obonaventure/cnp3 — pull request #134 by LeonardJulemont (2014-12-15 11:38:24+00:00)
Title: Update network-stp.rst

Switch 32 has BDPU : [R=9, C=6, T=32.?] which is better than [R=9,C=7,T=19.2] because of the cost 6<7 (cost = 7 because 6 in the received BPDU but +1 for the link).
For [R=9,C=12,T=42.1], cost : 6 < 12 thus the port towards switch 42 is designated.
For [R=9,C=5,T=46.3], costs are equal with switch 32 BPDU cost but, T=32 < T=46 so the port towards 46 si also designated.
Thus the answer should be all the ports are designated.