Media5 Mediatrix 4104, Reference Manual, Page: 168 / 466

Chapter 8 - IP Address and Network Configuration Services
146 Mediatrix 4104
Static DNS
By default, the Mediatrix 4104 receives DNS IP addresses according to the configuration source you have
defined in the
localHostSelectConfigSource variable. In general, these addresses are provided by an ISP
(Internet Service Provider) via DHCP.
However, you can set static values for the primary and secondary DNS IP addresses, even when the Mediatrix
4104 is set by DHCP. These static values can thus override DHCP provisioning
The Mediatrix 4104 may receive DNS addresses from two sources:

from an ISP via DHCP

from the static local host DNS IP addresses
Table 82 explains how DNS addresses are attributed to the Mediatrix 4104.

To use static DNS IP addresses:
1. In the ipAddressConfig folder, set the localHostDnsOverrideEnable variable (under the
ipAdressConfigLocalHost group) to enable .
The primary DNS and secondary DNS addresses are set with the static values defined in the
localHostStaticPrimaryDns and localHostStaticSecondaryDns variables.
2. Restart the Mediatrix 4104 so that the changes may take effect.
Image
The ipAddressConfigImage group provides the configuration necessary to download applications into the
Mediatrix 4104. This includes emergency downloads in case of repetitive failure to start the main application.

To select the Image configuration source:
1. In the ipAddressConfig folder, locate the imageSelectConfigSource variable (under the
ipAddressConfigImage group).
2. Set this variable to either static or dhcp (vendor/site specific option).
Table 82: DNS Addresses Possibilities
Configuration Source localHostDns OverrideEnable DNS address of Mediatrix 4104
DHCP disabled DHCP DNS
DHCP enabled static local host DNS
In the Unit Manager Network Administration Manual , refer to chapter Administration Parameters , section
Software and Emergency Download .
Table 83: Image Information Source
Variable Default Static Value DHCP Source
imagePrimaryHost “192.168.0.10” Use option specified in variable
imageDhcpPrimarySiteSpecificCode , bytes 0-
3.
If not specified (0), use option 43, sub-option
117, bytes 0-3.
imagePrimaryPort 69
a
Use option specified in variable
imageDhcpPrimarySiteSpecificCode , bytes 4-
5.
If not specified (0), use option 43, sub-option
117, bytes 4-5. If bytes 4-5 are not present, use
the default static value.