I agree, there is no clarity for all possible situations and from my experience a) and c) should be correct and take special care. Changing existing policy doesn't drop a session (usually ;) and I saw when adding a new policy in the existing policy chain didn't drop BGP, but might be not always the case. If the router is RR may also affect it's behavior, I think almost every network engineer was hit by this Juniper "feature".

Kind regards,
Andrey

Raph Tello писал(а) 2022-02-05 03:55:
Hey,

not really clear to me what that KB is exactly saying.

Does it say:

a) Peer will be reset when it previously hadn’t an individual
import/export policy statement but the group one and then an
individual one is configured

b) Peer will be reset each time it‘s individual policy is touched
while there is another policy in the group

or

c) Peer is reset the first time it receives it‘s own policy under
the group

Unfortunate that this seems to be not really well documented.



- Tello

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