KTI Networks KGS-2404 manual Parameter value/LAN Max. collision domain DTE to DTE, BurstLimit

Parameter value/LAN

Max. collision domain DTE to

DTE

Max. collision domain with repeater Slot time Interframe Gap AttemptLimit BackoffLimit JamSize MaxFrameSize MinFrameSize

BurstLimit

10Base	100Base		1000Base
100 meters	100 meters for UTP		100 meters for UTP
	412 meters for fiber		316 meters for fiber
2500 meters	205 meters		200 meters
512 bit times	512 bit times		512 bit times
9.6us	0.96us		0.096us
16	16	16
10	10	10
32 bits	32 bits		32 bits
1518	1518	1518
64	64	64
Not applicable	Not applicable		65536 bits

Table 3-4 Ethernet parameters for half duplex mode

In full-duplex operation mode, both transmitting and receiving frames are processed simultaneously. This doubles the total bandwidth. Full duplex is much easier than half duplex because it does not involve media contention, collision, retransmission schedule, padding bits for short frame. The rest functions follow the specification of IEEE802.3. For example, it must meet the requirement of minimum inter-frame gap between successive frames and frame format the same as that in the half-duplex operation.

Because no collision will happen in full-duplex operation, for sure, there is no mechanism to tell all the involved devices. What will it be if receiving device is busy and a frame is coming at the same time? Can it use “backpressure” to tell the source device? A function flow control is introduced in the full-duplex operation.

31