Dear authors,

(Most of) these comments were made during the last IETF as well. Thank you in 
advance for considering them.



  1.  About fault detection for unicast:


By default, it advertises this discriminator with

   BGP using the BFD Discriminator Attribute [ietf-bess-mvpn-fast-

   failover] with BFD Mode TBD4 in an EVPN MAC/IP Advertisement Route

   [RFC7432<https://datatracker.ietf.org/doc/html/rfc7432>] and extracts its 
peer's discriminator from such an

   attribute.

In typical EVPN deployments there are no MAC/IP advertisement routes advertised 
by a PE until the PE does not learn a MAC for a locally attached host. Based on 
the text above, the operator cannot establish BFD session against an EVPN PE 
that has not learn a local MAC yet.
Is that the intend? Or is the intend to advertise a local management MAC for 
the purpose of distributing the BFD discriminator required for unicast fault 
detection? Or is it the MAC allocated in section 8.2?
Please add text is missing to clarify this.



  1.  Unicast mpls encapsulation


- The destination IP port MUST be 3784 
[RFC5881<https://datatracker.ietf.org/doc/html/rfc5881>].

s/IP port/UDP port/



  1.  The draft does not support BDF for IP multicast traffic in EVPN networks

  *   Is this intended?
  *   Are you planning to address this gap? If so, text is needed and the 
discriminator added to S-PMSI A-D routes.


Thanks.
Jorge


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