This network is running legacy STP 802.1d. Assuming "hello_timer" is fixed to 2 seconds, which parameters can be modified to speed up convergence times after single link/node failure?
A.
The transit_delay=5 and bpdu_delay=20 are recommended values, considering hello_timer=2 and specified.
B.
Only the maximum_transmission_halt_delay and diameter parameters are configurable parameters in 802.1d to speed up STP convergence process.
C.
The max_age and forward delay parameters can be adjusted to speed up STP convergence process.
D.
Only the transit_delay and bpdu_delay timers are configurable parameters in 802.1d to speed up STP convergence process.
In 802.1d STP, convergence is influenced by hello timer, max_age, and forward_delay.
While hello_timer typically remains at 2 seconds, lowering max_age (default 20s) and forward_delay (default 15s) can speed up convergence.
Forward_delay controls the time spent in listening and learning states; max_age determines how long a BPDU is considered valid before recalculating topology.
Why other options are incorrect:
A, B, D: These timers (transit_delay, bpdu_delay, maximum_transmission_halt_delay) are not directly adjustable parameters in 802.1d implementations.
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