- Kaspersky SD-WAN Help
- About Kaspersky SD-WAN
- Architecture of the solution
- Deploying Kaspersky SD-WAN
- Redundancy of solution components
- About the installation archive
- About the attended, unattended, and partially attended action modes
- Preparing the administrator device
- Managing passwords
- Preparing the configuration file
- Replacing the graphics of the orchestrator web interface
- Replacement of a failed controller node
- Upgrading Kaspersky SD-WAN
- Removing Kaspersky SD-WAN
- Logging in and out of the orchestrator web interface
- Licensing of Kaspersky SD-WAN
- User interface of the solution
- Navigating to the orchestrator API
- Managing the Kaspersky SD-WAN infrastructure
- Managing domains
- Managing data centers
- Managing management subnets
- Managing controllers
- Managing a VIM
- Managing users and their access permissions
- Multitenancy
- Managing CPE devices
- About the interaction of the CPE device and the orchestrator
- About the interaction of the CPE device and the controller
- Default credentials of KESR CPE devices
- Registering CPE devices
- Scenario: Automatic registration of a CPE device using the Zero Touch Provisioning technology.
- Scenario: Deploying a vCPE device on the VMware virtualization platform and registering it using the Zero Touch Provisioning technology
- Scenario: Re-registering a CPE device
- Resuming CPE device registration in case of an error
- Managing CPE templates
- Managing CPE devices
- Adding a CPE device
- Generating an URL with basic CPE device settings
- Manually registering a CPE device
- Unregistering a CPE device
- Specifying the address of a CPE device
- Enabling and disabling a CPE device
- Restarting a CPE device
- Shutting down a CPE device
- Connecting to the CPE device console
- Viewing the password of a CPE device
- Exporting orchestrator and controller connection settings and SD-WAN interfaces from a CPE device
- Exporting network interfaces from a CPE device
- Changing the DPID of a CPE device
- Deleting CPE devices
- Two-factor authentication of a CPE device
- Managing certificates
- Automatically deleting and disabling CPE devices
- Grouping CPE devices using tags
- Configuring logs on CPE devices
- Specifying NTP servers on CPE devices
- Managing modems
- Updating firmware
- Manually updating firmware on a CPE device
- Uploading firmware to the orchestrator web interface
- Scheduling firmware updates on selected CPE devices
- Scheduling firmware updates on CPE devices with specific tags
- Restoring firmware of a KESR-M1 CPE device
- Restoring firmware of a KESR-M2-5 CPE device
- Correspondence of CPE device models with firmware versions
- Deleting firmware
- Additional configuration of CPE devices using scripts
- Managing network interfaces
- Creating network interfaces
- Creating a network interface with automatic assignment of an IP address via DHCP
- Creating a network interface with a static IPv4 address
- Creating a network interface with a static IPv6 address
- Creating a network interface for connecting to an LTE network
- Creating a network interface for connecting to a PPPoE server
- Creating a network interface without an IP address
- Editing a network interface
- Disabling or enabling a network interface
- Canceling the application of network interface settings to a CPE device
- Deleting a network interface
- Creating network interfaces
- Configuring the connection of a CPE device to the orchestrator and controller
- Managing SD-WAN interfaces
- About sending information about SD-WAN interfaces of the WAN type to the controller
- Package fragmentation
- Traffic queues on SD-WAN interfaces
- Creating an SD-WAN interface of the WAN type
- Editing an SD-WAN interface
- Disabling or enabling an SD-WAN interface
- Deleting an SD-WAN interface of the WAN type
- Managing service interfaces
- Managing OpenFlow port groups
- Configuring a UNI for connecting CPE devices to network services
- Adding a static route
- Filtering routes and traffic packets
- Route exchange over BGP
- Route exchange over OSPF
- Using BFD to detect routing failures
- Ensuring high availability with VRRP
- Transmission of multicast traffic using PIM and IGMP protocols
- Managing virtual routing and forwarding (VRF) tables
- Monitoring traffic packet information using the NetFlow protocol
- Diagnosing a CPE device
- Running tasks on CPE devices
- IP address and subnet ranges for CPE devices
- Managing the firewall
- Managing network services and virtualization of network functions
- Managing network service templates
- Managing network services
- Scenario: Deploying a virtual network function
- Scenario: Deploying a physical network function
- Managing VNF and PNF packages
- Specifying a brief description of a shared network service
- Managing virtual network functions
- Selecting the flavour of a virtual network function
- Configuring external connection points of a virtual network function
- Basic settings of a virtual network function
- Hosting the virtual network function in a data center and on a uCPE device
- Stopping or starting a virtual network function or a VDU that is part of it
- Pausing or unpausing a virtual network function or a VDU that is part of it
- Suspending or unsuspending a virtual network function or a VDU that is part of it
- Soft rebooting a virtual network function or a VDU that is part of it
- Hard rebooting of a virtual network function or a VDU that is part of it
- Redeploying a virtual network function or a VDU that is part of it
- Auto-healing a virtual network function or a VDU that is part of it
- Managing VDU snapshots
- Managing physical network functions
- Configuring a P2P service
- Configuring a P2M service
- Configuring an M2M service
- Configuring a shared network (OS 2 SHARED)
- Configuring a virtual router (OS vRouter)
- Configuring a VLAN
- Configuring a VXLAN
- Configuring a flat network
- Configuring a UNI
- Monitoring solution components
- Specifying the Zabbix server
- Specifying the Zabbix proxy server
- Configuring CPE device monitoring
- Viewing monitoring results
- Viewing problems
- Viewing the status of the solution and its components
- Viewing logs
- Viewing and deleting service requests
- Sending CPE device notifications to users
- Selecting the Docker container log verbosity
- Monitoring CPE, VNF, and PNF devices using SNMP
- Link monitoring
- Building an SD-WAN network between CPE devices
- Quality of Service (QoS)
- Transmission of traffic between CPE devices and client devices using transport services
- Traffic packet duplication
- Scenario: Directing application traffic to a transport service
- Scenario: Establishing L2 connectivity between CPE devices
- Managing Point-to-Point (P2P) transport services
- Managing Point-to-Multipoint (P2M) transport services
- Managing Multipoint-to-Multipoint (M2M) transport services
- Managing IP multicast transport services
- Managing L3 VPN transport services
- Managing transport services in an SD-WAN instance template
- Managing transport services in a CPE template
- Traffic mirroring and forwarding between CPE devices
- Integration with Kaspersky CyberSecurity for Networks
- Appendices
- Glossary
- Control plane
- Controller
- Customer Premise Equipment (CPE)
- Data plane
- Orchestrator
- Physical Network Function (PNF)
- PNF package
- Port security
- SD-WAN Gateway
- SD-WAN instance
- Software-Defined Networking (SDN)
- Software-Defined Wide Area Network (SD-WAN)
- Tenant
- Transport strategy
- Universal CPE (uCPE)
- Virtual Deployment Unit (VDU)
- Virtual Infrastructure Manager (VIM)
- Virtual Network Function (VNF)
- Virtual Network Function Manager (VNFM)
- VNF Package
- Contacting Technical Support
- Information about third-party code
- Trademark notices
Building an SD-WAN network between CPE devices > Managing links > Connectivity Fault Management (CFM)
Connectivity Fault Management (CFM)
Connectivity Fault Management (CFM)
The Connectivity Fault Management (hereinafter also CFM) functionality allows detecting unavailable links between CPE devices. When CFM is enabled, the CPE device sends Continuity Check Message (CCM) control packets over its links at the specified intervals, and listens for response control packets on opposite-direction links. If response control packets do not arrive, the CPE device considers the link unavailable and starts transmitting traffic over a randomly selected available link.
The response timeout is equal to the control packet sending interval times 3.5. The time it takes to switch a CPE device over to a new connection when no response packets are received is equal to the control packet sending interval multiplied by a number in the range from 3.5 to 7. For example, if you specified 300 milliseconds as the time interval for sending control packets, the response timeout is 1.05 seconds, and the time it takes to switch the CPE device to a new link is 1.05 to 2.1 seconds.
You can enable CFM on a CPE device or link:
- A CPE device with CFM enabled sends control packets over all of its links, including new links that will be established in the future. If you specify different time intervals for sending control packages on CPE devices, the largest of the specified time intervals is used. For example, if you specified 300 milliseconds as the control packet interval on CPE 1, and 1 second on CPE 2, the control packet interval is 1 second.
When CFM is enabled on one CPE device and disabled on the other CPE device, the CPE device with CFM enabled takes precedence. In this case, CPE devices send control packets to each other over all of their links.
- When CFM is enabled for a link, the CPE device sends control packets over that link only. When you enable CFM for a link, you must also enable CFM on the opposite-direction link. The time interval for sending control packets set for the link overrides the time intervals for sending control packets set on CPE devices. For example, if you specified 300 milliseconds as the control packet interval on CPE 1, 1 second on CPE 2, and 10 seconds on the link between CPE 1 and CPE 2, the resulting time interval for sending control packets is 10 seconds.
For example, you can enable CFM on a CPE device and disable CFM on one of the links of that CPE device. In this case, the CPE device sends control packets over all its links, except for the link on which CFM is disabled. By default, CFM is disabled on CPE devices and links.
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Article ID: 286608, Last review: Nov 25, 2024