Re: [lisp] Some basic questions ...

[Dino Farinacci <[e-mail]>]

> Hello Dino,
> 
> there was another question I forgot regarding the notifications: so 
> when the map-notification is not used as an ACK for map-register but is 
> actually informing the ETRs about events then how is the delivery 
> guaranteed? The underlying IP/UDP transport may drop.

The Map-Server sends Map-Notify messages to the ETR and the ETR responds with Map-Notify-Ack messages.

> For map-register we periodically send again, so packet loss of 
> map-registers is not a big problem. What is your idea for map-notifies? 
> Some of the notifications may be singular events. Other of course could 
> be periodic (e.g. merge notification triggered by the map-registers?).

These are not perioidic, because only when there are locator-set changes, the Map-Notify messages are sent by Map-Servers.

> Would I need an ACK for the map-notification (and some fast-timer 
> re-send, e.g. every 1sec until ACKed) ?  That would take state/timer, 
> although only until's it's ACKnowledged.

Yes, they are called Map-Notify-Ack messages. They contain the same contents as the Map-Notify but just with a different type value.

Dino