74
C
HAPTER
4: P
RIVATE
N
ETWORK
-
TO
-N
ETWORK
I
NTERFACE
(PNNI) V
ERSION
1.0
In Figure 17, the hierarchical network is created with the same nodes.
Each node belongs to one of the peer groups. This example will also be
used in later sections to describe the different aspects of PNNI.
Figure 17
Lowest Level Hierarchy
Peer Group Leader
The peer group leader is responsible for transmitting its groups
information to the next higher level in the hierarchy. The peer group
leader will transmit an
aggregated topology
to the next level. This is a
generalized list which contains the summary of the reachable addresses
for its group. For example, it would broadcast the name of the group, but
not the individual members. This common information is also referred to
as
aggregated information
.
In Figure 17, there are 17 nodes which are represented by small circles.
Each node belongs to a peer group which is designated by a larger circle.
The peer group leader is the shaded circle in the group. Exactly how the
leader is chosen and configured is explained in the next section. In
essence, aggregated or summarized information is transmitted upstream,
Peer Group C.1
Peer Group B.1
Peer Group A.2
Peer Group A.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
B.1.2
B.2.2
B.2.1
B.2.3
Peer Group A.3
Peer Group B.2
Border Node
Peer Group Leader
Summary of Contents for CoreBuilder 7000
Page 12: ......
Page 30: ...30 CHAPTER 1 ATM NETWORK BASICS...
Page 32: ...32 CHAPTER 1 ATM NETWORK BASICS...
Page 34: ...34 CHAPTER 1 ATM NETWORK BASICS Figure 8 LANE Network over WAN...
Page 96: ...96 CHAPTER 4 PRIVATE NETWORK TO NETWORK INTERFACE PNNI VERSION 1 0...
Page 184: ...184 CHAPTER 7 LAN EMULATION VERSIONS 1 0 AND 2 0...
Page 206: ...206 CHAPTER 9 DEVICE MANAGEMENT...
Page 222: ...222 APPENDIX A TECHNICAL SUPPORT...
Page 234: ...234 APPENDIX B PROTOCOLS AND INTERFACES...
Page 238: ...238 APPENDIX C COREBUILDER 7000 FAMILY ATM SWITCH SPECIFICATIONS...
Page 242: ...242 APPENDIX D SAFETY INFORMATION...
