This is the ability GLBP to place a weight on each device when calculating the amount of load sharing that will occur through MAC assignment. Each GLBP router in the group will advertise its weighting and assignment; the AVG will act based on that value. For example, if there are two routers in a group and router A has double the forwarding capacity of router B, the weighting value of router A should be configured to be double the amount of router B. Reference: https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ip- services/product_data_sheet0900aecd803a546c.html