The DHCP server listens on all interfaces and leases persist over reboots. It
responds to remote unicast DHCP relay agents, with one of the routers or switches in the LAN
network.
Where Can I Use
This?
What Do I
Need?
Prisma SD-WAN
Prisma SD-WAN license
Prisma SD-WAN supports custom options for DHCP servers. These options can be defined
in each configuration instance and are for client consumption.
Select WorkflowsSites. Select a site for which you want to configure a DHCP
server.
On the Site Configuration tab, select
Configure DHCP Scopes. Click Add DHCP
Server to add the server details.
Optional For Custom Options, Add
Custom Options like Vendor Class ID,
Definition, and Value.
For custom options use the following format: Vendor Class Identifier (VCI)
(Optional): <vci-name-string>, Definition: Uses the format
option <title> code <number> =<datatypes>, and Value:
Uses option <title> <value>.
The Vendor Class ID is an optional parameter.
Custom options can be configured:
With VCI
Without VCI
Special case- PXE Boot
Custom options with VCI
Vendor class identifier :
CGNXClient
Definition : option url code 5 = text;
Value : option url “https://cloudgenix.com”
To configure/send multiple options with the same VCI, we
need to add multiple entries of VCI or use encapsulated options.
Vendor class identifier : CGNXClient
Definition : option url code 5 = text;
Value : option url “https://cloudgenix.com”
Definition : option name code 1 = text;
Value : option name “Cloudgenix”
Custom options without VCI
You can send a request
without u every request (not specific to VCI) if we want to return a custom
option we need to add only Definition and Value.
Please refer to data
types supported in custom option:
Configuring Option 150: TFP server
Configuring option 42: NTP server
Configuring option 60
Configuring option 43 (without VCI )
Custom Option Special Case: PXE boot
Option 67: Configure Boot
filename
Vendor class identifier : PXEClient
Definition : filename
Value : pxelinux.0
Option 66: Configure TFTP Server/Next-Server
Vendor class
identifier : PXEClient
Definition : nextserver
Value : 10.100.0.1
DHCP Client Option
Prisma SD-WAN supports client options for DHCP servers. These options can be
defined in each configuration instance and are for client consumption.
Vendor Class Identifier (Option 60): The ION devices on version
5.2.1 and later support Vendor Class Identifier (VCI) or option 60 for a
DHCP Server. A DHCP client sends an option code 60 (VCI) in its
communication to the DHCP server. On receiving option 60 or VCI, the DHCP
server matches the received VCI with a VCI Configured. If VCI matches then
returns a value corresponding to the VCI to the DHCP client.
Vendor Un-encapsulated option: When we want to send data as it is
under option 43 use keyword in option <title>:
“vendor-encapsulated-options”
Vendor Class ID : PANAP
Definition: option vendor-encapsulated-options code 1 = text
Here Prisma SD-WAN ignores the value of the code ( 1 in the above case ),
hence you can enter any value for the code.
Vendor Encapsulated Options: When we want to send multiple data
(data : code, len, data ) encapsulated under option 43 Option 43: <
data-1> <data-2> Example:
Vendor Class ID : CGNXClient
Definition: option value code 1 = integer 8
Value: option value 121
Vendor Class ID : CGNXClient
Definition: option url code 3 = text
Value: option url “www.google.com”
Vendor Class Identifier: When we want to return vendor Class
Identifier ( option 60) with each DHCP response - use keyword in option
<title> : “vendor-class-identifier”
