
6 Release Notes for the Cisco 1503 Micro Hub for Software Release 2.01
Documentation Updates
Hub ID Numbers
This section describes the rules that determine the ID number of a particular hub in a stack of hubs.
The hub ID number is used to identify individual hubs in a stack of hubs.
You cannot manually assign an ID number to stacked hub. The ID number is assigned based on how
the hubs are cabled together, not on the particular physical location in the stack itself.
1 The lowest hub ID number in a stack (1) is always assigned to the hub with another hub
connected to its OUT port and with no device connected to its IN port.
2 The highest hub ID number in a stack (any number from 2 to 5) is always assigned to the hub
with no device connected to its OUT port and with another hub connected to its IN port.
Figure 1 illustrates these rules.
Figure 1 Hub ID Numbers in a Stack of Micro Hubs
OUT STACKCONNECT IN
OUT STACKCONNECT IN
OUT STACKCONNECT IN
OUT STACKCONNECT IN
OUT STACKCONNECT IN
OUT STACKCONNECT IN
Hub ID = 1
Hub ID = 2
Hub ID = 3
Hub ID = 3
Hub ID = 2
Hub ID = 1
H11447
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