
Using Source Routing Bridge Services
114060 Rev. A 2-17
Source Routing across an IP Network
This section provides details on how IP encapsulation works by tracing a
specifically routed frame as it is sent out from Endstation 1, traverses several
bridges and an IP network, and finally arrives at Endstation 2 (Figure
2-11).
Figure 2-11. Tracking an IP-Encapsulated Frame from ES1 to ES2
Note: At this point, assume that explorer packets have traversed the network
and identified the paths to all reachable interfaces.
4
3
Internal
Internal
Bridge ID = A
Group ID = FFF
LAN ID = 100
Internal
Internal
Bridge ID = A
Group ID = FFF
LAN ID = 101
Internal
Internal
Bridge ID = A
Group ID = FFF
LAN ID = 102
Bridge C
Example A Example B Example C
1
1.1.1.1
1.1.2.2
Bridge A
Bridge B
ES1
ES2
IP Network
Ring ID = 2
BRG0020A
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