Upstream routing over VSX LAG SVI links

This section shows two configurations for upstream routing over VSX LAG SVI links:

  • ECMP

  • ECMP and VSX LAG

The ECMP and VSX LAG configuration is the preferred configuration because LAGs introduce simplicity by reducing the number of transit VLANs and associated SVIs. This simplified configuration results in a minimized Sender Policy Framework (SPF) calculation time.

ECMP in a VSX environmentECMP in a VSX environment

ECMP and VSX LAG in a VSX environmentECMP and MCLAG in a VSX environment