netAlly ETHERSCOPE nXG, User Manual

Page: 569 / 723

Introduction to Path
Analysis
Path Analysis combines Layer 3 and Layer 2
measurements.
The Layer 3 measurement combines the classic
Layer 3 IP (UDP, ICMP, or TCP) traceroute
measurement with a view of the path through
the Layer 2 switches.
The Layer 2 measurement discovers switches
between the router hops by looking for the
routers' MAC addresses in the switch
forwarding tables by sending SNMP queries to
all discovered switches. The switches found in
the path are displayed between the router hops
when the measurement finishes.
Path Analysis is most effective when you have
configured the Discovery app with SNMP
credentials. See
SNMP Configuration in the
Discovery Settings topic to learn how.
Path Analysis App
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