Option 184 Supporting Configuration; Introduction To Option 184 - H3C S3600 Series Operation Manual

Operation Manual – DHCP
H3C S3600 Series Ethernet Switches-Release 1510
Note:
To enable option 82 normally, you need to perform corresponding configuration on both
the DHCP server and the DHCP relay. For the configuration of the DHCP relay, see
section 3.1.3 "Option 82 Supporting".

2.6 Option 184 Supporting Configuration

2.6.1 Introduction to Option 184

Option 184 is an RFC reserved option, and the information it carries can be customized.
H3C defines four proprietary sub-options for this option, enabling the DHCP server to
put the information required by a DHCP client in the response packet to the client.
I. Basic concept
The four sub-options of option 184 mainly carry information about voice. The following
lists the sub-options and the carried information:
option: An option in a DHCP message. This option may be a field in variable length.
Option contains some lease information and message types. The option field
contains at least one and up to 255 options.
Sub-option 1: IP address of the network call processor (NCP-IP).
Sub-option 2: IP address of the alternate server (AS-IP).
Sub-option 3: Voice VLAN configuration.
Sub-option 4: Fail-over call routing.
II. Meanings of the sub-options for option 184
Table 2-23 Meanings of the sub-options for option 184
Sub-option
NCP-IP
(sub-option 1)
Feature
The IP address of
the
carried
sub-option
The NCP-IP option
sub-option carries intended
the IP address of identifying
the network call server serving as
processor (NCP). the
controller and the
server
application
downloading.
2-23
Chapter 2 DHCP Server Configuration
Function
NCP server
by
1 of
184 is When used in option
for 184, this sub-option
the must
sub-option, that is,
network call sub-option 1
used for
Note
be the first