I beleive the MaxAge timer is for interoperability and integration of RSTP Bridges into networks that include legacy STP Bridges. At least thats what Section 17.14 of the IEEE 802.1D standard states. You can look there for clarification.
IMHO the max age timer is the time interval a switch will store a BPDU before discarding it. While running STP each port keeps a copy of the best BPDU it has heard and if the BPDU's source loses contact with the switch port, the switch notices that a topology change occured after the max age timer elapses and the BPDU is aged out. The default value for this timer is 20 secs and probably this timer deals with the amount of time when the BPDU is aged out of the table without recieveing an update. The expiration would indicate an indirect failure with designated or root bridge
I agree with your statement as it applies to STP. RSTP, I believe, operates differently.
I found this in Cisco Documentation
"RSTP can achieve much faster convergence Classic 802.1d timers such as forward delay and max_age are nearly only used as a backup and should not be necessary if point-to-point links and edge ports are properly identified set by the administrator, and if there is no interaction with legacy bridges."
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.