@@ -599,6 +599,15 @@ function create_disk {

     fi

 }

+

+# set_mtu - Set MTU on a device

+function set_mtu {

+    local dev=$1

+    local mtu=$2

+    sudo ip link set mtu $mtu dev $dev

+}

+

+

 # Restore xtrace

 $XTRACE

@@ -171,6 +171,7 @@ PROVIDER_SUBNET_NAME=${PROVIDER_SUBNET_NAME:-"provider_net"}

 # Define the public bridge that will transmit traffic from VMs to the

 # physical network - used by both the OVS and Linux Bridge drivers.

 PUBLIC_BRIDGE=${PUBLIC_BRIDGE:-br-ex}

+PUBLIC_BRIDGE_MTU=${PUBLIC_BRIDGE_MTU:-1500}

 # Use flat providernet for public network

 #

@@ -48,6 +48,7 @@ function neutron_plugin_configure_dhcp_agent {

 function neutron_plugin_configure_l3_agent {

     sudo brctl addbr $PUBLIC_BRIDGE

+    set_mtu $PUBLIC_BRIDGE $PUBLIC_BRIDGE_MTU

     iniset $Q_L3_CONF_FILE DEFAULT external_network_bridge

     iniset $Q_L3_CONF_FILE DEFAULT l3_agent_manager neutron.agent.l3_agent.L3NATAgentWithStateReport

 }

@@ -102,11 +102,16 @@ function _neutron_ovs_base_configure_l3_agent {

         sudo ip link set $Q_PUBLIC_VETH_EX up

         sudo ip addr flush dev $Q_PUBLIC_VETH_EX

     else

-        _neutron_ovs_base_add_bridge $PUBLIC_BRIDGE

+        _neutron_ovs_base_add_public_bridge

         sudo ovs-vsctl br-set-external-id $PUBLIC_BRIDGE bridge-id $PUBLIC_BRIDGE

     fi

 }

+function _neutron_ovs_base_add_public_bridge {

+    _neutron_ovs_base_add_bridge $PUBLIC_BRIDGE

+    set_mtu $PUBLIC_BRIDGE $PUBLIC_BRIDGE_MTU

+}

+

 function _neutron_ovs_base_configure_nova_vif_driver {

     :

 }