T4389: extend DHCP server documentation on vendor options (#1339)

* T4389 added to dhcp-server documentation

* Correction IP address specifed in examples in previous PR

1 files changed, 36 insertions, 2 deletions

diff --git a/docs/configuration/service/dhcp-server.rst b/docs/configuration/service/dhcp-server.rst
index 6813d2c0..43b5d20c 100644
--- a/docs/configuration/service/dhcp-server.rst
+++ b/docs/configuration/service/dhcp-server.rst
@@ -49,10 +49,26 @@ Configuration
    Inform client that the DNS server can be found at `<address>`.
 
    This is the configuration parameter for the entire shared network definition.
-   All subnets will inherit this configuration item if not specified locally.
-
+   All subnets will inherit this configuration item if not specified locally. 
    Multiple DNS servers can be defined.
 
+.. cfgcmd:: set service dhcp-server shared-network-name <name> option 
+   vendor-option <option-name>
+
+   This configuration parameter lets you specify a vendor-option for the 
+   entire shared network definition. All subnets will inherit this 
+   configuration item if not specified locally. An example for Ubiquiti is 
+   shown below:
+
+**Example:**
+
+Pass address of Unifi controller at ``172.16.100.1`` to all clients of ``NET1``
+
+.. code-block:: none
+
+  set service dhcp-server shared-network-name 'NET1' option vendor-option  
+  ubiquiti '172.16.100.1'
+
 .. cfgcmd:: set service dhcp-server listen-address <address>
 
    This configuration parameter lets the DHCP server to listen for DHCP 
@@ -132,6 +148,24 @@ Individual Client Subnet
    request where no full FQDN is passed. This option can be given multiple times
    if you need multiple search domains (DHCP Option 119).
 
+.. cfgcmd:: set service dhcp-server shared-network-name <name> subnet <subnet> 
+   option vendor-option <option-name>
+
+   This configuration parameter lets you specify a vendor-option for the
+   subnet specified within the shared network definition. An example for  
+   Ubiquiti is shown below:
+
+**Example:**
+
+Create ``172.18.201.0/24`` as a subnet within ``NET1`` and pass address of  
+Unifi controller at ``172.16.100.1`` to clients of that subnet.
+
+.. code-block:: none
+
+  set service dhcp-server shared-network-name 'NET1' subnet 
+  '172.18.201.0/24' option vendor-option ubiquiti '172.16.100.1'
+
+
 Failover
 --------