Module 9 Flashcards
What does HSRP stand for?
Hot Standby Router Protocol
HSRP is a Cisco-proprietary First Hop Redundancy Protocol (FHRP) designed for transparent failover.
What is the primary function of HSRP?
To allow for transparent failover of a first-hop IP device
In HSRP, what is the role of the active device?
To route packets
What happens when the active device fails in HSRP?
The standby device takes over routing responsibilities
What is the HSRP priority range?
0 to 255
What is preemption in HSRP?
The ability of an HSRP router to trigger the re-election process
True or False: The router with the highest HSRP priority becomes the active router.
True
List the states of HSRP.
- Initial
- Learn
- Listen
- Speak
- Standby
What is the default HSRP priority value?
100
In HSRP, what is the function of the standby router?
To monitor the operational status and take over if the active router fails
Fill in the blank: The standby router assumes the role of the forwarding router when it stops seeing _______ from the active router.
Hello messages
What is the purpose of FHRP?
To provide alternate default gateways in switched networks
What is the function of the virtual router in FHRP?
To present the illusion of a single router to hosts on the LAN
Describe the process that occurs when the active router fails.
The standby router takes over the active role and assumes the IPv4 and MAC addresses of the virtual router
What are the two types of FHRP provided by Cisco?
- HSRP
- HSRP for IPv6
What does VRRP stand for?
Virtual Router Redundancy Protocol
What is the difference between VRRPv2 and VRRPv3?
VRRPv3 supports both IPv4 and IPv6 addresses and is more scalable
What is GLBP used for?
To protect data traffic from a failed router while allowing load balancing
What does IRDP stand for?
ICMP Router Discovery Protocol
Fill in the blank: End devices are typically configured with a single default gateway _______.
IPv4 address
What is the maximum time for HSRP hello packets to be missed before a standby router takes over?
10 seconds
What command is used to configure a router to be the active router in HSRP?
standby priority
What is the main advantage of using a virtual router?
To prevent a single point of failure at the default gateway
True or False: With preemption disabled, the first router to boot up becomes the active router regardless of priority.
True
