I think you should read documentation about CoA offered by your NAS. Then see what can likely be about *Missing Attribute* at least. You better know about all of Error-Cause it may occur. In my experience, it might be lack of key on identifying unique host. In other words, could it be your Acct-Session-Id or User-Name cannot be primary key to identify one host on the NAS? Okis. From: Muhammad Nadeem [mailto:mnadeem8327@gmail.com] Sent: Tuesday, July 23, 2013 2:00 PM To: okischuang@outlook.com Subject: Re: coa thanks all,,, i am using huawei NAS. here is the complete log echo "Acct-Session-Id=1B1E97C3,User-Name=002682615F4E@test_cpe.com,NAS-IP-Address =2.2.2.2" | radclient -x 2.2.2.2:3799 disconnect huaweiaaa Sending Disconnect-Request of id 0 to 2.2.2.2 port 3799 Acct-Session-Id = "1B1E97C3" User-Name = "002682615F4E@test_cpe.com" NAS-IP-Address = 2.2.2.2 rad_recv: Disconnect-NAK packet from host 2.2.2.2 port 3799, id=0, length=26 Error-Cause = Missing-Attribute whats wrong??? On Tue, Jul 23, 2013 at 10:58 AM, <okischuang@outlook.com> wrote: <quote author='Nadeem'> hi everybody,, I wanna implement COA (Change Of Authorization) in freeradius. I have a live session of a device, I wanna disconnect this device forcefully. I isssued following command echo "Acct-Session-Id=1B1E97C3,User-Name=002682615F4E@test_cpe.com,NAS-IP-Address =2.2.2.2" | radclient -x 2.2.2.2:3799 disconnect 'huaweiaaa' but it give the error of "missing attribute". Can anybody tell me what is the issue. Thanks -- What kind of CoA server you are using? In my experiences, coa highly depends on the type of NAS. In my case that I has a WiFi GW as CoA server, it usually gets "Missing Attributes" if I missed some *keys* of identifying unique user. Such as "NAS-IP-Address + NAS-Port-Id" or "Some-VSA-Can-Be-A-Key" or "Acct-Session-Id" and usually with priority. Besides, maybe you can post some more detailed output of your testing so that we can do more help. Okis. _____________________________________ Sent from http://freeradius.1045715.n5.nabble.com -- Best Regards Muhammad Nadeem Muhammad Ali Jinnah University