User Manual
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Two types of flow control:
1. In the half duplex mode, flow control is through back pressure. It is to send a jamming signal to
the transmission source to reduce transmission speed.
2. In the full duplex mode, flow control generally follow IEEE802.3x standard. Switch sends "pause"
to information source to pause its sending information.
Use flow control to control the data flow between the sending and receiving nodes, can prevent
packet loss.
Polarity (MDI/MDIX auto-negotiation)
MDI-II (Medium Dependent Interface- II mode), is a kind of standard built by IEEE for RJ-45 UTP
cable of fast Ethernet 100BASE-T. II stands for parallel configuration. MDI-X(Media Dependent
Interface-x mode) and MDI- II is a kind of standard built by IEEE for RJ-45 UTP cable of fast Ethernet
100BASE-T. X stands for crossover configuration.
5.6.2 Bandwidth Management
Bandwidth management mainly refers to limit the data‘s egress and ingress bandwidth to save the
network sources.
Click [port setting/bandwidth management] and enter into the following interface.
Egress Bandwidth Configuration:
―----‖ stands for no limitation for the speed, the others are corresponding speed.
As shown in following figure 5.6.2.1, the forcible egress rate of Port 3 is 30Mbps. Only need to
select 30Mbps in egress rate setting of Port 3. The bandwidth of Port 3 as receiver is still 100Mbps, but
the forcible egress bandwidth of Port 3 is 30Mbps.
(Figure 5.6.2.1)
Ingress Bandwidth Configuration:
―----‖ stands for no limitation for the speed, the others are corresponding speed.
The ingress rate is related to CoS priority. As shown in following figure 5.6.2.2, the forcible ingress
rate of Port 2 is 20Mbps. Only need to select 20Mbps in ingress rate setting of Port 2. The bandwidth of
Port 2 as transmission is still 100Mbps, but the forcible ingress bandwidth of Port 2 is 20Mbps.
Содержание IES615-1F-2DI
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