
Configuring AppleTalk Services
2-28 114048 Rev. A
In a Source Routing network, every endstation that sends out a frame supplies the
frame with the necessary route descriptors so that it can be source routed across
the network. Thus, for routers to route packets across a Source Routing network,
they must act like endstations, supplying route descriptors for each packet before
they send the packet out onto the network (Figure
2-20).
Figure 2-20. AppleTalk Routers Source Routing across a Token Ring Network
Bridge A
Packet sent from End Station 1
DATA
Packet sent from Router 2
Packet sent from Router 1
Source Route RIF
0830 001A002B 0030
End Station 1
End Station 2
Bridge B
Router 2
Router 1
WF2 WF1
SNAP
WF2 WF1
WF2 WF1
DATA
DATA
SNAP
SNAP
AppleTalk
AppleTalk
AppleTalk
APT0030A
Token
Ring
Token
Ring
Token
Ring
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