3Com CoreBuilder 7000, Руководство по эксплуатации

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82 C
HAPTER
4: P
RIVATE
N
ETWORK
-
TO
-N
ETWORK
I
NTERFACE
(PNNI) V
ERSION
1.0
Figure 23
The Entire Network
At this point, information from each group is distributed to the third level
hierarchy. Each member in the 3rd level transfers the information as
described previously to the other nodes in this hierarchical level. In turn,
they pass all the information they collected from the nodes in the group
downstream to their respective children nodes (nodes that are lower in
A B C
A.1 A.2
A.3
B.1
C.1
C.1.1
C.1.2
A.3.2
A.3.1
A.1.3
A.1.1
A.1.2
A.2.2
A.2.1
A.2.3
B.1.1
B.1.3
B.1.4
Level 3 Hierarchy
Level 2 Hierarchy
Level1 Hierarchy
Peer Group Leader
Physical Link
KEY
B.1.2
B.2
B.2.2
B.2.1 B.2.3
Logical Link
Level = 64
Level = 80
Level = 96