and must be unique on the firewall. Use only letters, numbers, spaces, hyphens, and underscores.
- Select the Mode in which BFD
operates:
- Active—BFD initiates sending control packets to peer (default). At least one of the BFD peers must be Active; both can be Active.
- Passive—BFD waits for peer to send control packets and responds as required.
- Configure BFD intervals.
- Enter the Desired Minimum Tx
Interval (ms). This is the minimum interval, in milliseconds,
at which you want the BFD protocol (referred to as BFD) to send
BFD control packets; you are thus negotiating the transmit interval
with the peer. Minimum on PA-7000 and PA-5200 Series firewalls is
50; minimum on VM-Series firewall is 200. Maximum is 2,000; default
is 1,000.The recommendation is to set the Desired Minimum Tx Interval on a PA-7000 Series firewall to 100 or greater; a value less than 100 is at risk of causing BFD flaps.If you have multiple routing protocols that use different BFD profiles on the same interface, configure the BFD profiles with the same Desired Minimum Tx Interval.
- Enter the Required Minimum Rx Interval
(ms). This is the minimum interval, in milliseconds,
at which BFD can receive BFD control packets. Minimum on PA-7000
and PA-5200 Series firewalls is 50; minimum on VM-Series firewall
is 200. Maximum is 2,000; default is 1,000.The recommendation is to set the Required Minimum Rx Interval on a PA-7000 Series firewall to 100 or greater; a value less than 100 is at risk of causing BFD flaps.
- Enter the Desired Minimum Tx
Interval (ms). This is the minimum interval, in milliseconds,
at which you want the BFD protocol (referred to as BFD) to send
BFD control packets; you are thus negotiating the transmit interval
with the peer. Minimum on PA-7000 and PA-5200 Series firewalls is
50; minimum on VM-Series firewall is 200. Maximum is 2,000; default
is 1,000.
- Configure the BFD Detection Time Multiplier.Enter the Detection Time Multiplier. The local system calculates the detection time as the Detection Time Multiplier received from the remote system multiplied by the agreed transmit interval of the remote system (the greater of the Required Minimum Rx Interval and the last received Desired Minimum Tx Interval). If BFD does not receive a BFD control packet from its peer before the detection time expires, a failure has occurred. Range is 2 to 50; default is 3.For example, a transmit interval of 300 ms x 3 (Detection Time Multiplier) = 900 ms detection time.When configuring a BFD profile, take into consideration that the firewall is a session-based device typically at the edge of a network or data center and may have slower links than a dedicated router. Therefore, the firewall likely needs a longer interval and a higher multiplier than the fastest settings allowed. A detection time that is too short can cause false failure detections when the issue is really just traffic congestion.
- Configure the BFD hold time.Enter the Hold Time (ms). This is the delay, in milliseconds, after a link comes up before BFD transmits BFD control packets. Hold Time applies to BFD Active mode only. If BFD receives BFD control packets during the Hold Time, it ignores them. Range is 0-120000. The default is 0, which means no transmit Hold Time is used; BFD sends and receives BFD control packets immediately after the link is established.
- (Optional—For a BGP IPv4 implementation only)
Configure hop-related settings for the BFD profile.
- Select Multihop to enable BFD over BGP multihop.
- Enter the Minimum Rx TTL.This
is the minimum Time-to-Live value (number of hops) BFD will accept
(receive) in a BFD control packet when BGP supports multihop BFD.
(Range is 1-254; there is no default).The firewall drops the packet if it receives a smaller TTL than its configured Minimum Rx TTL. For example, if the peer is 5 hops away, and the peer transmits a BFD packet with a TTL of 100 to the firewall, and if the Minimum Rx TTL for the firewall is set to 96 or higher, the firewall drops the packet.
- Save the BFD profile.Click OK.
- (Optional) Enable BFD for a static route.Both the firewall and the peer at the opposite end of the static route must support BFD sessions.
- Select NetworkVirtual Routers and select the virtual router where the static route is configured.
- Select the Static Routes tab.
- Select the IPv4 or IPv6 tab.
- Select the static route where you want to apply BFD.
- Select an Interface (even if you are using a DHCP address). The Interface setting cannot be None.
- For Next Hop, select IP Address and enter the IP address if not already specified.
- For BFD Profile, select one
of the following:
- default—Uses only default settings.
- A BFD profile you configured—SeeCreate a BFD profile.
- New BFD Profile—Allows you toCreate a BFD profile.Selecting None (Disable BFD) disables BFD for this static route.
- Click OK.
A BFD column on the IPv4 or IPv6 tab indicates the BFD profile configured for the static route. - (Optional) Enable BFD for all BGP interfaces
or for a single BGP peer.If you enable or disable BFD globally, all interfaces running BGP will be taken down and brought back up with the BFD function. This can disrupt all BGP traffic. When you enable BFD on the interface, the firewall stops the BGP connection to the peer to program BFD on the interface. The peer device sees the BGP connection drop, which can result in a reconvergence. Enable BFD for BGP interfaces during an off-peak time when a reconvergence will not impact production traffic.If you implement both BFD for BGP and HA path monitoring, Palo Alto Networks recommends you not implement BGP Graceful Restart. When the BFD peer’s interface fails and path monitoring fails, BFD can remove the affected routes from the routing table and synchronize this change to the passive HA firewall before Graceful Restart can take effect. If you decide to implement BFD for BGP, Graceful Restart for BGP, and HA path monitoring, you should configure BFD with a larger Desired Minimum Tx Interval and larger Detection Time Multiplier than the default values.
- Select NetworkVirtual Routers and select the virtual router where BGP is configured.
- Select the BGP tab.
- (Optional) To apply BFD to all BGP interfaces
on the virtual router, in the BFD list, select
one of the following and click OK:
- default—Uses only default settings.
- A BFD profile you configured—SeeCreate a BFD profile.
- New BFD Profile—Allows you toCreate a BFD profile.
Selecting None (Disable BFD) disables BFD for all BGP interfaces on the virtual router; you cannot enable BFD for a single BGP interface. - (Optional) To enable BFD for a single BGP
peer interface (thereby overriding the BFD setting
for BGP as long as it is not disabled), perform the following tasks:
- Select the Peer Group tab.
- Select a peer group.
- Select a peer.
- In the BFD list, select one of the following:default—Uses only default settings.Inherit-vr-global-setting (default)—The BGP peer inherits the BFD profile that you selected globally for BGP for the virtual router.A BFD profile you configured—SeeCreate a BFD profile.Selecting Disable BFD disables BFD for the BGP peer.
- Click OK.
- Click OK.
A BFD column on the BGP - Peer Group/Peer list indicates the BFD profile configured for the interface. - (Optional) Enable BFD for OSPF or OSPFv3 globally
or for an OSPF interface.
- Select NetworkVirtual Routers and select the virtual router where OSPF or OSPFv3 is configured.
- Select the OSPF or OSPFv3 tab.
- (Optional) In the BFD list,
select one of the following to enable BFD for all OSPF or OSPFv3
interfaces and click OK:
- default—Uses only default settings.
- A BFD profile you configured—SeeCreate a BFD profile.
- New BFD Profile—Allows you toCreate a BFD profile.Selecting None (Disable BFD) disables BFD for all OSPF interfaces on the virtual router; you cannot enable BFD for a single OSPF interface.
- (Optional) To enable BFD on a single OSPF
peer interface (and thereby override the BFD setting
for OSPF, as long as it is not disabled), perform the following
tasks:
- Select the Areas tab and select an area.
- On the Interface tab, select an interface.
- In the BFD list, select one of the following to configure BFD for the specified OSPF peer:default—Uses only default settings.Inherit-vr-global-setting (default)—OSPF peer inherits the BFD setting for OSPF or OSPFv3 for the virtual router.A BFD profile you configured—SeeCreate a BFD profile.Selecting Disable BFD disables BFD for the OSPF or OSPFv3 interface.
- Click OK.
- Click OK.
A BFD column on the OSPF Interface tab indicates the BFD profile configured for the interface. - (Optional) Enable BFD for RIP globally or for
a single RIP interface.
- Select NetworkVirtual Routers and select the virtual router where RIP is configured.
- Select the RIP tab.
- (Optional) In the BFD list,
select one of the following to enable BFD for all RIP interfaces
on the virtual router and click OK:
- default—Uses only default settings.
- A BFD profile you configured—SeeCreate a BFD profile.
- New BFD Profile—Allows you toCreate a BFD profile.Selecting None (Disable BFD) disables BFD for all RIP interfaces on the virtual router; you cannot enable BFD for a single RIP interface.
- (Optional) To enable BFD for a single RIP
interface (and thereby override the BFD setting
for RIP, as long as it is not disabled), perform the following tasks:
- Select the Interfaces tab and select an interface.
- In the BFD list, select one of the following:default—Uses only default settings).Inherit-vr-global-setting (default)—RIP interface inherits the BFD profile that you selected for RIP globally for the virtual router.A BFD profile you configured—SeeCreate a BFD profile.Selecting None (Disable BFD) disables BFD for the RIP interface.
- Click OK.
- Click OK.
The BFD column on the Interface tab indicates the BFD profile configured for the interface. - Commit the configuration.Click Commit.
- View BFD
summary and details.
- Select NetworkVirtual Routers, find the virtual router you are interested in, and click More Runtime Stats.
- Select the BFD Summary Information tab to see summary information, such as BFD state and run-time statistics.
- (Optional) Select details in the row of the interface you are interested in to view Reference: BFD Details.
- Monitor BFD profiles referenced by a routing configuration;
monitor BFD statistics, status, and state.Use the following CLI operational commands:
- show routing bfd active-profile [<name>]
- show routing bfd details [interface<name>][local-ip<ip>][multihop][peer-ip <ip>][session-id][virtual-router<name>]
- show routing bfd drop-counters session-id <session-id>
- show counter global | match bfd
- (Optional) Clear BFD transmit, receive, and
drop counters.
clear routing bfd counters session-id all | <1-1024>
- (Optional) Clear BFD sessions for debugging.
clear routing bfd session-state session-id all | <1-1024>