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Cisco Prime Network 4.0 User Guide
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Chapter 11 Using Cisco PathTracer to Diagnose Problems
Launching Path Tracer
To view a specific path, you must specify an initial point and a destination, such as an IP or MAC
address. If you specify VC or DLCI information, which ends in a router, Cisco PathTracer finds the next
hop according to the destination IP address. If you do not spec ify a d esti nat ion IP or MAC addre ss,
Cisco PathTracer uses the default gateway in the router. Any business tags that are associated with the
physical or logical entities are also displayed.
Note A path can also be launched if a business tag attached to an endpoint that can be used as the starting
point.
Path Traces and Blocked Ports
The following conditions apply for blocked ports:
• You can launch a path trace from a blocked port. This action is equivalent to launching a path trace
from a bridge.
• You can specify a blocked port as a destination.
• If Cisco PathTracer encounters a blocked port in its path to the destination, the path trace stops. P ath
traces do not traverse blocked ports.
Table 11-3 identifies the available path trace launching points and their locations within Cisco Prime
Network Vision. Cisco PathTracer is available in each location as a right-click menu option.
Cisco PathTracer Right-Click Menu Options
Cisco PathTracer is launched by using right-click menu options. Table 11-3 identifies the launching
points for the different types of elements.
Table 11-3 Cisco PathTracer Right-Click Menu Options
Element Location
Affected Parties • Inventory window
• Ticket Properties window (Affected Parties tab)
Bridge Inventory window
Business tag The path can be found using a business tag, which is attached to the
VPI/VCI, or using an IP interface by entering its key. The path can
then be opened from the Find Business Tag dialog box.
Ethernet flow point • Map view or navigation pane
• Inventory window
IP interface • Inventory window
• Affected entry
Layer 2 MPLS tunnel Inventory window
MPLS-TE tunnel Inventory window
MPLS-TP tunnel endpoint • Map view or navigation pane
• Inventory window
Port Inventory window