03-30-2017 03:11 AM - edited 03-03-2019 08:30 AM
If a network has 23 switches and 10 VLANs how many root devices are elected?
03-30-2017 03:59 AM
if pvst 10
if mst you can choose from 1 to 10
03-30-2017 04:04 AM
if
03-30-2017 06:20 AM
in mst you can make 1 instance for all vlans and 1 root switch.
or in mst you can make 2 instances for each 5 vlans and 2 root switch.
and so on
03-30-2017 05:08 AM
Hi
You should have 2 root devices, one primary and the secondary. I recommend to select them manually using priorities and select the robust switches. I dont recommend let the selection randomly. Remember the lowest priority is preferred to be the root. If you use Rapid Spanning tree you will have 10 STP instances, 1 for each vlan. And if MST is used you could have 1 STP instance for the 10 vlans.
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