diff --git a/manifests/compute.pp b/manifests/compute.pp
index efc37f7..cf000c1 100644
--- a/manifests/compute.pp
+++ b/manifests/compute.pp
@@ -56,6 +56,8 @@ class openstack::compute (
   $quantum_host                  = '127.0.0.1',
   $ovs_local_ip                  = false,
   $quantum_firewall_driver       = false,
+  $bridge_mappings               = undef,
+  $bridge_uplinks                = undef,
   # Nova
   $nova_admin_tenant_name        = 'services',
   $nova_admin_user               = 'nova',
@@ -222,6 +224,8 @@ class openstack::compute (
       enabled           => $enabled,
       enable_server     => false,
       verbose           => $verbose,
+      bridge_mappings   => $bridge_mappings,
+      bridge_uplinks    => $bridge_uplinks
     }
 
     class { 'nova::compute::quantum':
diff --git a/manifests/controller.pp b/manifests/controller.pp
index 346a789..ccc39af 100644
--- a/manifests/controller.pp
+++ b/manifests/controller.pp
@@ -223,9 +223,11 @@ class openstack::controller (
   $tenant_network_type     = 'gre',
   $ovs_enable_tunneling    = true,
   $ovs_local_ip            = false,
-  $network_vlan_ranges     = 'physnet1:1000:2000',
+  $network_vlan_ranges     = undef,
   $bridge_interface        = undef,
   $external_bridge_name    = 'br-ex',
+  $bridge_uplinks          = undef,
+  $bridge_mappings         = undef,
   $enable_ovs_agent        = true,
   $enable_dhcp_agent       = true,
   $enable_l3_agent         = true,
@@ -428,6 +430,18 @@ class openstack::controller (
       fail('bridge_interface must be set when configuring quantum')
     }
 
+    if ! $bridge_uplinks {
+      $bridge_uplinks_real = ["${external_bridge_name}:${bridge_interface}"]
+    } else {
+      $bridge_uplinks_real = $bridge_uplinks
+    }
+
+    if ! $bridge_mappings {
+      $bridge_mappings_real  = ["${physical_network}:${external_bridge_name}"]
+    } else {
+      $bridge_mappings_real  = $bridge_mappings
+    }
+
     class { 'openstack::quantum':
       # Database
       db_host               => $db_host,
@@ -443,8 +457,8 @@ class openstack::controller (
       network_vlan_ranges   => $network_vlan_ranges,
       ovs_enable_tunneling  => $ovs_enable_tunneling,
       ovs_local_ip          => $ovs_local_ip_real,
-      bridge_uplinks        => ["${external_bridge_name}:${bridge_interface}"],
-      bridge_mappings       => ["${physical_network}:${external_bridge_name}"],
+      bridge_uplinks        => $bridge_uplinks_real,
+      bridge_mappings       => $bridge_mappings_real,
       enable_ovs_agent      => $enable_ovs_agent,
       firewall_driver       => $firewall_driver,
       # Database
diff --git a/manifests/quantum.pp b/manifests/quantum.pp
index b016983..b93dfdc 100644
--- a/manifests/quantum.pp
+++ b/manifests/quantum.pp
@@ -164,7 +164,7 @@ class openstack::quantum (
   $enable_ovs_agent       = false,
   # OVS settings
   $tenant_network_type    = 'gre',
-  $network_vlan_ranges    = 'physnet1:1000:2000',
+  $network_vlan_ranges    = undef,
   $ovs_local_ip           = false,
   $ovs_enable_tunneling   = true,
   $bridge_uplinks         = [],
diff --git a/spec/classes/openstack_controller_spec.rb b/spec/classes/openstack_controller_spec.rb
index fc3cdfc..6faba8b 100644
--- a/spec/classes/openstack_controller_spec.rb
+++ b/spec/classes/openstack_controller_spec.rb
@@ -31,6 +31,7 @@ describe 'openstack::controller' do
       :nova_admin_tenant_name  => 'services',
       :nova_admin_user         => 'nova',
       :enabled_apis            => 'ec2,osapi_compute,metadata',
+      :physical_network        => 'default'
     }
   end
 
@@ -547,7 +548,8 @@ describe 'openstack::controller' do
           :bridge_interface       => 'eth_27',
           :internal_address       => '10.0.0.3',
           :quantum_db_password    => 'q_db_pass',
-          :metadata_shared_secret => 'secret'
+          :metadata_shared_secret => 'secret',
+          :external_bridge_name   => 'br-ex'
         })
       end
 
@@ -564,7 +566,6 @@ describe 'openstack::controller' do
           :rabbit_password       => 'rabbit_pw',
           :rabbit_virtual_host   => '/',
           :tenant_network_type   => 'gre',
-          :network_vlan_ranges   => 'physnet1:1000:2000',
           :ovs_enable_tunneling  => true,
           :ovs_local_ip          => '10.0.0.3',
           :bridge_uplinks        => ["br-ex:eth_27"],