Hello
Yes I see is as a l3 version of a flex link
Basically it's a simple way of providing a secondary redundant conection if the primary interface goes down
The keepalives are there to accommodate the backup interface as by default a tunnel interface is always up when it down however with keepalives enabled they monitor the tunnel and if it lose it top session for scr/dest etc the tunnel will go down and the backup interface will be brought up after the specified delay time value
res
paul
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Kind Regards
Paul
