diff --git a/metropolis/node/ports.go b/metropolis/node/ports.go
index 05cbd9e..e7adfb7 100644
--- a/metropolis/node/ports.go
+++ b/metropolis/node/ports.go
@@ -16,6 +16,8 @@
 
 package node
 
+import "strconv"
+
 // Port is a TCP and/or UDP port number reserved for and used by Metropolis
 // node code.
 type Port uint16
@@ -57,3 +59,7 @@
 	}
 	return "unknown"
 }
+
+func (p Port) PortString() string {
+	return strconv.Itoa(int(p))
+}