This object contains parameters for monitoring the connection status of interfaces. It allows the Device to monitor interfaces using ARP (Address Resolution Protocol) or ND (Neighbor Discovery) packets, depending on the IP version used by the interface. The CPE can enable or disable the connection monitor and configure individual entries for each interface. Each entry can be enabled or disabled independently, allowing for flexible monitoring configurations. Enables or disables the connection monitor. The current operational state of the monitor. {{numentries}} This object contains parameters for monitoring the connection. The device can enable or disable the connection monitor and configure individual entries for different interfaces. Depending on {{param|Method}}, the device can use different methods to test connectivity, such as ARP, ND, Ping, BFDEcho or DNS. During normal operation, a connectivity check is performed every {{param|MonitorInterval}}. If a check fails, due to no response within {{param|MaxResponseTimeout}}, then the device enters a failure state. In this failure state, it performs subsequent checks more frequently, every {{param|FailInterval}}. The {{param|NumberOfAttempts}} counter is incremented for each failed check and the value of the parameter {{param|MonitoringStatus}} status is set to {{enum|Unresponsive|MonitoringStatus}}. If this counter equals the {{param|Action.{i}.AttemptCount}} threshold, the configured {{param|Action.{i}.Action}} is triggered. If a check succeeds at any point, the {{param|NumberOfAttempts}} counter is reset, the monitor interval reverts to the normal {{param|MonitorInterval}} and the {{param|MonitoringStatus}} status is set to {{enum|Up|MonitoringStatus}}. Enables or disables the entry. The current operational state of the entry. Indicates an error state for the entry, which may occur if there are issues with the connection monitoring process. Indicates an error state for the entry due to misconfiguration. This parameter specifies the interface to be monitored. Typically this is the WAN interface. The interval at which the Device monitors the connection status of the interface, in {{units}}. The interval at which the Device checks for connection failures after the initial monitor interval, in {{units}}. The maximum time the Device waits for a response after sending a connectivity test packet, in {{units}}. The current number of failed attempts when no reply is obtained. This parameter is reset to zero when the last {{object|Action}} has been executed or when a connectivity test succeeds. The connectivity test method to be performed on the {{param|Interface}}. Tests Layer 2 connectivity for IPv4 by sending an ARP Request to the default gateway. A successful ARP Reply from the gateway is required to pass the test. Tests Layer 2 connectivity for IPv6 by sending a Neighbor Solicitation (NS) message to the default gateway. A successful Neighbor Advertisement (NA) response is required to pass the test. Tests Layer 3 connectivity by sending ICMP Echo Request packets to the default gateway. A successful ICMP Echo Reply is required to pass the test. Tests Layer 2 connectivity by sending a Bidirectional Forwarding Detection Echo packet to the default gateway. A successful Echo Reply is required to pass the test. Tests DNS resolution and general Internet access by sending a query to a configured DNS server. The destination address (IP address or FQDN) to which connectivity test packets are sent. When {{param|IPVersion}} is set to '-1',the implementation will chose and use only one IP version for testing the connectivity. It will try to use IPv6 first, and if that fails, it will fall back to IPv4. When {{param|Method}} is set to {{enum|ARP|Method}} or {{enum|ND|Method}} this parameter specifies the IP address of the network device under test. The Device will send ARP requests (for IPv4) or Neighbor Solicitation messages (for IPv6) to this address to check connectivity. When {{empty}} the Device will use the default gateway IP address from the Interface specified in the {{param|Interface}} parameter. When {{param|Method}} is set to {{enum|Ping|Method}} this parameter specifies the IP address to which ICMP Echo Request packets are sent. The Device will send ICMP Echo Requests to this address to check connectivity. When {{empty}} the Device will use the default gateway IP address from the Interface specified in the {{param|Interface}} parameter. When {{param|Method}} is set to {{enum|BFDEcho|Method}} this parameter specifies the IP address to which BFD echo packets are sent. The Device will send BFD Echo packets to this address to check connectivity. When {{empty}} the Device will use the default gateway IP address from the Interface specified in the {{param|Interface}} parameter. When {{param|Method}} is set to {{enum|DNS|Method}} this parameter specifies the DNS server (IP address or FQDN) to which DNS queries are sent. When {{empty}} the Device will use the default DNS server configured on the Interface specified in the {{param|Interface}} parameter. Diffserv code point to be used for outgoing connection monitoring traffic. The Ethernet Priority for this {{object}} entry, also known as 802.1p Priority, is a 3-bit field used to indicate the priority of network traffic. A value of ''-1'' indicates that the Ethernet priority should not be changed for this {{object}}. The current monitoring status of the connection. Indicates that the monitored connection is currently up and responsive. Indicates that the monitored connection is currently unresponsive, meaning that connectivity tests have failed. {{numentries}} This object contains parameters for actions to be taken when a connection failure is detected. Each action can be configured independently and can be enabled or disabled. The Device will perform the specified action when the value of {{param|#.NumberOfAttempts}} equals the value of {{param|AttemptCount}} parameter. Multiple actions can be defined for a connection. As failures persist, the {{param|#.NumberOfAttempts}} will continue to increment, which can trigger subsequent actions with higher {{param|AttemptCount}} values. The {{param|#.NumberOfAttempts}} counter is reset to zero only after the last action has been executed or when a connectivity test succeeds. Enables or disables the {{object}} entry. Indicates the action to be taken when the connection's {{param|#.NumberOfAttempts}} is equal to the value of this parameter. This parameter indicates the action taken by the Device when a connection failure is detected. It can be used to trigger specific actions such as restarting the DHCP client or Interface. No action is taken when a connection failure is detected. Restart the DHCP client. Restart the Interface. Reboot the Device. This parameter specifies the object path to which the {{param|Action}} applies. When {{param|Action}} is set to {{enum|RestartDHCP|Action}}, this parameter specifies the path to the DHCPv4 Client instance (e.g., `Device.DHCPv4.Client.1`) that should be restarted. If this parameter is {{empty}}, the Device will attempt to restart the DHCP client associated with the {{param|#.Interface}} of the parent {{object|#.}} object. When {{param|Action}} is set to {{enum|RestartInterface|Action}}, this parameter specifies the path to the Interface instance (e.g., `Device.IP.Interface.2` or `Device.Logical.Interface.3`) that should be restarted. If this parameter is {{empty}}, the Device will restart the {{param|#.Interface}} of the parent {{object|#.}} object. When {{param|Action}} is set to {{enum|Reboot|Action}} or {{enum|None|Action}}, this parameter is not applicable and its value will be ignored. This object contains statistics for the connection monitoring entry. It provides counters for connection test failures, total triggered actions. The total number of failed attempts when no reply is obtained, since the last boot. Total amount of triggered actions since last boot.