Podcast
Questions and Answers
What does the acronym FHRP stand for?
What does the acronym FHRP stand for?
- First Hop Resilience Protocol
- First Host Redundancy Protocol
- First Hop Redundancy Protocol (correct)
- Fast Hop Redundancy Protocol
What role does the multilayer switch play in the given network topology?
What role does the multilayer switch play in the given network topology?
- It functions exclusively as a DHCP server.
- It is solely responsible for managing client addresses.
- It acts as a fault-tolerant default gateway. (correct)
- It does not perform any routing function.
If a client is at 10.1.10.51, which type of address do we give them for the default gateway?
If a client is at 10.1.10.51, which type of address do we give them for the default gateway?
- The address of the DHCP server
- A randomly assigned IP address
- A virtual IP address (correct)
- The address of a specific active router
What is the purpose of the virtual IP address in the context of FHRP?
What is the purpose of the virtual IP address in the context of FHRP?
Which of the following IP addresses is given as an example of a virtual IP address (VIP)?
Which of the following IP addresses is given as an example of a virtual IP address (VIP)?
What happens if a device assigned as the default gateway fails?
What happens if a device assigned as the default gateway fails?
In the given network segment, what is a primary function of the routers?
In the given network segment, what is a primary function of the routers?
Which statement best describes the relationship between the DHCP server and the default gateway in this context?
Which statement best describes the relationship between the DHCP server and the default gateway in this context?
What is the primary function of the virtual IP address 10.1.10.99 in this configuration?
What is the primary function of the virtual IP address 10.1.10.99 in this configuration?
Which statement correctly describes the actions of the active router when it is functioning normally?
Which statement correctly describes the actions of the active router when it is functioning normally?
What happens if the active router fails while providing the virtual IP address?
What happens if the active router fails while providing the virtual IP address?
Which of the following protocols is an open standard for first hop redundancy?
Which of the following protocols is an open standard for first hop redundancy?
What characteristic distinguishes HSRP from VRRP?
What characteristic distinguishes HSRP from VRRP?
In the context of this network setup, how does the client device ultimately connect to the internet?
In the context of this network setup, how does the client device ultimately connect to the internet?
What specific action does a client take when it requires the layer 2 address for the default gateway?
What specific action does a client take when it requires the layer 2 address for the default gateway?
What are the distinct functions of GLBP within first hop redundancy protocols?
What are the distinct functions of GLBP within first hop redundancy protocols?
When two devices are configured for redundancy, what is their primary communication purpose?
When two devices are configured for redundancy, what is their primary communication purpose?
Flashcards are hidden until you start studying
Study Notes
First Hop Redundancy Protocols (FHRPs)
- FHRP stands for First Hop Redundancy Protocol, which provides fault-tolerant default gateways for clients on a network.
- Redundant gateway setup involves two routers, exemplified by a multilayer switch in the topology.
Network Topology
- Example includes PC-10 as a node on the 10.1.10 network, served by two routers (e.g., 10.1.10.100 and 10.1.10.200).
- A DHCP server distributes default gateways, traditionally one of the routers; however, this creates a single point of failure.
Virtual IP Address Management
- To mitigate single point failures, DHCP hands out a virtual IP (VIP), such as 10.1.10.99, as the default gateway.
- The actual routers maintain their own IP addresses but take turns being active on the virtual address.
Client Interaction with Active Routers
- Clients ARP for the VIP to obtain its layer 2 address, forwarding frames to the active router, which processes and routes them.
- If the active router fails, the backup router detects the failure and allows seamless continuity by taking over the VIP.
Examples of FHRPs
- Key protocols for implementing FHRP include:
- VRRP (Virtual Router Redundancy Protocol) - an open standard.
- HSRP (Hot Standby Router Protocol) - a Cisco proprietary protocol.
- GLBP (Gateway Load Balancing Protocol) - another Cisco proprietary method.
Functionality and Benefits
- All discussed FHRPs facilitate the creation of a virtualized default gateway, ensuring network reliability and uninterrupted internet access for clients.
- Upcoming practical demonstration will implement VRRP on VLAN interfaces of multilayer switches, testing connectivity before and after simulating a router failure.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
