awk '!x[$0]++'  report_file

if your are using solaris use

nawk '!x[$0]++'  report_file

awk '
        /^RP/ {
                if ( device && E_port_type )
                {
                        print "Device Name:", device
                        print RS "Port Type: ", E_port_type
                        print E_capacity, "Capacity"
                        print E_port_in_u, "Port in use"
                        print E_port_nt_u, "Port not in use"
                }
                if ( device && G_port_type )
                {
                        print RS "Port Type:", G_port_type
                        print G_capacity, "Capacity"
                        print G_port_in_u, "Port in use"
                        print G_port_nt_u, "Port not in use"
                }
                if ( device && T_port_type )
                {
                        print RS "Port Type:", T_port_type
                        print T_capacity, "Capacity"
                        print T_port_in_u, "Port in use"
                        print T_port_nt_u, "Port not in use"
                }
                device = ""
                E_port_type = E_capacity = E_port_in_u = E_port_nt_u = ""
                G_port_type = G_capacity = G_port_in_u = G_port_nt_u = ""
                T_port_type = T_capacity = T_port_in_u = T_port_nt_u = ""
                gsub (/.*:|#/, X)
                device = $0
        }
        /IFT_ETHERBUNDLE/ {
                E_port_type = $1
                E_capacity  = $2
                E_port_in_u = $3 + $4
                E_port_nt_u = $5
        }
        /IFT_GETHERNET/ {
                G_port_type = $1
                G_capacity  = $2
                G_port_in_u = $3 + $4
                G_port_nt_u = $5
        }
        /IFT_TENGETHERNET/ {
                T_port_type = $1
                T_capacity  = $2
                T_port_in_u = $3 + $4
                T_port_nt_u = $5
        }
' OFS='\t' file