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Hub Redundancy Management
Figure 4-2. Redundantly Connected Hub Device
The following example illustrates redundancy between hubs.
Say that you have used redundant circuit management to create a connection
between the Accounting Department and the Payroll Department of your
company. These departments are on the same floor and have two repeaters
between them on an Ethernet network. Suppose a system overload occurred
IRB
S
ON
ST
RC
DN
CR
PO
ON
RH
NK
DN
CR
PO
NS
LK
A
ETHE
C
O
F
O
TH
RH
C
O
N
M
M
B
MT8
S
1
5
2
4
3
4
6
8
LLRR
MT8
S
1
5
2
4
3
4
6
8
LLRR
IRB
S
ON
ST
RC
DN
CR
PO
ON
RH
NK
DN
CR
PO
NS
LK
A
ETHE
C
O
F
O
TH
RH
C
O
N
M
M
B
MT8
S
1
5
2
4
3
4
6
8
LLRR
MT8
S
1
5
2
4
3
4
6
8
LLRR
Primary Hub Device
Secondary Hub Device
Primary Active Circuit
Backup Inactive Circuit