Running Observer Passively - Network Instruments GigaStor 114ff User Manual

Running Observer passively

136 Running Observer passively
Appendix C GigaStor Portable
Figure 93 Portable GigaStor
Gigabit and Fibre Channel systems have an appropriate copper or
optical nTAP installed in the drive bay on the right side of the system.
WAN system TAPs are shipped separately.
When analyzing a link using a TAP, Observer runs "passively." Passive
operation guarantees that analysis will not affect the link; however, it
does have some implications when running Observer. Because there is
no link over which the system can transmit packets or frames, the
following features are unavailable:
Traffic Generation
Collision Test
Replay Packet Capture
The Portable GigaStor includes a standard 10/100/1000 Ethernet
interface in addition to the WAN, Gigabit, or Fibre Channel
interface(s). The standard Ethernet interface allows you to use the
system on non-gigabit networks by simply connecting it to an
Ethernet hub or switch using a standard Ethernet cable. The TCP/IP
driver has been set to automatically obtain an IP address through the
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