dhcp-server (dhcpv4-server-policy-config)

Configures the activation-criteria (run-criteria) that triggers dynamic activation of DHCP service running on a redundancy device

In a managed wireless network, when the primary, active DHCP server fails (is unreachable), network clients are unable to access DHCP services, such as new IP address leasing and renewal of existing IP address leases. In such a scenario, the activation-criteria, when configured, triggers dynamic activation of the secondary DHCP server, allowing network clients to continue accessing DHCP services. The WiNG implementation provides activation-criteria options specific to a RF Domain, cluster setup, and a Virtual Router Redundancy Protocol (VRRP) master/client setup.

Supported in the following platforms:

Syntax

dhcp-server activation-criteria [cluster-master|rf-domain-manager|vrrp-master]

Parameters

dhcp-server activation-criteria [cluster-master|rf-domain-manager|vrrp-master]
dhcp-server Enables dynamic activation of the DHCP server, running on a redundancy device, based on the activation criteria specified
activation-criteria [cluster-master| rf-domain-manager| vrrp-master] Configures the activation criteria. Specify one of the following options as the activation criteria:
  • cluster-master – Configures the cluster-master criteria in a cluster setup. Within a cluster, DHCP service is enabled on the cluster master. While it remains disabled on the other cluster members. In case of the cluster master failing, the cluster-master activation criteria, when configured, triggers dynamic activation of DHCP service on the new cluster master.
  • rf-domain-manger – Configures the rf-domain-manager criteria on an RF Domain. Within a RF Domain, DHCP service is enabled on the RF Domain manager. While it remains disabled on the other devices within the RF Domain. In case of the RF Domain manager failing, the rf-domain-manager activation criteria, when configured, triggers dynamic activation of DHCP service on the new RF Domain manager.
  • vrrp-master – Configures the vrrp-master criteria within a VRRP master/client setup. In such a setup, the DHCP service is enabled on the VRRP master. While it remains disabled on the other members. In case of the VRRP master failing, the vrrp-master activation criteria, when configured, triggers dynamic activation of DHCP service on the new VRRP master.

Examples

nx9500-6C8809(config-dhcp-policy-test)#dhcp-server activation-criteria rf-domain-manager
nx9500-6C8809(config-dhcp-policy-test)#show context
dhcp-server-policy test
 dhcp-server activation-criteria rf-domain-manager
nx9500-6C8809(config-dhcp-policy-test)#
nx9500-6C8809(config-dhcp-policy-test)#no dhcp-server activation-criteria
nx9500-6C8809(config-dhcp-policy-test)#show context
dhcp-server-policy test
nx9500-6C8809(config-dhcp-policy-test)#

Related Commands

no (dhcpv4-server-policy-config) Removes the DHCP service activation criteria configured on this DHCP server policy
9036514-01 Rev AA