Avaya Configuring Bridging Services Manual de usuario Pagina 67

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Using Source Routing Bridge Services
114060 Rev. A 2-7
When Bridge A receives a source routed frame destined for an endstation on Ring
4, it examines the frame’s RIF and locates the next ring ID (4) that immediately
follows the IP network ring ID (2), as shown in Figure
2-5.
Figure 2-5. Examining the RIF Field of an SRF
Bridge A also examines the RIF to locate the bridge ID associated with the remote
bridge used to reach Ring 4 (in this case, Bridge B). Then, Bridge A checks its
mapping table for the IP address that corresponds to Ring ID 4 and Bridge B, and
encapsulates the frame with an IP header. The IP header specifies its own source
address, and the proper IP destination address (1.1.2.2). Finally, Bridge A
forwards the packet onto the IP network.
You control which IP interfaces receive explorer frames by defining an IP
Explorer list for each IP encapsulating bridge. For example, all of the IP
encapsulating bridges that border the IP cloud in Figure
2-4 have IP explorer lists
defined. Each bridge forwards explorer packets that are in its individual list
toward the IP addresses. Note that the IP explorer lists for each bridge can vary.
This allows you to control which IP networks receive explorer traffic.
IP Network Ring ID
Next Ring ID
001A 100A data... 0040
RIF of a Source Routed Frame
MAC
002B
001A 002A FFFA
data...
0040
Source IP Address
Destination IP Address
RIF of an IP Encapsulated Frame
1.1.1.1
1.1.2.2
MAC
BRG0014A
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