diff --git a/tools/apidoc/gen_toc.py b/tools/apidoc/gen_toc.py
index 5403adb99df..f8bdae281b2 100644
--- a/tools/apidoc/gen_toc.py
+++ b/tools/apidoc/gen_toc.py
@@ -56,6 +56,7 @@ dirname_to_dirname = {
 
 
 known_categories = {
+    'Cisco' : 'External Device',
     'SystemVm': 'System VM',
     'VirtualMachine': 'Virtual Machine',
     'VM': 'Virtual Machine',