That's how I read it ... assuming that proper handling of the LSR echo includes gracefully dropping it on rx.
Ashesh On Jul 16, 2017, at 3:58 PM, Mach Chen <[email protected]> wrote: Hi BFDers, We met a multi-vendor interoperate issue recently, it's about whether an Echo reply is necessary. In Section 6 of RFC5884, 2nd paragraph "... The egress LSR MAY respond with an LSP Ping Echo reply message that carries the local discriminator assigned by it for the BFD session." > From the above text, my understanding is that an Echo reply is optional, the > egress LSR can freely to return or not return an Echo reply, and the Ingress > LSR should not expect there MUST be an Echo reply, but if there is one, it > should handle it properly. Is my understanding correct? Thanks, Mach
