On 02/12/2021 10:33, Robert Raszuk wrote:
Hey Peter,
I don't understand what "service stops" you are talking about. Pulse
will never stop any service. It will at most trigger the switch to
alternate service source. If there is none available, nothing will
happen.
Oh really ? Is that so ? That's not what you have been saying all along
by stating that PULSE will bring down IPSec Tunnel. Same for BGP based
services.
Pulse does not replace the overlay protocols functionality. They are the
ultimate source of the trust. Pulse is just an indication that something
may be going wrong an overlay protocols may switch to alternate source
if there are any.
If I receive a PULSE stating that my PE is down why would I continue to
pump Gb/s data to such PE even if there is only single BGP path to it.
I don't see a problem. Without the pulse that is what will happen
anyway, until the overlay detects the loss of the service.
not really, you can act on first one and ignore the same pulse from
other source that comes later. Unless the area partition case the first
pulse is guaranteed to mean the destination is unreachable.
Absolutely not. I cam have control plane issue on the ABRs while data
plane works fine. Needless to say while all PEs work fine as well.
if you have control plane issue on ABR you are busted anyway, we are not
after that case.
Peter
For area
partition case the pulse may trigger the switch to alternate source of
service, which is a good thing as has been described earlier.
I am not that much worried (as alluded to Tony P) for the local area
partitioned case. I am much more worried about false positive PULSE.
See this is a knife without the ability to self heal the wound.
Best,
R.
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