tBgpInstanceIgpShortcut

The bits of tBgpInstanceIgpShortcut identify the Layer-2 tunneling
mechanisms used for IGP shortcuts. If a bit is set, the corresponding
tunneling mechanism will be used to resolve paths to BGP next-hops.
              
The tunneling mechanisms represented by each bit are:
  te(0)  - RSVP Traffic Engineering
  ldp(1) - LDP /32 Route Forwarding Equivalence Class (FEC)
  ip(2)  - IP (IP-in-IP or GRE)
  mpls(3)- MPLS
  mpls-bgp(4)- MPLS with BGP label-route tunnel eligibility
              
Evaluation of tunnel preference is based on the following order, in
descending priority:
  1. Traffic Engineered Shortcut (RSVP-TE)
  2. LDP /32 Route FEC Shortcut
  3. IP Shortcut (IP-in-IP or GRE)
  4. Actual IGP Next-Hop.
              
The 'mpls' option instructs BGP to first attempt to resolve the BGP
next-hop to an RSVP LSP. If no RSVP LSP exists or the existing ones
are down, BGP automatically searches for the LDP LSP with a FEC prefix
corresponding to the same /32 prefix in the tunnel table and resolves
the BGP next-hop to it.
              
The 'mpls-bgp' option allows BGP to resolve the BGP next-hop using BGP
tunnels in TTM, but the order of preference (which cannot be changed)
is RSVP then LDP then BGP.
              
This object was obsoleted in release 13.0.

MIB

TIMETRA-BGP-MIB

OID

.1.3.6.1.4.1.6527.3.1.2.14.2.2.1.56

Type

column

Access

readwrite

Status

obsolete

Parent

tBgpInstanceEntry