BROCADE IP PRIMER

49FLinkPower50FConsole1 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 4849FLinkPower50FConsole1 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 4849FLinkPower50FConsole1 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 4849FLinkPower50F49FLinkPowerConsole50F49FLinkPower50FConsole1 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 48Console1 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 481 3 5 7 9 1113 15 17 19 21 2325 27 29 31 33 3537 39 41 43 45 471F 2F 3F 4F2 4 6 8 10 1214 16 18 20 22 2426 28 30 32 34 3638 40 42 44 46 48Link Aggregation (Trunks)7In Section I, I talked about a “single point of failure.” This is when one componentfailure causes the whole (or a large portion) of the infrastructure to fail.Let's start with an example:If this single link between the two switches were to fail, communicationbetween the two switches would cease.XOne way we can solve this problem is by defining an aggregate link or trunk. Atrunk is two or more links combined together to become one virtual link. Goingback to our example:The circle around the two links designates a trunk defined on both switches.With this in place, if one link goes down, the other will continue to pass traffic.Even better, while both links are active, traffic will pass through both links. Thisprovides greater bandwidth between the two switches.A trunk link load balances the traffic that goes through it. The method that ituses to load balance the traffic depends on the type of traffic, and what typeof trunk it is.In this chapter, we will talk about two different types of trunks: static anddynamic.Brocade IP Primer 159