System information

4 IBM and Cisco LAN Switching: Interoperability and Migration Guide
Figure 3. Overlaying network
To avoid the cost of parallel trunks, customers may want to speed the
migration of boundary equipment to the newer technology.
1.1.4 Adding more levels to a hierarchy
As network size and traffic volumes increase, it may be desirable or required
to add more levels to the network. As an example, picture the network in
Figure 4 consisting of IBM ATM switch nodes 1, 2, 3, 4, 5, and 6 connected in
a mesh network. We wish to expand by:
1. Adding nodes 7, 8, 9, and 10.
2. Adding nodes 100, 200, 300 and 400 to increase bandwidth capacity of
the backbone to support new applications such as imaging.
Figure 4. Adding more levels: edge nodes
SD
AUI 1 2 3 4 5 6 7 8
100- 240V
0.4-0.2A 50-60Hz
1
xxxx
I
OK
RE S E T
Link
Rcv
Xmt
12345678
12345 67 8 FD X
MDX
12345 67 8 Mana gemen t
SD
AUI 1 2 3 4 5 6 7 8
100- 240V
0.4- 0. 2 A 50- 6 0H z
1
xxxx
I
OK
RESET
Link
Rcv
Xmt
12345678
123 45 67 8 FDX
MDX
123 45 67 8 M ana gemen t
SD
AUI 1 2 3 4 5 6 7 8
100- 240V
0.4- 0. 2 A 50- 6 0H z
1
xxxx
I
OK
RESET
Link
Rc v
Xmt
12345678
123 45 67 8 FDX
MDX
12345678 Managem en t
1
2
3
45
6
7
9
8
10
155Mbps
155Mbps
155Mbps
155Mbps
155Mbps
155Mbps
155Mbps