3Com CoreBuilder 7000 Operation Manual page 73

PNNI Routing 73
In Figure 16, a flat network, which has 17 nodes, is shown. Each node is
denoted by a letter and 2 numbers (X.1.1).
A.2.0
A.1.9
A.1.4
A.1.1
A.1.8 A.2.7
A.2.1
A.1.2
A.2.6
A.2.5
A.1.7
A.1.3
A.2.2
A.1.5
A.2.4
A.1.6 A.2.3
Figure 16 A Network With No Hierarchy