Cabletron Systems ZX-250 Benutzerhandbuch
4-4 SmartCell ZX-250 User Guide
ATM Routing
Switch Administration
2p›F
Dotted lines in the diagrams below represent one-way routes to the devices
pointed to by the arrowheads. Each route is defined on the device from which the
dotted line originates.
pointed to by the arrowheads. Each route is defined on the device from which the
dotted line originates.
Figure 4-1 IISP route across PNNI domain
A second IISP device (Switch D) is added behind Switch A. If Switch D also needs to reach Switch C for LECS
support, you must define additional IISP routes between Switches D and C, B and D, and A and D. Figure 4-2 shows
the typical “route to every point reached” IISP topology.
support, you must define additional IISP routes between Switches D and C, B and D, and A and D. Figure 4-2 shows
the typical “route to every point reached” IISP topology.
Figure 4-2 Routes needed for a second IISP switch
A
B
C
LEC
LECS
Physical link
IISP route
IISP Domain
PNNI Domain
B
C
LECS
A
LEC
D
Physical link
IISP route
LEC
IISP Domain
PNNI Domain