Huawei Quidway S3900 Series Operation Manual page 607

Operation Manual - DHCP
Quidway S3900 Series Ethernet Switches-Release 1510
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.
Huawei Technologies Proprietary
2-26
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