Ericsson SPR1100 Operations Instructions Page 186

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Stream Processing and Networking
6.4.3 Same Network Mode
In a Same Network Mode (also known as a Same Subnet Mode), both interfaces are
connected into the same network segments and must be isolated at the L2 level. In
this mode, every multicast uses a common virtual IP address for both interfaces.
Both interfaces use the same subnet mask and gateway IP address.
Figure 6.5 Interface Addressing - Same Network Mode
The Internet Group Management Protocol (IGMP) join is made using the physical
interface.
Note: Redundant pairs of control interfaces only support same network mode and
active/standby mode.
6.4.4 Different Network Mode
In Different Network mode, each multicast output must have a different virtual IP
address on the Ge 3 and Ge 4 interfaces. The interfaces must be configured with IP
addresses that are in different subnets (see the section Services >Properties >
Transport Stream in Chapter 5, Web GUI Control). The subnets used for the
primary and secondary network must not overlap, i.e. one must not be a superset of
the other.
6.4.5 Active/Active Port Mode
An Active/Active Port Mode can be applied to both input and output data interfaces.
In this mode, both interfaces are either transmitting or receiving simultaneously.
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