In any kind of asymmetric routing rpf and firewall should be turned off.
Yep, on the disabling firewall+ECMP it's documented everywhere.
For RPF+ECMP I haven't seen any documentation, design or any guide so many of my customers missed that settingsBayu Wibowo | vExpert NSX, VCIX6-DCV/NV, Cisco Champion, AWS-SAA
Author of VMware NSX Cookbook http://bit.ly/NSXCookbook
https://nz.linkedin.com/in/bayupw | twitter @bayupw
And another very important with ECMP and OSPF enabled , graceful restart on OSPF should be always OFF.
What is the exact reason to have the graceful restart on OSPF to be off with ECMP ?