Finisar Surveyor - Manual (Page 392)

A-2
Surveyor
User’s Guide
Table A-2. Resource Use of Buffers
Resource Buffer Usage
THGm (Ten/Hundred/
Gigabit module) THGm is a high speed network analyzer card with a single on-board
buffer. THGm supports full line-speed capture or for RJ45 10/100 Mbps
Ethernet or Gigabit Ethernet. Filtering and all other Surveyor features are
supported on THGm modules.
The entire THGm buffer can be allocated for capture, monitor, or transmit
functions.
There is little demand for system resources, regardless of the number of
cards being controlled. Real-time functions introduce some system
resource dependency: the need to copy periodic real-time monitor, analy-
sis, and/or protocol decode updates to Surveyor, and optionally to copy
the real-time buffer to disk.
Portable Surveyor 10/
100 Ethernet Ana-
lyzer Card With the Portable Surveyor 10/100 Ethernet Analyzer Card, both buffers
are implemented in software, thus requiring system resources. To the
extent that a system can keep up with traffic captured by an NDIS card, all
LAN traffic will be copied to Surveyor and filtered, sliced if necessary, then
routed to the capture buffer, real-time buffer, or both if desired. System
resource demands increase with the complexity of analysis and monitoring
tasks, and very much with the number of interfaces Surveyor is controlling.
All Surveyor real-time functions are available.
Simultaneous capture and transmit is not supported.
NDIS When Surveyor uses standard Ethernet adapter cards, both buffers are
implemented in software, thus requiring system resources. To the extent
that a system can keep up with traffic captured by an NDIS card, all LAN
traffic will be copied to Surveyor and filtered, sliced if necessary, then
routed to the capture buffer, real-time buffer, or both if desired. System
resource demands increase with the complexity of analysis and monitoring
configured, and very much by the number of NDIS interfaces Surveyor is
controlling. All Surveyor real-time functions will be available, excluding any
MAC error counters which are not implemented on the card.