Cisco Systems 3.6.6 manual Using Cisco ANA PathTracer for MPLS TE Tunnels

Chapter 9 Using Cisco ANA PathTracer in MPLS Networks

Using Cisco ANA PathTracer for MPLS TE Tunnels

To view Layer 2 path information, choose the Layer 2 tab and choose Show All from the View menu. The path information is displayed in the active tab.

Note Selecting a device or link on the map automatically highlights the related parameters in the table.

Layer 2 properties that may be displayed in the Layer 2 tab relating specifically to VPNs include:

•Outer Label—The details of the outer MPLS label.

•Inner Label—The details of the inner MPLS label.

•MAC Address—The MAC address.

•Tunnel ID—The tunnel identifier. The identifier and the router IP addresses of the two tunnel edges identify the pseudowire tunnel.

•Tunnel Type—The tunnel type, 0=Unknown, 1= PWE3, and 2=TE.

•Tunnel Status—The operational state of the tunnel, either up or down.

•Tunnel Local VC Label—The MPLS label that is used by this router to identify or access the tunnel. It is inserted in the MPLS label stack by the local router.

•Tunnel Peer VC Label—The MPLS label that is used by this router to identify or access the tunnel. It is inserted in the MPLS label stack by the peer router.

•Tunnel Local Router IP—The IP address of this tunnel edge, which is used as the MPLS router ID.

•Tunnel Peer Router IP—The IP address of the peer tunnel edge, which is used as the MPLS router ID.

•Distribution Protocol Type—The protocol used by MPLS to build the tunnel, for example, LDP or TDP.

•Peer Oid—The tunnel ID and device name.

Using Cisco ANA PathTracer for MPLS TE Tunnels

Cisco ANA Path Tracer uses label switching information to trace the end-to-end path of a TE tunnel path from one PE router to another.

Using MPLS TE technology, Cisco ANA PathTracer enables you to:

•View a path or list of devices.

•View the following information for each network element:

–The relevant parameters for each interface on all layers along the path.

–The path for the defined MPLS TE-LSP across the network.

The Cisco ANA PathTracer multipath window is displayed showing the MPLS TE tunnel topology map. From this window, you can open the Cisco ANA PathTracer single-path window with the appropriate MPLS TE tunnel information displayed in the Layer 2 tab.

Note Cisco ANA PathTracer does not display or trace EXP bits for L3 VPNs that use PBTS.

Cisco Active Network Abstraction 3.6.6 MPLS User Guide

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