diff --git a/README.md b/README.md
index 444224c..aa9b802 100644
--- a/README.md
+++ b/README.md
@@ -20,4 +20,8 @@
 16. 端口隔离
 17. DHCP
 
-### 第二阶段
\ No newline at end of file
+### 第二阶段
+
+1. VRRP
+2. BFD
+3. AC
\ No newline at end of file