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HP Netelligent 2008 User Manual Page 38

Hp netelligent 2008: user guide.
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3-12
Installing the Repeater
Isolated
Collision Domain 1
Collision Domain 2
Figure 3-10. Example of Segmentation
NOTES:
1
2
PWR
SEG
Media Expansion
COL
Port
MEP
X
X
1
2
PWR
SEG
Media Expansion
COL
Port
MEP
X
X
1
2
PWR
SEG
Media Expansion
COL
Port
MEP
X
X
1
2
PWR
SEG
Media Expansion
COL
Port
MEP
X
X
1
2
PWR
SEG
Media Expansion
COL
Port
MEP
X
X
The repeaters do not need to be physically adjacent to one another to be in the
same collision domain.
If the combined length of the repeater expansion cables in a stack exceeds 150
feet (45.7 m), the stack is considered as two repeater hops. The IEEE 802.3
specification states four as the maximum number of repeater hops between
stations on a network.
If a repeater in a stack is powered off or hot-swapped, the remaining repeaters
take a moment to merge together. During this time, an SNMP manager may see
the stack as two or more substacks. When the bottom repeater of a stack or
substack detects a change in the stack size, the repeater's SNMP agent issues a
group map change trap . After the remaining repeaters merge, the SNMP
manager sees the repeaters as a single stack.
External Connections via Uplink Port 16
of Repeaters 2 and 3 to Ports 15 and 14 of Repeater 1
3
4
5
6
7
8
9
10
11
X
X
X
X
X
X
X
X
3
4
5
6
7
8
9
10
11
X
X
X
X
X
X
X
X
3
4
5
6
7
8
9
10
11
X
X
X
X
X
X
X
X
3
4
5
6
7
8
9
10
11
X
X
X
X
X
X
X
X
3
4
5
6
7
8
9
10
11
X
X
X
X
X
X
X
X
12
13
14
15
16
UP LINK
COM PORT
MDI MDI-X
X
X
X
X
X
12
13
14
15
16
UP LINK
COM PORT
MDI MDI-X
X
X
X
X
X
12
13
14
15
16
UP LINK
COM PORT
MDI MDI-X
X
X
X
X
X
12
13
14
15
16
UP LINK
COM PORT
MDI MDI-X
X
X
X
X
X
12
13
14
15
16
UP LINK
COM PORT
MDI MDI-X
X
X
X
X
X
Repeater 1
EXPANSION
IN
OUT
Repeater 2
EXPANSION
IN
OUT
EXPANSION
Repeater 3
IN
OUT
EXPANSION
Repeater 4
IN
OUT
Repeater 5
EXPANSION
IN
OUT

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Netelligent 2016

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