[Satya] Yes, New PE needs to wait for 3 sec. According to RFC 7438, the receiving PEs also need to wait for 3 secs. But, ideally, a PE that is going from DF to non-DF or non-DF to non-DF should become the non-DF rightaway. Only the PE that is going DF really needs to wait for 3 secs. This is not explicitly spelled out in the draft but we are thinking along these lines.
Sudhin>> you are correct Satya but how to deal with traffic for 3 seconds when a new type 4 route comes. DF election kicks in and all PE's, For 3 seconds how to deal with traffic, the state machines need to be updated like blocking traffic or forwarding. if during that time the traffic is forwarded then a loop will be created. the EVPN RFC says SH label and BUM drop after the election, but correct me if I am totally wrong during the transition how to deal is not covered.I request your valid input on this. How to deal in that situation,what is the state of PE's during 3 seconds period.How to reach a consensus between vendors. Say for example vendors design custom solution to handle this, then how the inter op between vendors will not work. [Tony saiz:] The FSM clarifies that. No DF is given up on arrival of new ES routes.
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