The value of vRtrStaticRouteIgpShortcut is valid only for indirect
static routes (i.e. vRtrStaticRouteStaticType is 'indirect'). The
bits of vRtrStaticRouteIgpShortcut identify Layer 2 tunneling
mechanisms used for IGP shortcuts. If a bit is set, IGP shortcuts
associated with that tunneling mechanism will be used to resolve
next-hop for the static-route. If no bits are set, IGP shortcuts
will not be used to resolve next-hop for the static routes.
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)
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.