Chapter 4 System Configuration
© 2017 Harmonic Inc. All rights reserved.
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Harmonic MediaGrid Release 4.1
Configuring a ContentBridge
[root@CLB04130 ~]#
7. On any Windows XP PC, copy ommcp.exe and ommedia.dll to the same directory.
8. Open a DOS Command prompt and type the following single command line to transfer a clip
from Spectrum (10.2.1.15) to Harmonic MediaGrid (10.3.1.100) via ContentBridge
(10.3.1.40).
ommcp -in//om-spect/fs0/clip.dir/abc.mov -out//om-cld/mg0/clip.dir/
abc.mov -host 10.3.1.40 -replace -progress
(Change IP addresses, host names, file system and clip names to match your configuration.)
9. As the transfer occurs, you will see the following transfer progress count, frame by frame, and
also the transfer speed in frames per second (fps):
0 of 15000 frames copied (0.0 fps)
5 of 15000 frames copied (1.7 fps)
76 of 15000 frames copied (19.0 fps)
138 of 15000 frames copied (27.6 fps)
191 of 15000 frames copied (31.8 fps)
Configuring a ContentBridge
Only perform these steps if you add a ContentBridge to an already-configured Harmonic
MediaGrid system.
The ContentBridge must have a fixed (static) IP address. It is recommended that you assign an IP
address from the bottom of the dynamic range and that those addresses be removed from the
range. The DHCP server must also recognize the MAC address of the ContentBridge and assign it
a reserved IP address during startup. The ContentBridge MAC address is located on the outside
of the unit.
Follow these steps to assign a static IP address to the ContentBridge. Additionally, a DNS entry
must exist in the domain server for the ContentBridge. Use the following IP address range when
assigning the addresses: xx.xx.xx.50-99.
In the following example, “CLB0F118” is the ContentBridge host name. Make sure that the
hardware Ethernet addresses match the port numbers (eth0 or eth1) and the public network
addresses.
To configure a ContentBridge:
1. Open the
/etc/dhcpd.conf
file for the primary ContentDirector by typing the following:
sudo vi /etc/dhcpd.conf
2. Add two entries for each ContentBridge, including the following information: domain-name-
servers, domain-name, subnet-mask, routers, hardware Ethernet MAC address and fixed IP
address. An entry is needed for each Ethernet port on the ContentBridge.
3. Type the following to synchronize the time between the ContentDirectors:
ntpdate -u
IP_ADDRESS
where
IP_ADDRESS
is the IP address of a valid NTP server (preferably the SystemManager).
4. Enter the following commands after editing the file:
sudo service dhcpd configtest
sudo service dhcpd restart
Examples are shown below. Your site-specific entries will be different.
# Gateway CLB0F118 eth0
host CLB0F118-eth0 {
