Fore Systems forerunner series, Configuration Manual

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ForeRunner ATM Switch Network Configuration Manual
Converting from FT-PNNI to PNNI
C.3 Migration of a Hierarchical FT-PNNI Network
This section discusses the migration of a hierarchical FT-PNNI network to a FORE hierarchical
PNNI network. It is assumed that all switches in your network are FORE switches. If your net-
work contains a contiguous backbone, use the instructions found in Section C.3.1. If your net-
work does not contain a contiguous backbone, use the instructions found in Section C.3.2.
C.3.1 Migration of a Hierarchical FT-PNNI Network with a
Contiguous Backbone
There are two different ways to change a FT-PNNI network with a contiguous backbone. If
you want to convert your network starting with the backbone, use the method described in
Section C.3.1.1. If you want to convert your network starting with the peer groups, use the
method described in Section C.3.1.2. You can use either method.
C.3.1.1 Migration Starting with the Backbone
This section gives a detailed example of how to convert a hierarchical FT-PNNI network with
a contiguous backbone as shown in Figure C.9 to a PNNI network. In this figure, only the bor-
der nodes are shown. The individual nodes within each peer group are not shown.
Figure C.9 -
Hierarchical FT-PNNI Network with 3 Peer Groups and a Contiguous Backbone
PG B
B.1
PG A
A.1
PG C
C.2
C.1
FT-PNNI node
FT-PNNI peer group boundary
FT-PNNI link