The MPLS Topology Server discovers MPLS-specific objects by probing the router and switch objects that are imported from IP Availability Manager. Discovery sources for MPLS LSPs and Discovery sources for MPLS LDP adjacencies and RSVP sessions identify the MPLS discovery sources.

Table 1. Discovery sources for MPLS LSPs

Device/platform

TE tunnels, TE LSPs, P2MP LSPs, and subLSPs 1

LDP LSPs 1

1  SNMP-discovered objects are monitored for status, but CLI-discovered objects are not.

Cisco IOS

MPLS-TE-MIB and CLI

The MPLS Topology Server uses:

  • SNMP discovery to discover Cisco IOS TE tunnel and TE LSP objects.

  • CLI discovery to discover Cisco IOS nested link/node protected TE tunnel objects.

MPLS-LSR-MIB

If SNMP discovery fails or is not supported by the Cisco IOS device, the MPLS Topology Server uses CLI discovery to discover the LDP LSP objects.

Cisco IOX

MPLS-TE-STD-MIB and CLI

The MPLS Topology Server uses:

  • SNMP discovery to discover Cisco IOX TE tunnel and TE LSP objects.

  • CLI discovery to associate the primary TE LSPs with their backup/secondary TE LSPs.

MPLS-LSR-STD-MIB

If SNMP discovery fails or is not supported by the Cisco IOX device, the MPLS Topology Server uses CLI discovery to discover the LDP LSP objects.

Huawei

Not supported

CLI

Juniper M/T

JUNIPER-MPLS-MIB and CLI

The MPLS Topology Server uses:

  • SNMP discovery to discover Juniper TE tunnel objects that are configured for link/node protection.

  • CLI discovery to discover Juniper TE tunnel objects that are configured for path protection.

  • SNMP discovery to discover Juniper P2MP LSP and subLSP objects.

CLI

Juniper ERX

Not supported

CLI
Table 2. Discovery sources for MPLS LDP adjacencies and RSVP sessions

Device/platform

Non-targeted LDP adjacencies 1

Targeted LDP adjacencies 1

RSVP sessions 1

1  SNMP-discovered objects are monitored for status, but CLI-discovered objects are not.

2  If SNMP discovery fails or is not supported, CLI discovery is used to discover the LDP adjacencies.

Cisco IOS

MPLS-LDP-MIB

MPLS-LDP-MIB

CLI

Cisco IOX

Not supported

MPLS-LDP-STD-MIB

Not supported

Huawei

Not supported

MPLS-LDP-STD-MIB

Not supported

Juniper M/T

JUNIPER-MPLS-LDP-MIB 2

JUNIPER-MPLS-LDP-MIB 2

JUNIPER-RSVP-MIB

Juniper ERX

CLI

CLI

Not supported

Appendix A, “MIBs Accessed for Discovery and Remote Ping,” provides a description of the discovery MIB objects that are polled by an SNMP discovery probe. Appendix B, “CLI Commands Invoked for Discovery and LSP Ping,” provides a description of the commands that are invoked by a CLI discovery session.