## Load Balancing of Unequal Ethernet Bandwidth

5 pts.
Tags:
Bandwidth
Cisco
Cisco router configuration
Ethernet
Router configuration
Routers
Is it possible to aggregate and then load balance the unequal ethernet circuits like so: I have two ethenet circuits on my Cisco router. Both have equal costs to the next hop. Ethernet Circuit #1- 200M Ethernet Circuit #2 - 100M Can I aggregate both ethernet circuits so that the total amount of bandwidth available is 300M? Can I then load balance it so both circuits are equally utilized? For example... * If I have 150M of traffic flowing to the next hop then the router would spread the load across both links like so: 100M through Ethernet Circuit #1. 50M through Ethernet Circuit #2. * The formula to use for this would be: Utilization / Total Bandwidth = percentage of utilization required per link 150/300 = 0.5 0.5 x bandwidth of Ethernet #1 = 0.5 x 200 = 100M 0.5 x bandwidth of Ethernet #1 = 0.5 x 100 = 50M * If there was a total of 250M of traffic flowing to the next hop, and applying the formula above, the router would work out that the load distributed across both ethernet links would be: 166M through Ethernet Circuit #1. 84M through Ethernet Circuit #2. Any ideas??? Thanks. Andy