Implementation of forward secrecy in LTM

isn't it to choose cipher supporting pfs?

e.g.

[root@ve11a:Active:In Sync] config  tmm --clientciphers ECDHE
       ID  SUITE                            BITS PROT    METHOD  CIPHER  MAC     KEYX
 0: 49200  ECDHE-RSA-AES256-GCM-SHA384      256  TLS1.2  Native  AES-GCM  SHA384  ECDHE_RSA
 1: 49192  ECDHE-RSA-AES256-SHA384          256  TLS1.2  Native  AES     SHA384  ECDHE_RSA
 2: 49172  ECDHE-RSA-AES256-CBC-SHA         256  TLS1    Native  AES     SHA     ECDHE_RSA
 3: 49172  ECDHE-RSA-AES256-CBC-SHA         256  TLS1.1  Native  AES     SHA     ECDHE_RSA
 4: 49172  ECDHE-RSA-AES256-CBC-SHA         256  TLS1.2  Native  AES     SHA     ECDHE_RSA
 5: 49170  ECDHE-RSA-DES-CBC3-SHA           192  TLS1    Native  DES     SHA     ECDHE_RSA
 6: 49170  ECDHE-RSA-DES-CBC3-SHA           192  TLS1.1  Native  DES     SHA     ECDHE_RSA
 7: 49170  ECDHE-RSA-DES-CBC3-SHA           192  TLS1.2  Native  DES     SHA     ECDHE_RSA
 8: 49199  ECDHE-RSA-AES128-GCM-SHA256      128  TLS1.2  Native  AES-GCM  SHA256  ECDHE_RSA
 9: 49191  ECDHE-RSA-AES128-SHA256          128  TLS1.2  Native  AES     SHA256  ECDHE_RSA
10: 49171  ECDHE-RSA-AES128-CBC-SHA         128  TLS1    Native  AES     SHA     ECDHE_RSA
11: 49171  ECDHE-RSA-AES128-CBC-SHA         128  TLS1.1  Native  AES     SHA     ECDHE_RSA
12: 49171  ECDHE-RSA-AES128-CBC-SHA         128  TLS1.2  Native  AES     SHA     ECDHE_RSA