2.18.5 FLOBR (Flexible Linkset Optional Based Routing)

FLOBR (Flexible Linkset Optional Based Routing) features:

• When GTT mode is “FLOBR CDPA”, CDPA fields in the MSU shall be used for GTT selector search and GTT set shall be taken from “CDPA GTT SET Name” configured in the selector entry.
• When GTT mode is “FLOBR CGPA”, CGPA fields in the MSU shall be used for GTT selector search and GTT set shall be taken from “CGPA GTT SET Name” configured in the selector entry.
• When GTT hierarchy is “FLOBR CDPA and FLOBR CGPA”, GTT selectors shall be searched as defined in 1. If no selector match is found or CDPA GTTSET is not provisioned, GTT selectors shall be searched as defined in 2.
• When GTT hierarchy is “FLOBR CGPA and FLOBR CDPA”, GTT selectors shall be searched as defined in 2. If no selector match is found or CGPA GTTSET is not provisioned, GTT selectors shall be searched as defined in 1.
• If GTT selectors are not found as specified in 1, 2, 3 or 4 then VSTP will consider this as translation failure.
• With FLOBR, the user can provision a fallback option for each translation that tells us how to route an MSU under the following conditions:
  • Routing when subsequent search failed in FLOBR.
  • Routing when same GTT set name is referred more than once.
  • Limiting the number of database searches to 7 for FLOBR.
• Under the above conditions:
  • When fallback option in last matched translation is set to “No”, the GTT will fail and MSU shall be discarded.
  • When fallback option in last matched translation is set to “Yes”, the GTT will be performed based on that matched entry.