The value of the object tIPFilterParamsExtEsi specifies the ethernet segment identifier (ESI). ESI is mapped by BGP EVPN to an L2 or L3 capable appliance based on the value of tIPFilterParamsAction. 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 tIPFilterParamsExtEsi: 1. Non zero value of tIPFilterParamsExtEsi is set together with non zero values of tIPFilterParamsExtFwdEsiVRtrId, tIPFilterParamsExtFwdEsiVasIf and tIPFilterParamsExtFwdEsiSFIp. In this case value of tIPFilterParamsAction is set to 'forwardEsiL3' by the system. 2. Non zero value of tIPFilterParamsExtEsi is set together with a non zero value of tIPFilterParamsExtFwdEsiSvcId. In this case value of tIPFilterParamsAction is set to 'forwardEsiL2' by the system. Note: The value of tIPFilterParamsExtEsi is set to '0' by the system if the value of tIPFilterParamsAction is set to any value other than 'forwardEsiL2' or 'forwardEsiL3'.