BROCADE IP PRIMER

PowerPower49F Link 50F49F Link 50FConsole1 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 48PowerPowerNETWORKS49F Link 50FConsoleFastIron Edge X4481 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 48NETWORKS49F Link 50FConsoleFastIron Edge X4481 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 48Chapter 8: Virtual Local Area Network (VLAN)In fact, if it helps, logically, it looks like this:5th Floor SwitchCFO4th Floor SwitchMarketingAccountingNow, the two-port trunk from the fourth floor to the fifth floor is actuallyshared, but it's shared privately. The VLAN 10 data never sees the VLAN 20data, and vice versa.The CEO comes back from his 15-week vacation in the Bahamas, and hedeclares, “I want the Accounting department and the Marketing department toshare information!” In other words, the executives have changed their mindabout what's required. How can we handle this? Well, we could put all themachines in the same VLAN. That would make an even bigger broadcastdomain. If either department were to grow, that would just make the problemworse. Plus, what if the executives decide next week that they don't want thetwo departments communicating to each other anymore?Let's take the design one step further. Let's say that not only are the Accountingand Marketing departments in different VLANs, they're in differentnetworks.184 Brocade IP Primer