Router Redundancy Protocols Quiz
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Questions and Answers

What is the responsibility of the active router in a network using HSRP?

  • Decreasing the priority of the standby router
  • Configuring the virtual IP as the default gateway
  • Forwarding the traffic of local hosts (correct)
  • Exchanging hello messages with standby routers

    • What happens if the active router goes down in a network using HSRP?

  • Standby router becomes the active router after the hold-down timer time (correct)
  • Exchanging hello messages between active and standby routers stops
  • Configuring the virtual IP as the default gateway
  • Router A forwards all frames addressed to the HSRP MAC address

    • What is the purpose of HSRP preempt?

  • To allow the original active router to take up all responsibilities again (correct)
  • To configure the virtual IP as the default gateway
  • To decrease the priority of the standby router
  • To exchange hello messages between active and standby routers

    • What does the HSRP MAC address 0000.0c07.acxx represent?

    <p>MAC address of the active router</p> Signup and view all the answers

    In a network using HSRP, what does the standby router do when it detects that the active router has gone down?

    <p>Waits until hold-down timer time and becomes active if original active doesn't return</p> Signup and view all the answers

    What is the role of members with the same group ID in HSRP?

    <p>Assuming either active or standby role</p> Signup and view all the answers

    In HSRP, what is the default priority for a router if specific priority configuration is not done?

    <p>100</p> Signup and view all the answers

    What determines which router becomes the active router in HSRP if priority is not configured?

    <p>IP address</p> Signup and view all the answers

    What happens to the active router in HSRP when the standby router is removed?

    <p>It remains active</p> Signup and view all the answers

    What effect does enabling the preempt option have in HSRP?

    <p>Forces the standby router to become active if preempting router has higher priority</p> Signup and view all the answers

    What is the multicast address used for HSRP version 1 messages?

    <p>224.0.0.2</p> Signup and view all the answers

    What is the default hold down timer value in HSRP?

    <p>10 seconds</p> Signup and view all the answers

    What does HSRP Version 2 use as the multicast address for messages?

    <p>224.0.0.102</p> Signup and view all the answers

    In HSRP, what happens if routers in an HSRP group have different versions configured?

    <p>The routers will not interoperate properly</p> Signup and view all the answers

    What is the default hello message exchange interval in HSRP?

    <p>3 seconds</p> Signup and view all the answers

    What range of group numbers is allowed in HSRP Version 1?

    <p>0 to 255</p> Signup and view all the answers

    In HSRP, what determines which router becomes the active router if priority is not configured?

    <p>The router with the highest IP address</p> Signup and view all the answers

    What range of group numbers is allowed in HSRP Version 1?

    <p>0 to 255</p> Signup and view all the answers

    What is the default hold down timer value in HSRP?

    <p>10 seconds</p> Signup and view all the answers

    What is the responsibility of the active router in a network using HSRP?

    <p>To take over as the default gateway for the network</p> Signup and view all the answers

    What effect does enabling the preempt option have in HSRP?

    <p>Forces the active router to immediately revert to standby if a higher priority router becomes available</p> Signup and view all the answers

    What happens to the active router in HSRP when the standby router is removed?

    <p>The active router remains as the active router with no changes</p> Signup and view all the answers

    What does HSRP Version 2 use as the multicast address for messages?

    <p>224.0.0.102</p> Signup and view all the answers

    In a network using HSRP, what does the standby router do when it detects that the active router has gone down?

    <p><em>It initiates a new election process to select a new active router</em></p> Signup and view all the answers

    What is the purpose of HSRP preempt?

    <p>To enable automatic transition of standby router to active if active fails</p> Signup and view all the answers

    What is the multicast address used for HSRP version 1 messages?

    <p>224.0.0.2</p> Signup and view all the answers

    If the active router goes down in HSRP, what prevents the standby router from immediately taking over as the active router?

    <p>The standby router must wait for the hold-down timer time to expire</p> Signup and view all the answers

    What is the responsibility of the active router in a network using HSRP?

    <p>Forwarding all traffic of local hosts</p> Signup and view all the answers

    In HSRP, what determines which router becomes the active router if specific priority configuration is not done?

    <p>The router with the highest MAC address</p> Signup and view all the answers

    What is the purpose of HSRP preempt?

    <p>To enable standby routers to take over as the active router immediately</p> Signup and view all the answers

    What happens if the original active router comes back in a network using HSRP?

    <p>The original active router becomes the standby router</p> Signup and view all the answers

    What does the HSRP MAC address 0000.0c07.acxx represent?

    <p>The assigned HSRP MAC address for a particular group</p> Signup and view all the answers

    Study Notes

    HSRP Overview

    • HSRP (Hot Standby Routing Protocol) is a protocol used to provide redundancy and fault tolerance in a network.

    Active Router Responsibilities

    • The active router in a network using HSRP is responsible for forwarding packets and responding to ARP requests.

    Active Router Failure

    • If the active router goes down, the standby router takes over as the active router.

    HSRP Preempt

    • The purpose of HSRP preempt is to allow the original active router to take over as the active router again after it comes back online.

    HSRP MAC Address

    • The HSRP MAC address 0000.0c07.acxx represents the virtual MAC address used by the active router in an HSRP group.

    Standby Router Responsibilities

    • When the standby router detects that the active router has gone down, it takes over as the active router.

    HSRP Group ID

    • Routers with the same group ID in HSRP work together to provide redundancy and fault tolerance.

    HSRP Priority

    • The default priority for a router in HSRP is 100 if specific priority configuration is not done.
    • If priority is not configured, the router with the highest IP address becomes the active router.

    HSRP Router Removal

    • When the standby router is removed, the active router remains active.

    HSRP Preempt Effect

    • Enabling the preempt option in HSRP allows the original active router to take over as the active router again after it comes back online.

    HSRP Multicast Address

    • The multicast address used for HSRP version 1 messages is 224.0.0.2.
    • HSRP Version 2 uses the multicast address 224.0.0.102 for messages.

    HSRP Hold Down Timer

    • The default hold down timer value in HSRP is 10 seconds.

    HSRP Version Mismatch

    • If routers in an HSRP group have different versions configured, they will not work together to provide redundancy and fault tolerance.

    HSRP Hello Message

    • The default hello message exchange interval in HSRP is 3 seconds.

    HSRP Group Number

    • The range of group numbers allowed in HSRP Version 1 is 0-255.

    HSRP Router Priority

    • If priority is not configured, the router with the highest IP address becomes the active router.

    HSRP Standby Router Takeover

    • If the active router goes down in HSRP, the hold down timer prevents the standby router from immediately taking over as the active router.

    HSRP Original Active Router

    • If the original active router comes back online in a network using HSRP, it will take over as the active router again if the preempt option is enabled.

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    Description

    Test your knowledge on router redundancy protocols and the election of active and standby routers in a network. Understand the concept of virtual IP as the default gateway and the role of standby routers in case of the active router failure.

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