My CISCO Journal

I was working on an assignment involving GLBP implementation for Network Redundancy. I was totally un aware of this Protocol. Although i had some exposure to HSRP but was not aware of GLBP! This was totally an alien concept for me. Thankful to Mr Keith Barker! Who has made an outstanding video on Youtube, covering all the basics of GLBP and giving a detailed overview of its configurations. In this video Keith has covered almost all of the major components related to GLBP. A must watch video for a Network Engineer.







Quick Facts:

• GLBP uses 224.0.0.102 UDP/3222
• GLBP default Hello interval is 3 seconds
• GLBP has virtual MAC 0007.b4xx.xxyy with xx being group number and yy being forwarder number
• GLBP allows up to 4 virtual MAC address per group
• Elected Active Virtual Gateway (AVG) assigns/revokes virtual MAC to/from group members
• Each gateway is an Active Virtual Forwarder (AVF) and answers own ARP request