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Home Documentation Junos OS Junos CLI Reference CLI Reference F

Junos CLI Reference

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Junos CLI Reference
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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failure-action

date_range 19-Nov-23
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Syntax

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failure-action (clear-binding | clear-binding-if-interface-up | log-only);

Hierarchy Level

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[edit system services dhcp-local-server liveness-detection],
[edit system services dhcp-local-server dhcpv6 liveness-detection],
[edit forwarding-options dhcp-relay liveness-detection],
[edit forwarding-options dhcp-relay dhcpv6 liveness-detection],
[edit system services dhcp-local-server group group-name liveness-detection],
[edit system services dhcp-local-server dhcpv6 group group-name liveness-detection],
[edit forwarding-options dhcp-relay group group-name liveness-detection],
[edit forwarding-options dhcp-relay dhcpv6 group group-name liveness-detection]

Description

Configure the action the router (or switch) takes when a liveness detection failure occurs.

Options

  • Default: clear-binding

clear-binding—The DHCP client session is cleared when a liveness detection failure occurs, except when maintain-subscribers interface-delete setting is configured and active.

clear-binding-if-interface-up—The DHCP client session is cleared only when a liveness detection failure occurs and the local interface is detected as being up. Use this setting to distinguish failures from between a liveness detection failure due to a local network error, and a host disconnecting from the network. If the client binding is in the maintain-binding Finite State Machine (FSM) state when the liveness detection failure detection occurs, then the binding is not deleted. Not supported for Layer 2 ARP/ND liveness detection on MX Series routers.

log-only—A message is logged to indicate the event; no action is taken and DHCP is left to manage the failure and maintain the client binding. Not supported for Layer 2 ARP/ND liveness detection on MX Series routers.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 12.1.

Related Documentation

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