Cascading Hubs - Sun Microsystems storagetek sl500 Reference Manual

Cascading Hubs

There is no limit to cascading the number of hubs within a network as long as the
following guidelines are followed:
Note – Refer to the hub manufacturer's requirements for cascading, the following
are just general guidelines.
Note that the length of the cable affects the number of allowable ports.
■
Note that the hub adds length to the cabling in the network.
■
Guidelines for Hubs" on page
Use ports 1 and 4 to cascade to other hubs. This increases the potential of dual
■
port devices and redundant paths.
Do not exceed the maximum number of hubs per cascade link. The maximum
■
number of hubs before retiming is six (6) with short cables, two (2) with
maximum length cascade cables.
Configure the loop so the devices are properly positioned in relation to the
■
hub.
FIGURE 4-2
FIGURE 4-2 Cascading Hubs
96122 • Revision: F
is an example of cascading hubs.
1
SERVER
2
3
SL500
ENCLOSURE
1
TAPE
DRIVE
2
SL500
LIBRARY
3
40.)
HUB
TAPE
DRIVE
6
TAPE
DRIVE
5
4
HUB
D R IV E
6
5
SERVER
4
Chapter 4 Fibre Channel Physical Interface 37
Topologies
(See"Cable
T A P E
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