New Training: Describe High-Availability Techniques
| new skills - Team Nuggets

New Training: Describe High-Availability Techniques

In this 11-video skill, CBT Nuggets trainer Jeff Kish teaches you about high-availability techniques, such as HSRP, VRRP, GLBP, SSO, and NSF. Watch this new Cisco training.

Watch the full course: Cisco CCNP Enterprise Core

This training includes:

  • 11 videos
  • 1 hour of training

You’ll learn these topics in this skill:

  • Intro
  • First Hop Redundancy Protocols (FHRPs)
  • FHRPs in Action
  • FHRP Object Tracking
  • Hot Standby Router Protocol (HSRP)
  • Data Center HSRP
  • Virtual Router Redundancy Protocol (VRRP)
  • Gateway Load Balancing Protocol (GLBP)
  • FHRP Design
  • SSO and NSF
  • Review and Quiz

What is Gateway Load Balancing Protocol (GLBP)?

Gateway Load Balancing Protocol (GLBP) is a protocol created by Cisco for adding load balancing to routers through the use of multiple virtual MAC addresses. When using GLBP, one device within the group becomes the Active Virtual Gateway (AVG) and will assign virtual MAC addresses to the others in the group, which are called Active Virtual Forwarders (AVFs). Then, the AVG will respond to ARP (Address Resolution Protocol) requests with the virtual MAC address of one of the AVFs.

There are different methods that you can use for distributing traffic to the AVFs. You can use a round-robin approach, in which the AVG hands out AVFs in order and within a loop. You can also use a weighted approach, in which AVFs receive traffic based on their weight relative to others in the group. Finally, you can use a host-dependent approach, in which a host will always use the same AVF if it is available.

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