Equinox Systems Cirrus Manuel Page 108

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Vue de la page 107
108 ©Copyright 2006 Cirrus Logic, Inc. DS651PM25
CobraNet Programmer’s Reference
Management Interface Variable Reference
Name
txUnicastMode
Description
Specifies the number of unicast destinations served before automatically switching to multicast
bundle transmission. Multicast transmission is useful for efficient point to multipoint routing.
However, multicast addressing consumes bandwidth on all ports on a switched network. This
variable allows control of multicast traffic from transmitters.
0 - Multicast addressing used at all times. Note: multicast bundles do not transmit data until a
receiver is assigned to the same bundle number.
1 - Unicast addressing used to single receiver. Multicast addressing used for multiple receivers.
0x7FFFFF - Multicast addressing is never used. Maximum number of unicast destinations is set by
txMaxUnicast. Receiver request priority is used to determine which receivers are serviced if multiple
receivers are assigned to this bundle.
Host Address
0x5n107 (n is 0 based transmitter number)
SNMP Object ID
1.3.6.1.4.1.2680.1.1.7.1.1.10.n (n is 1 based transmitter number)
Type
Integer
Attributes
Read/write - Persistent
Default Value
0x7FFFFF
Implemented Version
2.6.3
Name
txMaxUnicast
Description
Specifies maximum number of unicast destinations supported simultaneously by the transmitter.
Receivers in excess of this setting will not receive the bundle.
A transmitter can service up to 4 receivers. The number of unicast destinations transmitted to will
never exceed this internal capacity limitation.
If txUnicastMode is set lower than txMaxUnicast, the bundle will switch to multicast before the
limitation on unicast destinations is reached.
If txUnicastMode is set equal to txMaxUnicast, the bundle will switch to multicast when the limitation
on unicast destinations is exceeded.
Host Address
0x5n108 (n is 0 based transmitter number)
SNMP Object ID
1.3.6.1.4.1.2680.1.1.7.1.1.11.n (n is 1 based transmitter number)
Type
Integer
Attributes
Read/write - Persistent
Default Value
1
Implemented Version
2.8.3
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