- Written by Simon Liang
- Posted on September 5, 2021
- Updated on September 30, 2024
- 8609 Views
This document describes the VRF selection policy and VRF fallback feature. A VRF selection policy contains match rules that specify certain criteria (e.g. DSCP, IP protocol) as well as a resulting action to select a VRF in which to do the FIB lookup. The VRF fallback feature is an extension of these policies which allows users to optionally specify a “fallback” VRF for each VRF. The behavior is such that if the FIB lookup fails in a match rule’s selected VRF, another lookup will be attempted in the configured fallback VRF. Additionally, the fallback VRF itself can have yet another fallback VRF, such that if the lookup in the VRF and fallback VRF fail, the fallback-of-the-fallback VRF will be looked up (see the Configuration section for an example of this).
- Written by Simon Liang
- Posted on June 10, 2019
- Updated on March 13, 2020
- 6492 Views
Normally, Multiprotocol Label Switching (MPLS) determines the packet forwarding destination based on the top most
- Written by Simon Liang
- Posted on May 21, 2019
- Updated on May 21, 2019
- 6665 Views
Static VRF label termination can be enabled at the egress PE to provide pop and route behavior. It allows one to one