Updated DPD and close-action values in IPSEC

Changed from 'hold' to 'trap' and from 'restart' to 'start'
in close-action.
Changed from 'hold' to 'trap' in DPD action.

(cherry picked from commit cfb7e8186d83e45092f361f9717c9542bfad053b)

3 files changed, 13 insertions, 11 deletions

diff --git a/docs/_static/images/IPSec_close_action_settings.jpg b/docs/_static/images/IPSec_close_action_settings.jpg
index 6996f857..a4e258cc 100644
--- a/docs/_static/images/IPSec_close_action_settings.jpg
+++ b/docs/_static/images/IPSec_close_action_settings.jpg
diff --git a/docs/configuration/vpn/ipsec.rst b/docs/configuration/vpn/ipsec.rst
index 31d4adc3..f0c6c723 100644
--- a/docs/configuration/vpn/ipsec.rst
+++ b/docs/configuration/vpn/ipsec.rst
@@ -49,9 +49,9 @@ VyOS IKE group has the next options:
 
  * ``none`` set action to none (default);
  
- * ``hold`` set action to hold;
+ * ``trap`` installs a trap policy for the CHILD_SA;
  
- * ``restart`` set action to restart;
+ * ``start`` tries to immediately re-create the CHILD_SA;
  
 * ``dead-peer-detection`` controls the use of the Dead Peer Detection protocol 
   (DPD, RFC 3706) where R_U_THERE notification messages (IKEv1) or empty 
@@ -60,11 +60,13 @@ VyOS IKE group has the next options:
   
  * ``action`` keep-alive failure action:
  
-  * ``hold`` set action to hold (default)
+  * ``trap``  installs a trap policy, which will catch matching traffic
+    and tries to re-negotiate the tunnel on-demand;
   
-  * ``clear`` set action to clear;
+  * ``clear`` closes the CHILD_SA and does not take further action (default);
   
-  * ``restart`` set action to restart;
+  * ``restart`` immediately tries to re-negotiate the CHILD_SA
+    under a fresh IKE_SA;
   
  * ``interval`` keep-alive interval in seconds <2-86400> (default 30);
  
diff --git a/docs/configuration/vpn/site2site_ipsec.rst b/docs/configuration/vpn/site2site_ipsec.rst
index 23df1b76..78cadfb5 100644
--- a/docs/configuration/vpn/site2site_ipsec.rst
+++ b/docs/configuration/vpn/site2site_ipsec.rst
@@ -317,7 +317,7 @@ Imagine the following topology
   set vpn ipsec esp-group ESP_DEFAULT proposal 10 encryption 'aes256gcm128'
   set vpn ipsec esp-group ESP_DEFAULT proposal 10 hash 'sha256'
   set vpn ipsec ike-group IKEv2_DEFAULT close-action 'none'
-  set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection action 'hold'
+  set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection action 'trap'
   set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection interval '30'
   set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection timeout '120'
   set vpn ipsec ike-group IKEv2_DEFAULT disable-mobike
@@ -357,7 +357,7 @@ Imagine the following topology
   set vpn ipsec esp-group ESP_DEFAULT proposal 10 encryption 'aes256gcm128'
   set vpn ipsec esp-group ESP_DEFAULT proposal 10 hash 'sha256'
   set vpn ipsec ike-group IKEv2_DEFAULT close-action 'none'
-  set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection action 'hold'
+  set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection action 'trap'
   set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection interval '30'
   set vpn ipsec ike-group IKEv2_DEFAULT dead-peer-detection timeout '120'
   set vpn ipsec ike-group IKEv2_DEFAULT disable-mobike
@@ -397,18 +397,18 @@ Key Parameters:
   routes installed in the default table 220 for site-to-site ipsec.
   It is mostly used with VTI configuration.
 
-* ``dead-peer-detection action = clear | hold | restart`` - R_U_THERE
+* ``dead-peer-detection action = clear | trap | restart`` - R_U_THERE
   notification messages(IKEv1) or empty INFORMATIONAL messages (IKEv2)
   are periodically sent in order to check the liveliness of the IPsec peer. The
-  values clear, hold, and restart all activate DPD and determine the action to
+  values clear, trap, and restart all activate DPD and determine the action to
   perform on a timeout.
   With ``clear`` the connection is closed with no further actions taken.
-  ``hold`` installs a trap policy, which will catch matching traffic and tries
+  ``trap`` installs a trap policy, which will catch matching traffic and tries
   to re-negotiate the connection on demand.
   ``restart`` will immediately trigger an attempt to re-negotiate the
   connection.
 
-* ``close-action = none | clear | hold | restart`` - defines the action to take
+* ``close-action = none | clear | trap | start`` - defines the action to take
   if the remote peer unexpectedly closes a CHILD_SA (see above for meaning of
   values). A closeaction should not be used if the peer uses reauthentication or
   uniqueids.