Manual Routing Ts Redundancy; Hot/Hot And Hot/Warm - Motorola APEX1000 Installation And Operation Manual

Manual Routing TS Redundancy

There are two different redundancy selections methods for determining transport stream
failover: Hot/Hot and Hot/Warm.

Hot/Hot and Hot/Warm

This setting is configurable on the
•
Hot/Hot is typically expected to be used for Manual Routed input streams. Hot/Hot
means that a primary and secondary input stream are both opened at the same time.
This indicates that the APEX is receiving twice the amount of input data as it is
processing (primary is received and processed, secondary is received, counted, then
discarded). The APEX monitors and compares the primary to the secondary using the
user-configured threshold, compare type, and monitor period. A failover to the
secondary occurs when the primary drops below the secondary based on the these
settings. A fallback to the primary occurs using the same comparison algorithm but
also takes into account the hold value.
•
Hot/Warm mimics the Hot/Warm scheme employed for SDV sessions. Hot/Warm
means that only one of the redundant input streams is opened at any one time.
Either the primary or secondary input stream is received, but not both. This reduces
the overall amount of input data the APEX is receiving. For this redundancy type, the
APEX uses the unicast or multicast timeout values to determine when to failover. A
failover occurs when the Primary input stream is determined to be missing for the
unicast or multicast timeout period.
There is no direct comparison to the secondary input, as the primary is opened and used
until a failover occurs. This means that the failover is performed before the condition of
the secondary input stream is known. When a failover to a secondary occurs, there is no
automatic fallback. To fallback to the primary, you must force the secondary to fallback to
the primary.
Manual Routing • Manual Routing TS Redundancy
APEX1000 All-Purpose Edge QAM Software Version 2.4.x • Installation and Operation Manual
573408-001-a
Input Stream Redundancy screen:
B
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