diff --git a/spring-session/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java b/spring-session/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
index e392a68..f2f8839 100644
--- a/spring-session/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
+++ b/spring-session/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
@@ -226,8 +226,11 @@ public class DefaultCookieSerializer implements CookieSerializer {
 	 * <p>
 	 * Used to identify which JVM to route to for session affinity. With some
 	 * implementations (i.e. Redis) this provides no performance benefit.
-	 * However, this can help with tracing logs of a particular user.
+	 * However, this can help with tracing logs of a particular user. This will ensure that the value of the cookie is formatted as
 	 * </p>
+	 * <code>
+	 * sessionId + "." jvmRoute
+	 * </code>
 	 * <p>
 	 * To use set a custom route on each JVM instance and setup a frontend proxy
 	 * to forward all requests to the JVM based on the route.
@@ -237,7 +240,7 @@ public class DefaultCookieSerializer implements CookieSerializer {
 	 *            the JVM Route to use (i.e. "node01jvmA", "n01ja", etc)
 	 */
 	public void setJvmRoute(String jvmRoute) {
-		this.jvmRoute = jvmRoute;
+		this.jvmRoute = "." + jvmRoute;
 	}
 
 	private String getDomainName(HttpServletRequest request) {
diff --git a/spring-session/src/test/java/org/springframework/session/web/http/DefaultCookieSerializerTests.java b/spring-session/src/test/java/org/springframework/session/web/http/DefaultCookieSerializerTests.java
index 87e0559..be29c13 100644
--- a/spring-session/src/test/java/org/springframework/session/web/http/DefaultCookieSerializerTests.java
+++ b/spring-session/src/test/java/org/springframework/session/web/http/DefaultCookieSerializerTests.java
@@ -328,14 +328,14 @@ public class DefaultCookieSerializerTests {
 
 		serializer.writeCookieValue(cookieValue(sessionId));
 
-		assertThat(getCookie().getValue()).isEqualTo(sessionId + jvmRoute);
+		assertThat(getCookie().getValue()).isEqualTo(sessionId + "." + jvmRoute);
 	}
 
 	@Test
 	public void readCookieJvmRoute() {
 		String jvmRoute = "route";
 		serializer.setJvmRoute(jvmRoute);
-		request.setCookies(new Cookie(cookieName, sessionId + jvmRoute));
+		request.setCookies(new Cookie(cookieName, sessionId + "." + jvmRoute));
 
 		assertThat(serializer.readCookieValues(request)).containsOnly(sessionId);
 	}
@@ -353,7 +353,7 @@ public class DefaultCookieSerializerTests {
 	public void readCookieJvmRouteOnlyRoute() {
 		String jvmRoute = "route";
 		serializer.setJvmRoute(jvmRoute);
-		request.setCookies(new Cookie(cookieName, jvmRoute));
+		request.setCookies(new Cookie(cookieName, "." + jvmRoute));
 
 		assertThat(serializer.readCookieValues(request)).containsOnly("");
 	}