Cabletron Systems MMAC-Plus 9A128-01, Руководство по управлению

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9A128-01 and 9A129-01 Module Specific Information
LES Control Distribute VCC
An optional point-to-multi-point, or point-to-point connection. The LES uses this
to forward LE_ARP requests that it cannot process. This connection is maintained
for as long as the LEC participates in the ELAN.
BUS Multicast Send VCC
A bi-directional, point-to-point VPI/VCI used by the LEC to send broadcast,
multicast and unknown unicast traffic to the BUS. This connection is maintained
for as long as the LEC participates in the ELAN.
BUS Multicast Forward VCC
A point-to-multi-point or a unidirectional point-to-point VPI/VCI from the BUS
to each LEC. It is used by the BUS to forward traffic received from the LECS.