Chapter 1 System Overview and Requirements
© 2017 Harmonic Inc. All rights reserved. 25 Harmonic MediaGrid Release 4.1
Network Configuration
Network Diagram with 10 GbE Network
The network topology diagram in Figure 1–3 shows a basic network configuration using the
ContentServer 4000, or the ContentServer 3000 with 10 GbE NIC cards.
In Figure 1–3, note the following:
Private VLAN 1 is a dedicated VLAN defined on the 1 GbE switch shown on the left. Private
VLAN 2 is a dedicated VLAN defined on the 1 GbE switch shown on the right. The
ContentDirectors must communicate on both private VLANs.
To allow failover, the Public VLAN indicated with the blue cables must also be connected to
the switch or module from the Public VLAN indicated with the gray cables. The separate
colors indicate failover configuration only; in reality these are the same VLAN.
The BMC connection indicated by turquoise cables is used for a troubleshooting utility called
the Baseboard Management Console (BMC). This requires a 1 GbE connection from each
controller on a ContentServer to the 1 GbE switch. The BMC cables should be connected to
the Public VLAN.
ContentStores are connected to a ContentServer via SAS cables.
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