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Used for:
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RTgms processes only
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Type:
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Integer
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Default Value:
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1
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Valid Values:
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Any integer between 1 and 255, inclusive
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The Pgm_Source_Group_Ttl option specifies the initial time to live (TTL) for data sent by RTgms. This is one less than the maximum number of multicast routers that data sent by RTgms can travel through before reaching an RTclient.
The time to live (TTL) is automatically decremented every time the data passes through a router. The data is discarded by the router if, after it decrements the TTL, the TTL is 0. This allows data stuck in a loop between routers to eventually be eliminated. Too small a value for Pgm_Source_Group_Ttl can cause the data to be discarded too soon, before it ever reaches an RTclient. Too large a value for Pgm_Source_Group_Ttl can increase the amount of congestion caused by routing loops.
The default value of 1 only works if data does not pass through any routers to reach all RTclients. Consider the number of routers data must pass through to reach RTclients, including the number of routers to reach other networks containing RTclients, when setting the value for Pgm_Source_Group_Ttl.
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TIBCO SmartSockets™ User’s Guide Software Release 6.8, July 2006 Copyright © TIBCO Software Inc. All rights reserved www.tibco.com |