Full Scale Lab 3 - 1.3 Spanning-Tree

Hello,

 

The very last task requirement in this section: "Ensure that the most recent BPDU received on a port is stored for a maximum of 10
seconds for all even VLANs."

 

The solutions guide has the solution as configuring the "max" age timer setting on all switches in the topology. My solution was to just configure it on the root bridge for the even VLANs (SW4) and the timer value is propogated out to the rest of the STP domain.

 

Verification on a downstream switch (SW2) which has not been explicity configured with the max-age timer:


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sh
span vl 322 | i ID|Time


Root
ID Priority 33090


Hello
Time 2 sec Max Age 10 sec
Forward Delay 15 sec


Bridge
ID Priority 41282 (priority 40960 sys-id-ext 322)


Hello
Time 2 sec Max Age 20 sec Forward Delay 15 sec


Aging
Time 300 sec

 

sh
span root | i 322

VLAN0322
33090 aabb.cc00.1800 100 2 10
15 Et0/0

 

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