Hi Alan, We have both pppoe and hotspot services. If the user reaches the max data limit we are applying fup limit by sending a coa update. But with pppoe coa is not working. So we implemented the following logic. If the user exceeded the limit, then we will check whether its pppoe or hotspot. If it is pppoe we are sending disconnect. update control { #sum of the AcctInputOctets+AcctOutputOctets for this month.(From the first day of the current month to till date) Tmp-Integer-0 := "%{sql:SELECT (SUM(acctinputoctets)+SUM(acctoutputoctets)) AS Total FROM radacct where radacct.username='%{User-Name}'}" #Value of Max-Data from the radgroupcheck for the group of the user Tmp-Integer-1 := "%{sql: SELECT radgroupcheck.value FROM radusergroup INNER JOIN radgroupcheck ON radusergroup.groupname = radgroupcheck.groupname WHERE radusergroup.username='%{User-Name}' AND radgroupcheck.attribute='Max-Data'}" Tmp-String-1 := "%{sql: SELECT radgroupcheck.value FROM radusergroup INNER JOIN radgroupcheck ON radusergroup.groupname = radgroupcheck.groupname WHERE radusergroup.username='%{User-Name}' AND radgroupcheck.attribute='Mikrotik-Rate-Limit'}" Tmp-String-3 = "%{sql:select calledstationid from radacct where acctsessionid='%{Acct-Session-Id}'}" } if ("%{control:Tmp-Integer-0}" > "%{control:Tmp-Integer-1}") { #Added these to update COA for hotspot and disconnect for PPPOE if ("%{control:Tmp-String-3}" == "hotspot1"){ update coa { User-Name = "%{User-Name}" Acct-Session-Id = "%{Acct-Session-Id}" NAS-IP-Address = "%{NAS-IP-Address}" Framed-IP-Address = "%{Framed-IP-Address}" Mikrotik-Rate-Limit = "%{control:Tmp-String-1}" } } else { echo "Acct-Session-Id=\"%{Acct-Session-Id}\"" > /tmp/\"%{User-Name}\".txt echo "User-Name=\"%{User-Name}\"" >> /tmp/\"%{User-Name}\".txt echo "NAS-IP-Address=\"%{Framed-IP-Address}\"" >> /tmp/\"%{User-Name}\".txt Secret= `grep "%{NAS-IP-Address}" /usr/local/etc/raddb/clients.conf -b2 | grep secret |awk '{print $4}' ` cat "/tmp/\"%{User-Name}\".txt" | radclient -x "%{NAS-IP-Address}":3799 disconnect "$Secret" } } But when running radiusd -XXX its giving the following error. Wed Sep 16 12:14:04 2015 : Error: /usr/local/etc/raddb/sites-enabled/default[623]: Expecting section start brace '{' after "echo Acct-Session-Id="%{Acct-Session-Id}"" Wed Sep 16 12:14:04 2015 : Error: Errors reading or parsing /usr/local/etc/raddb/radiusd.conf Please help Regards, Randeep