Refer to the exhibits.
Exhibit 1
Exhibit 2
A network uses RSTP, as shown in the exhibits. The network administrator wants switches to use the link that connects to Core-2 to forward some of the traffic. The administrator enters these commands on every switch shown in the exhibit:
The administrator then discovers that the links to Core-2 still did not forward any traffic.
What should the administrator do to enable these links to carry traffic?
A. Activate the MSTP region configuration on all switches.
B. Lower the port cost on the links that connect to Core-2 on the access layer switches.
C. Configure Core-2 with spanning tree priority 0 in instance 2.
D. Change the spanning tree mode to MSTP on all switches.
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D is the correct option. Its clearly mentioned that network uses RSTP which basically uses only single instance. But Network administrators uses the multiple instances to map the vlans to load share admin must enable MSTP on all the switches
and use “spanning tree priority 0 in instance 1” to core-1
I bet C
you must enable MSTP before, because actually use RSTP.
answer: A but after use answer: C
sorry it’s the aswer is “D” (not A),ou must enable MSTP before, because actually use RSTP.
and after “spanning tree priority 0 in instance 1” to core-1 and “spanning tree priority 0 in instance 2” to core-2
Remember that on Aruba OS switches “The spanning tree mode is set to MSTP in factory default.”.
Because of this, when the administrator configured the region name and number, RSTP was changed to MSTP automatically.
So I bet the option is C, because the only step missing is assigning some links in MSTP to Switch 2 on instance 2 to forward traffic.