diff --git a/Netdisco/Changes b/Netdisco/Changes
index 45edf259..e1eb8094 100644
--- a/Netdisco/Changes
+++ b/Netdisco/Changes
@@ -6,6 +6,7 @@
   * Add device/node/vlan/port specific search from Navbar
   * [#3] [#47] Device Neighbor Map can have max depth and VLAN filter
   * [#31] get_community now supported
+  * [#19] Ask for Reason when changing Port up/down Status, or VLAN
 
   [ENHANCEMENTS]
 
diff --git a/Netdisco/lib/App/Netdisco/Manual/Configuration.pod b/Netdisco/lib/App/Netdisco/Manual/Configuration.pod
index 1bff8bbf..b4119802 100644
--- a/Netdisco/lib/App/Netdisco/Manual/Configuration.pod
+++ b/Netdisco/lib/App/Netdisco/Manual/Configuration.pod
@@ -662,6 +662,26 @@ Set to false to disable the periodic AJAX check for completed entries in the
 job queue for this user. Mainly useful for development to suppress noisy web
 frontend activity.
 
+=head3 C<port_control_reasons>
+
+Value: Hash of Strings. Default:
+
+ port_control_reasons:
+   address:     'Address Allocation Abuse'
+   copyright:   'Copyright Violation'
+   dos:         'Denial of Service'
+   bandwidth:   'Excessive Bandwidth'
+   polling:     'Excessive Polling of DNS/DHCP/SNMP'
+   noserv:      'Not In Service'
+   exploit:     'Remote Exploit Possible'
+   compromised: 'System Compromised'
+   other:       'Other'
+   resolved:    'Issue Resolved'
+
+When a user has Port Control rights and shuts down a port, they are asked for
+a reason. This configuration lists those reasons, and can be overridden to add
+or remove any entries.
+
 =head2 Backend Daemon
 
 =head3 C<workers>
diff --git a/Netdisco/lib/App/Netdisco/Web/PortControl.pm b/Netdisco/lib/App/Netdisco/Web/PortControl.pm
index beb3d590..4dea3385 100644
--- a/Netdisco/lib/App/Netdisco/Web/PortControl.pm
+++ b/Netdisco/lib/App/Netdisco/Web/PortControl.pm
@@ -37,9 +37,9 @@ ajax '/ajax/portcontrol' => require_role port_control => sub {
             ip => param('device'),
             port => param('port'),
             action => $a,
-            reason => 'other',
             username => session('logged_in_user'),
             userip => request->remote_address,
+            reason => (param('reason') || 'other'),
             log => param('log'),
           });
       }
diff --git a/Netdisco/share/config.yml b/Netdisco/share/config.yml
index d739c705..b93aabc7 100644
--- a/Netdisco/share/config.yml
+++ b/Netdisco/share/config.yml
@@ -75,6 +75,8 @@ extra_web_plugins: []
 # mibdirs defaults to contents of mibhome
 community: ['public']
 community_rw: ['private']
+snmp_auth: []
+get_community: ''
 bulkwalk_off: false
 bulkwalk_no: []
 bulkwalk_repeaters: 20
@@ -122,6 +124,17 @@ portctl_nophones: false
 portctl_vlans: false
 portctl_uplinks: false
 check_userlog: true
+port_control_reasons:
+  address:     'Address Allocation Abuse'
+  copyright:   'Copyright Violation'
+  dos:         'Denial of Service'
+  bandwidth:   'Excessive Bandwidth'
+  polling:     'Excessive Polling of DNS/DHCP/SNMP'
+  noserv:      'Not In Service'
+  exploit:     'Remote Exploit Possible'
+  compromised: 'System Compromised'
+  other:       'Other'
+  resolved:    'Issue Resolved'
 
 # --------------
 # BACKEND DAEMON
diff --git a/Netdisco/share/public/javascripts/netdisco_portcontrol.js b/Netdisco/share/public/javascripts/netdisco_portcontrol.js
index 545c4733..eeab2485 100644
--- a/Netdisco/share/public/javascripts/netdisco_portcontrol.js
+++ b/Netdisco/share/public/javascripts/netdisco_portcontrol.js
@@ -4,6 +4,7 @@ var nd_save_ok = false;
 // user clicked or asked for port changes to be submitted via ajax
 function port_control (e) {
   var td = $(e).closest('td'),
+      reason = $('#nd_portlog-reason').val(),
       logmessage = $('#nd_portlog-log').val();
   $('#nd_portlog-log').val('');
 
@@ -23,7 +24,8 @@ function port_control (e) {
       ,field:  td.data('field')
       ,action: td.data('action')
       ,value:  td.text().trim()
-      ,log:    logmessage,
+      ,reason: reason
+      ,log:    logmessage
     }
     ,success: function() {
       toastr.info('Submitted change request');
@@ -119,6 +121,12 @@ $(document).ready(function() {
     $('#nd_portlog').one('hidden', function() {
       port_control(clicked); // save
     });
+    if ($(this).hasClass('icon-hand-up')) {
+      $('#nd_portlog-reason').val('resolved');
+    }
+    else {
+      $('#nd_portlog-reason').val('other');
+    }
     $('#nd_portlog').modal('show');
   });
 
diff --git a/Netdisco/share/views/ajax/device/ports.tt b/Netdisco/share/views/ajax/device/ports.tt
index dd0eeb13..f4075bb5 100644
--- a/Netdisco/share/views/ajax/device/ports.tt
+++ b/Netdisco/share/views/ajax/device/ports.tt
@@ -279,6 +279,15 @@
 <div id="nd_portlog" class="nd_modal nd_deep-horizon modal hide fade" tabindex="-1"
     role="dialog" aria-hidden="true">
   <div class="modal-body">
+    <blockquote>
+      <ul><li><p>Please provide a reason for chainging the Port Configuration</p></li></ul>
+    </blockquote>
+    <select id="nd_portlog-reason" class="input-block-level" name="reason">
+      [% FOREACH pair IN settings.port_control_reasons.pairs %]
+        <option[% ' selected="selected"' IF pair.key == 'other' %] value="[% pair.key | html_entity %]">
+          [% pair.value | html_entity %]</option>
+      [% END %]
+    </select>
     <textarea id="nd_portlog-log" class="input-block-level" rows="2" name="log"
       placeholder="Enter a log message"></textarea>
   </div>