--- a/cisco.grammar	Wed Dec 02 22:19:55 2009 +0100
+++ b/cisco.grammar	Thu Dec 03 00:21:10 2009 +0100
@@ -199,6 +199,7 @@
 		| "switchport" "trunk" "encapsulation" keyword
 		{ $arg{ctx}->{"trunk-encap"} = $item{keyword} }
 		| "switchport" "trunk" "allowed" "vlan" vlan_range[ctx => $arg{ctx}, key => "vlan"]
+		| "switchport" "trunk" "allowed" "vlan" "add" vlan_range[ctx => $arg{ctx}, key => "vlan"]
 		| "channel-group" num "mode" keyword
 		{ $arg{ctx}->{"channel-group"}->{$item{num}}->{mode} = $item{keyword} }
 		| "ip" "vrf" "forwarding" word