diff --git a/cluster/network.go b/cluster/network.go
index 5630ce3f..a6c1754f 100644
--- a/cluster/network.go
+++ b/cluster/network.go
@@ -105,6 +105,7 @@ const (
 	FlannelBackend   = "FlannelBackend"
 	CanalInterface   = "CanalInterface"
 	WeavePassword    = "WeavePassword"
+	MTU              = "MTU"
 	RBACConfig       = "RBACConfig"
 	ClusterVersion   = "ClusterVersion"
 
@@ -194,6 +195,7 @@ func (c *Cluster) doCalicoDeploy(ctx context.Context, data map[string]interface{
 		FlexVolImg:       c.SystemImages.CalicoFlexVol,
 		RBACConfig:       c.Authorization.Mode,
 		NodeSelector:     c.Network.NodeSelector,
+		MTU:              c.Network.MTU,
 	}
 	pluginYaml, err := c.getNetworkPluginManifest(calicoConfig, data)
 	if err != nil {
@@ -232,6 +234,7 @@ func (c *Cluster) doCanalDeploy(ctx context.Context, data map[string]interface{}
 			"Port": flannelPort,
 		},
 		NodeSelector: c.Network.NodeSelector,
+		MTU:          c.Network.MTU,
 	}
 	pluginYaml, err := c.getNetworkPluginManifest(canalConfig, data)
 	if err != nil {
@@ -249,6 +252,7 @@ func (c *Cluster) doWeaveDeploy(ctx context.Context, data map[string]interface{}
 		WeaveLoopbackImage: c.SystemImages.Alpine,
 		RBACConfig:         c.Authorization.Mode,
 		NodeSelector:       c.Network.NodeSelector,
+		MTU:                c.Network.MTU,
 	}
 	pluginYaml, err := c.getNetworkPluginManifest(weaveConfig, data)
 	if err != nil {
diff --git a/cluster/validation.go b/cluster/validation.go
index 4b022735..73b68439 100644
--- a/cluster/validation.go
+++ b/cluster/validation.go
@@ -70,6 +70,9 @@ func validateNetworkOptions(c *Cluster) error {
 	if c.Network.Plugin != NoNetworkPlugin && c.Network.Plugin != FlannelNetworkPlugin && c.Network.Plugin != CalicoNetworkPlugin && c.Network.Plugin != CanalNetworkPlugin && c.Network.Plugin != WeaveNetworkPlugin {
 		return fmt.Errorf("Network plugin [%s] is not supported", c.Network.Plugin)
 	}
+	if c.Network.Plugin == FlannelNetworkPlugin && c.Network.MTU != "" {
+		return fmt.Errorf("Network plugin [%s] does not support configuring MTU", FlannelNetworkPlugin)
+	}
 	return nil
 }