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Cisco Active Network Abstraction 3.6.6 MPLS User Guide
OL-19192-01
Chapter 9 Using Cisco ANA PathTracer in MPLS Networks
Using Cisco ANA PathTracer in MPLS Networks
Cisco ANA PathTracer enables you to view multiple paths between the source and the destination (or
from a source to number of destinations) in the Cisco ANA PathTracer multipath window, or to view a
selected single path in the Cisco ANA PathTracer single-path window:
• Cisco ANA PathTracer multipath window—Displays all the discovered paths available between the
selected source and destination, including devices and links.
• Cisco ANA PathTracer single-path window—Displays a single path available between the selected
source and destination, as well as the subscribers and properties.
Note For more information about Cisco ANA PathTracer single and multipath windows, see the Cisco Active
Network Abstraction 3.6.6 User Guide
Using Cisco ANA PathTracer in MPLS Networks
You can open and view Cisco ANA PathTracer information between service endpoints, for example, the
IP interface that is attached to the VRF over an MPLS network. The LSP in the MPLS network is found
according to the cross-connect table of each router.
Note The LSP can be traced and displayed by Cisco ANA PathTracer as part of an end-to-end tracing of a
service as well; for example, when viewing a path between one CE device to another. Cisco ANA
PathTracer traces the path that goes over circuits or VLANs in the access networks. It also traces the
LSPs between the VRFs going through all intermediate devices such as CE devices, aggregation
switches, PE routers, and core routers.
To view a specific path, you must specify an initial starting point, such as an IP interface and a
destination IP address (optional). If the traced circuit (for example, a VC or VLAN) ends in a router,
Cisco ANA PathTracer finds the next hop according to the destination IP address. When you select an
endpoint, Cisco ANA extracts the relevant IP address from this point and uses it as the destination.
Cisco ANA PathTracer Starting Points
You can also open Cisco ANA PathTracer by right-clicking a starting point and entering the required
destination IP address. Table 9-1 lists the Cisco ANA PathTracer starting points.
Table 9-1 Cisco ANA PathTracer Starting Points
Element Location Start Options
IP Interface
• Inventory window.
• Affected entity (enabled only if the
affected entity has an IP interface).
• To IP Destination
• Start Here
Site Service view map.
• To IP Destination
• To Subnet Destination
• Start Here