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Active Monitor Cards
Active monitor cards are connected directly
in-line with the data circuit. While the
monitoring station is on-line, network traffic
must be forwarded from one side of the monitor
point to the other using software that is
written for this purpose. This type of active
monitoring solution is required when the
application must modify the traffic before it is
forwarded.
ImageStream offers the active monitor cards
listed below. With the appropriate volume,
ImageStream can modify standard network cards to
provide automatic pass-through during power
loss. In addition, ImageStream offers a number
of off-the-shelf network cards that may be used
in active monitoring applications without
support for the automatic pass-through feature.
Active 10/100 Ethernet Monitor Card
ImageStream's active 10/100 ethernet monitor
card is a two-port 32/64-bit PCI card that
supports automatic pass-through with loss of
power.
Active HSSI Monitor Card
ImageStream's active HSSI monitor card is a
two-port 32-bit PCI card that supports automatic
pass-through with loss of power.
Passive Monitor Cards Passive monitor cards are used in conjunction
with a monitor tap that maintains network
continuity when the monitor card is disconnected
from the tap. Passive monitoring systems like
this support packet forwarding across the tap
without any special software. In contrast with
active monitoring systems, passive systems
cannot be used to modify the data as it passes
across the monitor point.
Passive Ethernet Monitor Cards
ImageStream's passive ethernet cards are
designed to work with different ethernet taps
including the 10/100 UTP ethernet and the
gigabit ethernet fiber tap.
Passive Synchronous Serial Monitor Card
ImageStream's passive synchronous serial monitor
card is designed to work with ImageStream's
synchronous serial tap to monitor V.35, RS232,
and RS422 (EIA530, RS449, or X.21) serial
interfaces.
Passive T1 and E1 Monitor Cards
ImageStream's passive T1 and E1 monitor cards
are designed to work with ImageStream's T1/E1
tap to monitor T1 or E1 interfaces.
Passive HSSI Monitor Cards
ImageStream offers two different passive HSSI
monitor cards including a low-cost card and a
co-processed card. Both cards are designed to
work with ImageStream's HSSI tap to monitor HSSI
interfaces running at speeds up to 52 Mbps.
Passive DS3 and E3 Monitor Cards
ImageStream offers DS3 and E3 monitor cards,
with or without an onboard co-processor. These
cards are designed to work with ImageStream's
DS3 or E3 taps to monitor DS3 or E3 interfaces.
Passive ATM OC3 Monitor Card
ImageStream offers a passive ATM OC3 monitor
card that is designed to work with ImageStream's
OC3 tap.
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