CCNP 350-401 ENCOR Question 33 DISCUSSION

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  • 2023-06-20
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    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.

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    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

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    1 Comments

    test2024

    When you change the HSRP version from 1 to 2, each HSRP group reinitializes because the virtual MAC address format changes between the two versions. Specifically:

    • HSRP version 1 uses the virtual MAC address format 0000.0C07.ACxx where "xx" represents the HSRP group number.
    • HSRP version 2 uses the virtual MAC address format 0000.0C9F.Fxxx where "xxx" represents the HSRP group number.

    Since the virtual MAC addresses are different, changing the version causes the routers in the HSRP group to reinitialize.

    Additionally, the multicast address used in version 1 (224.0.0.2) is different from the multicast address in version 2 (224.0.0.102), but the primary cause of reinitialization is the MAC address change.

    2024-10-21 03:09:47
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