Ultra Messaging® Configuration Guide
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4.18. Multicast Immediate Messaging Reliability Options

For every MIM reliability option, there is a corresponding LBT-RM reliability option. For more information on how MIM reliability options interact and for illustrations, please see the introduction to the transport LBT-RM reliability options section.

See also Multicast Immediate Messaging for more information about this feature.

4.18.1. mim_ignore_interval (context)

For multicast immediate message senders only. See transport_lbtrm_ignore_interval for description.

Scope:	context
Type:	lbm_ulong_t
Units:	milliseconds
Default value:	500 (0.5 seconds)
When to Set:	Can only be set during object initialization.

4.18.2. mim_nak_backoff_interval (context)

For multicast immediate message receivers only. See transport_lbtrm_nak_backoff_interval for description.

Scope:	context
Type:	lbm_ulong_t
Units:	milliseconds
Default value:	200 (0.2 seconds)
When to Set:	Can only be set during object initialization.

4.18.3. mim_nak_generation_interval (context)

For multicast immediate message receivers only. See transport_lbtrm_nak_generation_interval for description.

Scope:	context
Type:	lbm_ulong_t
Units:	milliseconds
Default value:	10000 (10 seconds)
When to Set:	Can only be set during object initialization.

4.18.4. mim_nak_initial_backoff_interval (context)

For multicast immediate message receivers only. See transport_lbtrm_nak_initial_backoff_interval for description.

Scope:	context
Type:	lbm_ulong_t
Units:	milliseconds
Default value:	50 (0.05 seconds)
When to Set:	Can only be set during object initialization.
Version:	This option was implemented in LBM 3.4/UME 2.1.

4.18.5. mim_nak_suppress_interval (context)

For multicast immediate message receivers only. See transport_lbtrm_nak_suppress_interval for description.

Scope:	context
Type:	lbm_ulong_t
Units:	milliseconds
Default value:	1000 (1 second)
When to Set:	Can only be set during object initialization.

4.18.6. mim_send_naks (context)

For multicast immediate message receivers only. See transport_lbtrm_send_naks for description.

Scope:	context
Type:	int
When to Set:	Can only be set during object initialization.

Value	Description
1	NAKs are sent for missing packets to request retransmission. Default for all.
0	Do not send NAKs for missing packets.

4.18.7. mim_transmission_window_limit (context)

For multicast immediate message senders only. See transport_lbtrm_transmission_window_limit for description.

Scope:	context
Type:	size_t
Units:	bytes
Default value:	0 (zero)
When to Set:	Can only be set during object initialization.

4.18.8. mim_transmission_window_size (context)

For multicast immediate message senders only. See transport_lbtrm_transmission_window_size for description.

Scope:	context
Type:	size_t
Units:	bytes
Default value:	25165824 (24 MB)
When to Set:	Can only be set during object initialization.

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