Hello David thansk for you answer.
I have configured elrp like this:
[i][i]
[i][i]enable elrp-client
configure elrp-client periodic Default ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Admon_Datos ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Datos_P9 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Invitados_WIFI ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Voz_P9 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Admon_WIFI ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Servicios ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Aruba_2 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Aruba_3 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Aruba_4 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic Aruba_5 ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client periodic CCTV ports all interval 1 log-and-trap disable-port ingress permanent
configure elrp-client disable-port exclude 1:52
I have the LOOP in the port 1:52 but this is the trunk port to the CORE and is configured like exclude.