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Application startup, Dhcp client, 4 application startup – AASTRA SIP-DECT (Release 2.1)- OM System Manual - Installation, Administration and Maintenance EN User Manual

Page 130: 1 dhcp client

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SIP – DECT OM System Manual Release 2.1

7 Configuration und Administration Aspects

depl-1230/1.3

Page: 130 (196)

7.5.4

Application Startup

After successfully downloading and starting the application the RFP checks the local network
settings in its internal flash memory once again. If no settings are available or if they are
disabled, it starts a DHCP client to determine the IP address of the OMM and other
application startup settings.

7.5.4.1 DHCP Client

The DHCP client is capable of receiving broadcast and unicast DHCP replies. Therefore the
flags field is

0x0000

. The DHCP request contains the well-known magic cookie

(0x63825363)

and the end option

(0xFF)

.

Parameters
The following parameters will be supported within this step:

Option / Field

Meaning

Mandatory

yiaddr

IP address of the IP-RFP

yes

siaddr

Parameter named “Boot Server Host Name” with value
as the IP address of the TFTP server

yes

File

Parameter named “Bootfile Name” with value of the
path (optional) and name of the application image. For
example omm_ffsip.tftp.

yes

code 1

Subnet mask

yes

code 3

Default Gateway

yes

code 6

Domain Name Server

no

code 15

Domain Name

no

code 42

IP address of a NTP server

no

code 43

Vendor Specific Options

yes

code 66

URL specifies the protocol, server and path to access
the RFP configuration files (see 7.7).

no

public option 224

Parameter named magic_str must be set to value
"OpenMobility".

yes

Vendor specific options
The Vendor Specific Options consist of:

Vendor Specific
Option

Meaning

Length

Mandatory

option 10

ommip1: Used to select the IP-RFP who
should reside the Open Mobility Manager
(OMM).

4

yes

option 14

syslogip: IP address of a Syslog Daemon

4

no

option 15

syslogport: Port of a Syslog Daemon

2

no