diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..5a82b33
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "protocol"]
+	path = protocol
+	url = zwsd@192.168.1.3:p_graphite_digester_v2/graphite_digester_protocol.git
diff --git a/protocol b/protocol
new file mode 160000
index 0000000..cbe06f5
--- /dev/null
+++ b/protocol
@@ -0,0 +1 @@
+Subproject commit cbe06f5e46d9399b17c8d87ce450f9f346960c8f