The value of the object tIPv6FilterParamsExtEsi specifies the ethernet segment identifier (ESI). ESI is mapped by BGP EVPN to an L2 or L3 capable appliance based on the value of tIPv6FilterParamsAction. Packets matching this entry are steered toward the L2 or L3 appliance. The value '0' indicates that there is no ESI specified. There are two options how to set the value of tIPv6FilterParamsExtEsi: 1. Non zero value of tIPv6FilterParamsExtEsi is set together with non zero values of tIPv6FilterParamsExtFwdEsiVRtrId, tIPv6FilterParamsExtFwdEsiVasIf and tIPv6FilterParamsExtFwdEsiSFIp. In this case value of tIPv6FilterParamsAction is set to 'forwardEsiL3' by the system. 2. Non zero value of tIPv6FilterParamsExtEsi is set together with a non zero value of tIPv6FilterParamsExtFwdEsiSvcId. In this case value of tIPv6FilterParamsAction is set to 'forwardEsiL2' by the system. Note: The value of tIPv6FilterParamsExtEsi is set to '0' by the system if the value of tIPv6FilterParamsAction is set to any value other than 'forwardEsiL2' or 'forwardEsiL3'.