diff --git a/bsp/lm3s/project_lwip_dfs.Opt b/bsp/lm3s/project_lwip_dfs.Opt
index 3d25594d9c..f468d6e9ca 100644
--- a/bsp/lm3s/project_lwip_dfs.Opt
+++ b/bsp/lm3s/project_lwip_dfs.Opt
@@ -17,13 +17,12 @@ GRPOPT 3,(finsh),0,0,0
 GRPOPT 4,(LM3S),0,0,0
 GRPOPT 5,(driverlib),0,0,0
 GRPOPT 6,(Filesystem),0,0,0
-GRPOPT 7,(LwIP),1,0,0
-GRPOPT 8,(Utils),1,0,0
+GRPOPT 7,(LwIP),0,0,0
 
 OPTFFF 1,1,1,0,0,1,1,0,<.\application.c><application.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,88,0,0,0,116,0,0,0,236,2,0,0,123,1,0,0 }
 OPTFFF 1,2,1,486539264,0,63,63,0,<.\board.c><board.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,44,0,0,0,58,0,0,0,183,2,0,0,100,1,0,0 }
 OPTFFF 1,3,1,0,0,130,135,0,<.\startup.c><startup.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,22,0,0,0,29,0,0,0,161,2,0,0,71,1,0,0 }
-OPTFFF 1,4,5,469762048,0,115,128,0,<.\rtconfig.h><rtconfig.h> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,0,0,0,0,0,0,0,0,139,2,0,0,42,1,0,0 }
+OPTFFF 1,4,5,1291845632,0,100,114,0,<.\rtconfig.h><rtconfig.h> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,0,0,0,0,0,0,0,0,139,2,0,0,42,1,0,0 }
 OPTFFF 1,5,1,922746880,0,0,0,0,<.\sdcard.c><sdcard.c> 
 OPTFFF 1,6,1,1006632960,0,1,1,0,<.\luminaryif.c><luminaryif.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,66,0,0,0,87,0,0,0,205,2,0,0,129,1,0,0 }
 OPTFFF 1,7,5,0,0,0,0,0,<.\board.h><board.h> 
@@ -115,21 +114,13 @@ OPTFFF 7,92,1,0,0,0,0,0,<..\..\net\lwip\src\arch\sys_arch_init.c><sys_arch_init.
 OPTFFF 7,93,1,0,0,0,0,0,<..\..\net\lwip\src\arch\sys_arch.c><sys_arch.c> 
 OPTFFF 7,94,1,0,0,0,0,0,<..\..\net\lwip\src\api\sockets.c><sockets.c> 
 OPTFFF 7,95,1,0,0,0,0,0,<..\..\net\lwip\src\core\memp_tiny.c><memp_tiny.c> 
-OPTFFF 8,96,1,0,0,0,0,0,<..\..\net\apps\chargen.c><chargen.c> 
-OPTFFF 8,97,1,671088640,0,1,14,0,<..\..\net\apps\ftpd.c><ftpd.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,44,0,0,0,58,0,0,0,183,2,0,0,100,1,0,0 }
-OPTFFF 8,98,1,0,0,0,0,0,<..\..\net\apps\sntp.c><sntp.c> 
-OPTFFF 8,99,1,0,0,46,46,0,<..\..\net\apps\tcpecho.c><tcpecho.c> { 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,66,0,0,0,87,0,0,0,205,2,0,0,129,1,0,0 }
-OPTFFF 8,100,1,486539264,0,0,0,0,<..\..\net\apps\tftp.c><tftp.c> 
-OPTFFF 8,101,1,0,0,0,0,0,<..\..\net\apps\udpecho.c><udpecho.c> 
-OPTFFF 8,102,1,0,0,0,0,0,<..\..\net\apps\tcpclient.c><tcpclient.c> 
-OPTFFF 8,103,1,0,0,0,0,0,<..\..\net\apps\tcpserver.c><tcpserver.c> 
-OPTFFF 8,104,1,0,0,0,0,0,<..\..\net\apps\udpclient.c><udpclient.c> 
-OPTFFF 8,105,1,0,0,0,0,0,<..\..\net\apps\udpserver.c><udpserver.c> 
-OPTFFF 8,106,1,369098754,0,1,16,0,<..\..\net\apps\netio.c><netio.c> { 44,0,0,0,2,0,0,0,3,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,44,0,0,0,58,0,0,0,183,2,0,0,100,1,0,0 }
 
+ExtF <E:\SVN-Google-Source\net\apps\ftpd.c> 1,14,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,44,0,0,0,58,0,0,0,183,2,0,0,100,1,0,0 }
+ExtF <E:\SVN-Google-Source\net\apps\tcpecho.c> 46,46,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,66,0,0,0,87,0,0,0,205,2,0,0,129,1,0,0 }
+ExtF <E:\SVN-Google-Source\net\apps\netio.c> 348,348,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,44,0,0,0,58,0,0,0,183,2,0,0,100,1,0,0 }
 ExtF <E:\SVN-Google-Source\net\apps\ping.c> 153,153,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,88,0,0,0,116,0,0,0,227,2,0,0,158,1,0,0 }
 ExtF <E:\SVN-Google-Source\src\kservice.h> 80,84,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,22,0,0,0,29,0,0,0,170,2,0,0,36,1,0,0 }
-ExtF <E:\SVN-Google-Source\net\lwip\src\lwipopts.h> 13,13,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,0,0,0,0,0,0,0,0,139,2,0,0,42,1,0,0 }
+ExtF <E:\SVN-Google-Source\net\lwip\src\lwipopts.h> 1,9,0,{ 44,0,0,0,0,0,0,0,1,0,0,0,255,255,255,255,255,255,255,255,252,255,255,255,226,255,255,255,0,0,0,0,0,0,0,0,139,2,0,0,42,1,0,0 }
 
 TARGOPT 1, (RT-Thread/LM3S)
  ADSCLK=6000000
diff --git a/bsp/lm3s/project_lwip_dfs.Uv2 b/bsp/lm3s/project_lwip_dfs.Uv2
index 2fc50ee93e..a2552e35a0 100644
--- a/bsp/lm3s/project_lwip_dfs.Uv2
+++ b/bsp/lm3s/project_lwip_dfs.Uv2
@@ -10,7 +10,6 @@ Group (LM3S)
 Group (driverlib)
 Group (Filesystem)
 Group (LwIP)
-Group (Utils)
 
 File 1,1,<.\application.c><application.c>
 File 1,1,<.\board.c><board.c>
@@ -107,17 +106,6 @@ File 7,1,<..\..\net\lwip\src\arch\sys_arch_init.c><sys_arch_init.c>
 File 7,1,<..\..\net\lwip\src\arch\sys_arch.c><sys_arch.c>
 File 7,1,<..\..\net\lwip\src\api\sockets.c><sockets.c>
 File 7,1,<..\..\net\lwip\src\core\memp_tiny.c><memp_tiny.c>
-File 8,1,<..\..\net\apps\chargen.c><chargen.c>
-File 8,1,<..\..\net\apps\ftpd.c><ftpd.c>
-File 8,1,<..\..\net\apps\sntp.c><sntp.c>
-File 8,1,<..\..\net\apps\tcpecho.c><tcpecho.c>
-File 8,1,<..\..\net\apps\tftp.c><tftp.c>
-File 8,1,<..\..\net\apps\udpecho.c><udpecho.c>
-File 8,1,<..\..\net\apps\tcpclient.c><tcpclient.c>
-File 8,1,<..\..\net\apps\tcpserver.c><tcpserver.c>
-File 8,1,<..\..\net\apps\udpclient.c><udpclient.c>
-File 8,1,<..\..\net\apps\udpserver.c><udpserver.c>
-File 8,1,<..\..\net\apps\netio.c><netio.c>
 
 
 Options 1,0,0  // Target 'RT-Thread/LM3S'
diff --git a/bsp/lm3s/rtconfig.h b/bsp/lm3s/rtconfig.h
index 416b704e71..0c343dc91a 100644
--- a/bsp/lm3s/rtconfig.h
+++ b/bsp/lm3s/rtconfig.h
@@ -95,7 +95,9 @@
 #define RT_USING_LWIP
 
 /* Trace LwIP protocol*/
-/* #define RT_LWIP_DEBUG */
+/* #define RT_LWIP_DEBUG */
+
+#define RT_LWIP_USING_RT_MEM
 
 /* Enable ICMP protocol*/
 #define RT_LWIP_ICMP
@@ -118,7 +120,7 @@
 /* TCP sender buffer space*/
 #define RT_LWIP_TCP_SND_BUF	1024*8
 /* Enable SNMP protocol*/
-/* #define RT_LWIP_SNMP */
+#define RT_LWIP_SNMP
 
 /* Using DHCP*/
 /* #define RT_LWIP_DHCP */