Liveness detection for an authenticated client session

A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising:

• one or more instructions that, when executed by one or more processors of a network node, cause the network node to:
• maintain parameters of an authenticated client session for a client device with a dynamic host configuration protocol (DHCP) server,
• wherein the parameters include particular instructions for providing an address resolution protocol (ARP) message or a neighbor solicitation (NS) message to trigger a response from the client device before removing the parameters,
• wherein the particular instructions include a vendor specific attribute (VSA) that specifies a periodicity at which to trigger the ARP message or the NS message;
• determine inactivity of the client device in the authenticated client session;
• provide, based on the inactivity of the client device and the particular instructions, the ARP message or the NS message to trigger the response from the client device;
• and
• maintain, based on receiving the response from the client device, the parameters in a data structure of the network node.

A network node, comprising:

• one or more memories;
• and
• one or more processors to:
• maintain parameters of an authenticated client session for a client device with a dynamic host configuration protocol (DHCP) server,
• wherein the parameters include particular instructions for providing an address resolution protocol (ARP) message or a neighbor solicitation (NS) message to trigger a response from the client device before removing the parameters,
• wherein the particular instructions include a vendor specific attribute (VSA) that specifies a periodicity at which to trigger the ARP message or the NS message;
• determine inactivity of the client device in the authenticated client session;
• provide, based on the inactivity of the client device and the particular instructions, the ARP message or the NS message to trigger the response from the client device;
• and
• maintain, based on receiving the response from the client device, the parameters in a data structure of the network node.