Table of Contents
Advertisement
16
Host A
Figure 4. Multiple Conversations Through a CrossFire 8730
For example, as shown in Figure 4, while host A is transmitting a byte to host B,
the switch connects only the lines from A to B since there is no need to send packets
to all other ports. At the same time, a second switching circuit can connect host C
to host D. The result: Two packets are sent simultaneously.
Note: The switch transmits broadcast and multicast packets on several switch ports
simultaneously.
The increase in throughput is directly proportional to the number of physical LAN
segments that are interconnected through the switch. A switch with 20 ports
interconnected provides up to ten concurrent paths. With ten simultaneous Token-
Ring conversations, the switch creates 160 Mbps throughput in half-duplex mode,
or 320 Mbps throughput in full-duplex mode.
A single segment can be dedicated to a single host or shared by several. To optimize
throughput, high-speed servers can be given dedicated switch ports.
By transporting Token-Ring packets simultaneously, the CrossFire 8730 boosts
overall network throughput.
CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1
Host B
CrossFire 8730
Switch
Host D
Host C
Switch Overview
Advertisement
Table of Contents
