Add OVS configs for bird overlay

overlays/bird/ovs-config.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# OVS configuration for the `bird` overlay
+
+LAB=${LAB:=0}
+for node in 0 1 2 3; do
+  for int in 0 1 2 3; do
+    ovs-vsctl set port vpp${LAB}-${node}-${int} vlan_mode=native-untagged
+  done
+done
+
+# Uplink is VLAN 10
+ovs-vsctl add port vpp${LAB}-0-0 tag 10
+
+# Link vpp${LAB}-0 <-> vpp${LAB}-1 in VLAN 20
+ovs-vsctl add port vpp${LAB}-0-1 tag 20
+ovs-vsctl add port vpp${LAB}-1-0 tag 20
+
+# Link vpp${LAB}-1 <-> vpp${LAB}-2 in VLAN 21
+ovs-vsctl add port vpp${LAB}-1-1 tag 21
+ovs-vsctl add port vpp${LAB}-2-0 tag 21
+
+# Link vpp${LAB}-2 <-> vpp${LAB}-3 in VLAN 22
+ovs-vsctl add port vpp${LAB}-2-1 tag 22
+ovs-vsctl add port vpp${LAB}-3-0 tag 22

overlays/default/ovs-config.sh

@@ -0,0 +1 @@
+../bird/ovs-config.sh