Cabletron Systems SmartCell 6A000 - Manual (Page 42)

4-8 SmartCell 6A000 User Guide
Setting Up Routes Switch Administration
IISP routes between A, B, and C can be defined by
11:22: + group identifier byte
Collectively, groups A, B, and C represent the super-group "A-B-C." Any group from outside A-B-C can define a route
to A-B-C by using just 11:22.
Figure 4-2 Hierarchical network design using netprefixes and IISP routes
Routing Loops
Be careful not to create "ambiguous routes" (that is, routes defined by too few bytes). For instance, if a route is defined
within the super-group A-B-C by specifying 11:22 as the destination, a routing loop is created. An additional byte is
necessary to specify to which group (A, B, or C) the destination belongs.
11:22:33:00
11:22:33:01
11:22:44:01
11:22:44:00
11:22:55:01
11:22:55:00
11:22:33
11:22:44 11:22:55
11:22:
A
B
C
super-group
another
=
super-group