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Introduction
3
The Ethernet LanProbe has 16 MB of memory (optionally 32 MB), and uses
FLASH EPROM. Future upgrades to LanProbe’s firmware are easily downloaded
over the LAN to multiple probes simultaneously. You can also download
firmware using LanProbe’s serial port.
LanProbe maintains a variety of statistical measurements on network
performance, continuously keeping track of traffic levels, errors, and other
important trends. Alarm thresholds can be set on any of these parameters,
immediately alerting the network manager or initiating a packet trace to capture
the details of the event for later analysis. Traffic and error levels are also
monitored per node for each station on the segment.
Private MIB extensions give LanProbe additional capabilities beyond RMON.
Multiple SNMP trap addresses, or groups of addresses, can be defined for event
notification. The probe maps MAC addresses to IP addresses for node
identification, and provides duplicate IP address detection. A real time utilization
variable has been added, which provides the ability to alarm on instantaneous
peaks of network load. An additional Out-of-Band connection to the probe can be
established using Serial Link Internet Protocol (SLIP), either directly, using a
modem, or by using a data switch.
You can configure the LanProbe to perform Echo Test Monitoring (tests to verify
communications) of network nodes from your network management station.
LanProbe allows the network manager to select one or several nodes to perform a
one-time test or specify an interval for periodic testing. You can view the results
of the Echo Test Monitoring from your NetMetrix management console. This can
be very useful for monitoring critical nodes to verify connectivity. This test can
also be performed from several points on the network (using several LanProbes)
to verify connectivity from each point. When a node becomes unreachable an alert
can be sent from LanProbe to your management station. To provide testing of a
large range of nodes, Echo Test Monitoring supports ICMP, IEEE 802.2, and
IEEE 802.3 for Novell IPX. This extension is supported by the NetMetrix
software.