Hello everyone.
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/spanning-tree-configuring-rstp.htmlThe Juniper documentation above states:
"RSTP responds to changes within the timeframe of three hello BPDUs (bridge protocol data units), or 6 seconds"
I take this to mean that the RSTP BPDU's default max age is 6 seconds. However, I see that the max age in the RSTP BPDU shown below is 20 seconds.
19:39:16.083654 In 02:05:86:71:4e:02 > 01:80:c2:00:00:00, 802.3, length 39: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl 0x03: STP 802.1w, Rapid STP, Flags
[Learn, Forward], bridge-id 8000.02:05:86:71:4e:02.81ea, length 43
message-age 0.00s,
max-age 20.00s, hello-time 2.00s, forwarding-delay 15.00s
root-id 8000.02:05:86:71:4e:02, root-pathcost 0, port-role Designated
Why is the max-age set to 20 seconds when it should be 6 seconds?
Thanks,
Deepak