EIGRP SIA re transmission timer ...just need a math check
i'm just reading/reviewing my notes and i believe i have a mistake in them...so i'm asking IEOC before i make the correction since i have enough space on that page in my notes to make this correction once...
about halfway thru the active timer(3 mins) in EIGRP a router sends a SIA query ie 90 seconds (SIA retransmission timer)
if a SIA response is recieved then the active timer and the SIA retransmission timer are both reset.
this happens 3 times.
then my notes say and i quote " The neighbor wont be declared SIA for up to 6 mins"
how did i get 6 mins (i dont remember the source)...
90+90+90 (the 3 times the SIA retransmission and active time is reset)+ 180 (3 mins of active time after the last reset) = 450seconds or 7.5mins
thanx for any help