GarrettCom DS60s 사용자 설명서

Magnum DS50 / DS60s Dual Speed Hubs                  Installation and User Guide (06/02)

 

This chapter describes the function and operation of the Magnum DS50 / DS60. 

The repeater ports (port #1-5) of  a Magnum DS50 / DS60 handles the two different 

traffic domains separately. The DS50 / DS60 provides switched (bridged) connectivity between 

the Ethernet (10Mbps) and Fast Ethernet (100Mbps) domains.  It joins the two network 

domains for unified operation and filters/ forwards packets in both directions to maximize 

bandwidth utilization and performance. The Magnum DS50 / DS60 is a  hardware plug-and-

play device. There is no software set-up to be done at installation or for maintenance. The 

functions of the DS50 / DS60 is described in this manual. 

 

Each time a packet is received on one domain of the bridge logic, the decision is 

taken to either filter or forward the packet. Error packets are always filtered. For good packets, 

the filter and forward decisions are made based on the destination addresses contained in each 

packet. If the destination address is on the same domain from which the packet originated, then 

it is filtered and not forwarded to the other domain. If the destination address is not found to be 

a match in the address table for the originating domain, then it is forwarded to the other 

domain. If it is a new node address coming in which the switch did not previously know about, 

it “learns” the new address and puts it in the correct port address table. See “Address Learning” 

for more details.  

This diagram below shows the filter / forward logic for both domains at port # 1-5. 

10Mb Domain :  10Mbps  packets are
forwarded when the destination addresse is
NOT in the 10Mb domain address table.

  100Mbps  packets are

forwarded when the destination address is
NOT in the 100Mb domain address table.

     10Mbps  packets are

filtered when the destination address is

in the 10Mbps  domain address table.

     100Mbps  packets are

filtered when the destination address is

in the 100Mbps  domain address table.

 

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