Relicensing the viprion host to fix automatic update of signatures on ASM guests

Hello,

We have a Viprion host where F5 guests are running ASM. Recently we noticed that the signature updates were failing due to service check date for license exceeding 18 months. Now i have to re-license the host, so that the guests get the license too.

Had some queries on re-licensing. Will it interrupt the running of the guests? I read that it will reload the config and interrupt the traffic. Whats the best way of doing it in our kind of environment?

We have a similar DR setup in other data centre and guests has HA pair running there. Should i shut down all the guests and then do re-licensing from the host GUI console? Or can i do the re-licensing with all guests active.

I don't have a clue on how this will interrupt the traffic. If anyone has done this before please share your views.

Another question is on ASM signatures updates, can i apply those signatures manually to the guests to avoid re licensing and maintenance for some time? Thanks in advance.