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Questions and Answers
What is the responsibility of the active router in a network using HSRP?
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?
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?
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?
What does the HSRP MAC address 0000.0c07.acxx represent?
In a network using HSRP, what does the standby router do when it detects that the active router has gone down?
In a network using HSRP, what does the standby router do when it detects that the active router has gone down?
What is the role of members with the same group ID in HSRP?
What is the role of members with the same group ID in HSRP?
In HSRP, what is the default priority for a router if specific priority configuration is not done?
In HSRP, what is the default priority for a router if specific priority configuration is not done?
What determines which router becomes the active router in HSRP if priority is not configured?
What determines which router becomes the active router in HSRP if priority is not configured?
What happens to the active router in HSRP when the standby router is removed?
What happens to the active router in HSRP when the standby router is removed?
What effect does enabling the preempt option have in HSRP?
What effect does enabling the preempt option have in HSRP?
What is the multicast address used for HSRP version 1 messages?
What is the multicast address used for HSRP version 1 messages?
What is the default hold down timer value in HSRP?
What is the default hold down timer value in HSRP?
What does HSRP Version 2 use as the multicast address for messages?
What does HSRP Version 2 use as the multicast address for messages?
In HSRP, what happens if routers in an HSRP group have different versions configured?
In HSRP, what happens if routers in an HSRP group have different versions configured?
What is the default hello message exchange interval in HSRP?
What is the default hello message exchange interval in HSRP?
What range of group numbers is allowed in HSRP Version 1?
What range of group numbers is allowed in HSRP Version 1?
In HSRP, what determines which router becomes the active router if priority is not configured?
In HSRP, what determines which router becomes the active router if priority is not configured?
What range of group numbers is allowed in HSRP Version 1?
What range of group numbers is allowed in HSRP Version 1?
What is the default hold down timer value in HSRP?
What is the default hold down timer value in HSRP?
What is the responsibility of the active router in a network using HSRP?
What is the responsibility of the active router in a network using HSRP?
What effect does enabling the preempt option have in HSRP?
What effect does enabling the preempt option have in HSRP?
What happens to the active router in HSRP when the standby router is removed?
What happens to the active router in HSRP when the standby router is removed?
What does HSRP Version 2 use as the multicast address for messages?
What does HSRP Version 2 use as the multicast address for messages?
In a network using HSRP, what does the standby router do when it detects that the active router has gone down?
In a network using HSRP, what does the standby router do when it detects that the active router has gone down?
What is the purpose of HSRP preempt?
What is the purpose of HSRP preempt?
What is the multicast address used for HSRP version 1 messages?
What is the multicast address used for HSRP version 1 messages?
If the active router goes down in HSRP, what prevents the standby router from immediately taking over as the active router?
If the active router goes down in HSRP, what prevents the standby router from immediately taking over as the active router?
What is the responsibility of the active router in a network using HSRP?
What is the responsibility of the active router in a network using HSRP?
In HSRP, what determines which router becomes the active router if specific priority configuration is not done?
In HSRP, what determines which router becomes the active router if specific priority configuration is not done?
What is the purpose of HSRP preempt?
What is the purpose of HSRP preempt?
What happens if the original active router comes back in a network using HSRP?
What happens if the original active router comes back in a network using HSRP?
What does the HSRP MAC address 0000.0c07.acxx represent?
What does the HSRP MAC address 0000.0c07.acxx represent?
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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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