642-813中的142题

llhawk

Refer to the exhibit.

VLAN 1 and VLAN 2 are configured on the trunked links between Switch A and Switch B. Port Fa 0/2 on Switch B is currently in a blocking state for both VLANs. What should be done to load balance VLAN traffic between Switch A and Switch B?

A. Lower the port priority for VLAN 1 on port 0/1 for Switch A
B. Lower the port priority for VLAN 1 on port 0/2 for Switch A
C. Make the bridge ID of Switch B lower than the ID of Switch A
D. Enable HSRP on the access ports

Correct Answer: B

哪位兄弟给解释下答案，谢谢了！

wooinsung

这种情况下选择根端口 比的是上级网桥优先级 也就是看swA 因为是双线，所以上级网桥是同一个 只能比上级网桥的端口优先级， 和优先级小的上级网桥端口相连的本网桥端口 就会成为根口，也就不会被block了