Robert,
On 06/07/2022 15:07, Robert Raszuk wrote:
Hi Peter,
Can you please point me in the draft
https://www.ietf.org/id/draft-ppsenak-lsr-igp-ureach-prefix-announce-00.txt
<https://www.ietf.org/id/draft-ppsenak-lsr-igp-ureach-prefix-announce-00.txt>
to some section which specifies based on exactly what network flooding
changes UPA will be generated by ABRs ?
Section 4:
"The intent of UPA is to provide an event driven signal of the
transition of a destination from reachable to unreachable."
I think such text is not an implementation detail, but it is critical
for mix vendor interoperability.
Can UPA also be generated by P node(s) ?
only if they are ABRs or ASBRs.
Specifically I was looking to find some information on how do you
achieve assurance that UPA really needs to be generated when using
various vendor's nodes with very different flooding behaviours and when
subjects PEs may have a number of different links each with different
node/link down detection timer ?
sorry, I don't understand the above.
thanks,
Peter
Many thx,
R.
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