Sun Microsystems 1.0 User Manual

Page 108

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82

SunFDDI/P 1.0 Adapter User’s GuideMay 1997

7

Figure 7-10 Routing in an FDDI/Ethernet Internetwork

For example, in the FDDI/Ethernet internetwork shown in Figure 7-10, there
are parallel routes between jill and judy across relatively faster and slower
networks:

Route 1 (across FDDI link):
jill➙bob

-le0

➙bob-

pf

➙sam

-pf

➙sam-

le0

➙judy

Route 2 (across Ethernet link):
jill➙bob

-le0

➙bob

-le1

➙sam-

le1

➙sam-

le0

➙judy

An identical number of hops between the two stations exists regardless of the
route taken; therefore,

routed

may send all of the traffic across the slower

Ethernet link in preference to the faster FDDI link.

Ethernet

FDDI

network

DAC

DAC

jill

bob-le1

sam-le1

bob-le0

bob-pf

sam-pf

sam-le0

judy

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