Agilent Technologies J3972A Guía de usuario Pagina 236

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Internetwork Monitor
Interpreting the Internetwork View
5967–9446 235
Non-Routed Traffic
When Internetwork Monitor cannot determine that traffic is routed, it
constructs connector nodes, called pseudo-devices, on the segments.
In particular, pseudo-devices are added when:
The network layer shows a conversation pair’s end points on different
segments. and
The MAC layer also shows the end points on different segments.
To represent this traffic, Internetwork Monitor constructs a connector
node for the traffic end point that doesn’t reside on the segment. The
connector is represented by MAC address 0:0:0:0:0:0 and is assigned the
name Pseudo-Device.
For example:
The network layer shows node A on segment S1 is talking to node D on
segment S2.
The MAC layer also shows that node A on S1 is talking to node D on S2.
In this case, end point D doesn’t reside on S1, so Internetwork Monitor
adds a pseudo-device P1 on segment S1. Similarly, end point A doesn’t
reside on segment S2, so pseudo-device P2 is added to S2.
The data report for intrasegment traffic will show entries for AP1 and
DP2; the segment-to-segment traffic will include the AD traffic in
the S1S2 segment pair’s data.
Figure 51 on page 236 illustrates this example, showing how the traffic is
handled.
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