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MPLS LDP Peer Details report

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Stuart Hill
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To run a MPLS LDP Peer Details report

 

The MPLS LDP Peer Details report provides an inventory of MPLS Label Distribution Protocol peers. You can configure the parameters of the report to focus on the components that you are most interested in.

 

MPLS LDP Peer Details report details:

Name Description
Device Name name of the device.
LSR ID Label Switching Router (LSR) identifier is the first 4 bytes of the Label Distribution Protocol (LDP) identifier.
Loop detection capability

indicates the LSR loop detection capability, and not necessarily its current state. Loop detection is determined during session initialization. Individual sessions may not run with loop detection. Loop detection can be:

  • None, loop detection is not supported on this LSR.
  • Other, loop detection is supported but by a method other than those explicitly defined in the MIB.
  • Hop Count, loop detection is supported only through hop count.
  • Path Vector, loop detection is supported only through path vector.
  • Hop Count And Path Vector, loop detection is supported by both hop count and path vector.
Label retention mode

Label Retention Mode. When set to:

  • Conservative, the advertised label mappings are retained only if they will be used to forward packets, i.e. if label came from a valid next hop.
  • Liberal, all advertised label mappings are retained whether they are from a valid next hop or not.
LDP session traps enabled

LDP Session Traps Enabled. When set to:

  • Enabled, the mplsLdpSessionUp and mplsLdpSessionDown can be
    generated.
  • Disabled, the mplsLdpSessionUp and mplsLdpSessionDown can not
    be generated. The default is Disabled.
LDP Peers  number of LDP peers.

 

Name Description
Advertised IP IP address advertised to its LDP peers.
Label distribution method

Label Distribution Method. When the LSR is using:

  • Downstream Unsolicited distribution, it advertises FEC-label bindings to its peers when it is ready to forward packets in the FEC by means of MPLS.
  • Downstream on Demand distribution, it provides FEC-label bindings to a peer in response to specific requests from the peer for a label for the FEC.
Path vector loop limit

Path Vector Hop Limit. When set to:

  • 0, loop detection for path vectors is disabled.
  • a value greater than zero, loop detection for path vectors is enabled, and the Path Vector Limit is this value.

For the Path Vector Hop Limit to have effect, the device’s Loop Detection Capability must be set to either Hop Count And Path Vector or Path Vector.
LDP version version number of the LDP protocol. When set to 0, this indicates that the version of the protocol is unknown.
TCP port LDP TCP port 646 used for establishing transport connection.
UDP port UDP port, by default 646, used with the discovery message.

 

 

To run a MPLS LDP Peer Details report:

mpls ldp peer details 2.png

  1. In the Main Menu, click Reports.
  2. This will open the Reports page. Click Connectivity and Routing.
  3. This will open the Connectivity and Routing page. Click MPLS LDP Peer Details.
  4. This will open the MPLS LDP Peer Details Options page.
  5. If you want to reuse previously saved report values, select it in the Use saved values dropdown field.
  6. Specify the format of the report in the Report format field.
  7. Specify the Report style template you want to use for the report from the dropdown field. Please see this article for help and information on reporting style templates.
  8. Specify the View against which the report is to be run in the Please select a View dropdown field. You can drag Views into this field from the Drop Box.
  9. Specify the time zone to which you want the reporting period to apply. By default, this is set to None, which means that the time zone of the host/consolidation server is used.
  10. Click Save to save your report values, Run to run immediately, or click Cancel.

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