| Description | This object specifies the maximum time the MTA will
attempt to perform the exponential back-off algorithm.
This timer only applies when the MTA initiated key
management. If the DHCP option code 122, sub-option 4, is
provided to the MTA, it overwrites this value.
Unsolicited key updates are retransmitted according to an
exponential back-off mechanism using two timers and a
maximum retry counter for AS replies.
The initial retransmission timer value is the nominal
timer value (pktcMtaDevRealmUnsolicitedKeyNomTimeout). The
retransmissions occur with an exponentially increasing
interval that caps at the maximum timeout value
(pktcMtaDevRealmUnsolicitedKeyMaxTimeout).
Retransmissions stop when the maximum retry counter is
reached (pktcMatDevRealmUnsolicitedMaxRetries).
For example, with values of 3 seconds for the nominal
timer, 20 seconds for the maximum timeout, and 5 retries
max, retransmission intervals will be 3 s, 6 s,
12 s, 20 s, and 20 s, and retransmissions then stop because
the maximum number of retries has been reached. |