Routing Redundancy Protocols (obj 2.1) Flashcards
(17 cards)
What is the Routing Redundancy Protocol?
A network protocol that prevents disruptions in communication by automatically rerouting data traffic in case of path or device failure
This protocol is essential for maintaining connectivity in dynamic network environments.
What is the purpose of the First Hop Redundancy Protocol (FHRP)?
A group of protocols ensuring network reliability by providing automatic failover to a backup router if the primary router fails
FHRP is vital for maintaining network uptime.
List three benefits of FHRP.
- Reliability
- Load Balancing
- Seamless Transitions
These benefits enhance network performance and user experience.
What does the Reliability benefit of FHRP ensure?
Ensures communications remain up even if a router fails
This is crucial for businesses that rely on constant connectivity.
What is Load Balancing in the context of FHRP?
Distributes network traffic across multiple routers to prevent overload
This helps in optimizing resource utilization.
What does Seamless Transitions refer to in FHRP?
Makes quick and seamless transitions from sending data to one router to another
This minimizes disruption during router failover.
What is a Virtual IP in FHRP?
Represents one or more devices and is used as the default gateway for devices in the network
Virtual IPs simplify routing management.
What is a Subinterface?
Allows a single physical interface to be divided into multiple logical interfaces, improving network management and security
This aids in better organization of network traffic.
What is the Hot Standby Router Protocol (HSRP)?
Establishes a fault-tolerant default gateway for devices on a local network segment and enables two or more routers to work together
HSRP is crucial for ensuring continuous network service.
What are the roles of the Active router and Standby router in HSRP?
- Active router: Handles all the network’s routing responsibilities
- Standby router: Designed to wait to take over when the active router fails
This configuration ensures a backup is always ready to maintain connectivity.
What does Preempting allow in HSRP?
Allows a higher priority router to take over as the active router
This feature ensures that the most capable router manages the network traffic.
What is the Virtual Router Redundancy Protocol (VRRP)?
Functions similarly to HSRP but is an open standard not tied to a specific vendor
VRRP promotes interoperability between different hardware vendors.
What is the main function of VRRP?
Enables multiple routers to act as a single virtual router and provides a simple and automatic election scheme
This simplifies network design and increases reliability.
What does the Gateway Load Balancing Protocol (GLBP) add to FHRP?
Adds load balancing capabilities, allowing multiple routers to simultaneously forward packets to distribute traffic load
GLBP enhances network efficiency by optimizing resource usage.
How does GLBP assign virtual MAC addresses?
Assigns different virtual MAC addresses to each group member for load balancing
This approach facilitates traffic distribution across multiple routers.
What happens if a router fails in a GLBP group?
Automatically redirects traffic to other routers in the group if any fail
This ensures continued service even during hardware failures.
Why is routing redundancy important?
Critical for network designs to ensure continuous network availability, reliability, and efficiency
This is especially important as networks are relied upon for global communications and entertainment.
