求教 350-401 Q33

pengwu

Which behavior can be expected when the HSRP version is changed from 1 to 2?
A. No changes occur because the standby router is upgraded before the active router.
B. No changes occur because version 1 and 2 use the same virtual MAC OUI.
C. Each HSRP group reinitializes because the virtual MAC address has changed.
D. Each HSRP group reinitializes because the multicast address has changed.

Correct Answer: C

个人觉得该题答案应是D，求教各位专家。

hsbc

答案应该是C

参见下面这个思科官网描述
https://www.cisco.com/c/en/us/td ... ok/fhp-hsrp-v2.html

HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 0000.0C9F.F000 to 0000.0C9F.FFFF. The increased group number range does not imply that an interface can, or should, support that many HSRP groups. The expanded group number range was changed to allow the group number to match the VLAN number on subinterfaces.

When the HSRP version is changed, each group will reinitialize because it now has a new virtual MAC address.

thamky

答案 C,  Cisco - https://www.cisco.com/c/en/us/td ... ok/fhp-hsrp-v2.html            
   " When the HSRP version is changed, each group will reinitialize because it now has a new virtual MAC address ".

ericxia

谢谢提供

pengwu

感谢楼上俩位：）

mayccnp

谢谢