11-25-2019 02:39 PM
According to this link, the max age, hello time, and forward delay values are sent in all BPDUs.
Does the root switch determine the values of all these timers, and the switches below it also set the same values when BPDUs are sent down the spanning tree?
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11-25-2019 03:11 PM
11-25-2019 03:01 PM
@Sam Brynes Hello,
The max age and hello time are sent in all BPDUs,
this are common spanning-tree states: 802.1d
•BLOCKING = 20 secs = MAX AGE
•LISTENING = 15 secs = FORWARDING DELAY
•LEARNING = 15 secs = FORWARDING DELAY
•FORWARDING
•DISABLED
RAPID SPANNING-TRE STATES:
Discarding > Alternate, Backup & Disabled ports
Learning
Fowarding > Root, Designated & Edge ports
If a superior BPUD is received on a interface this will be a new root bridge if no security features were applied at actual root of spt topology.
11-25-2019 03:11 PM
11-25-2019 03:24 PM
Hi,
in general, the answer to your question is yes.
If you change it only on the Root Bridge - the settings will adapt on all other switches in the same STP domain, as they process the values seen in BPDUs coming from the Root Bridge.
Best regards
Julian
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