BROCADE IP PRIMER

NetScreen – 204POWERSTATUS-1ALARMHASE SIONBI4XGBI24CT X RX T X RX T X RX T X RXBI4XGBI24CT X RX T X RX T X RX T X RXBI24C6 12 18 2430 36 42 48BI24CBigIron RX-8NETWORKS1 7 13 1925 31 37 43BI24CBI24CBI24CBI24CFLASHCONSOLE MODEM COMPACT FLASH 1TX / RX LINKT X RX T X RX T X RX T X RXT X RX T X RX T X RX T X RXAC OK DC OK ALMEJECT SYS AC OK DC OK ALMEJECT SYS AC OK DC OK ALMEJECT SYS AC OK DC OK ALMBI4XGBI4XG10/1002TX /RX LINK10/100EJECT SYS3TX /RX LINK10/100ServerIron4TX /RX LINK10/100ServerIronNetScreen – 204BI4XGBI24CT X RX T X RX T X RX T X RXBI4XGBI24CT X RX T X RX T X RX T X RXBI24C6 12 18 2430 36 42 48BI24CBigIron RX-8NETWORKS1 7 13 1925 31 37 43BI24CBI24CBI24CBI24CPOWERALARMSTATUS-1SE SIONHAFLASHCONSOLE MODEM COMPACT FLASH 1TX / RX LINKT X RX T X RX T X RX T X RXT X RX T X RX T X RX T X RXAC OK DC OK ALMEJECT SYS AC OK DC OK ALMEJECT SYS AC OK DC OK ALMEJECT SYS AC OK DC OK ALMBI4XGBI4XGEJECT SYS10/1002TX /RX LINK10/1003TX /RX LINK10/1004TX /RX LINK10/100Chapter 17: Firewall Load Balancing (FWLB)bigger firewalls and replace the originals. Firewalls are expensive appliances.Besides it's theoretically possible that your needs may become so great thatnot even two of the most expensive firewalls will be enough. You need the abilityto expand your network to meet with the growing needs of yourinfrastructure.Now, you could buy two, three, or even four firewalls, but how do you directtraffic to use any of them? Could we use them all actively? Or would we have touse just one and wait for it to fail? This is where Firewall Load Balancing(FWLB) comes in. The ServerIron takes on the responsibility to route traffic intoand out of multiple firewalls. This allows for a near-infinitely expanding firewallinfrastructure. The ServerIron stackable and chassis models can load balanceup to 16 firewalls.Brocade offers two solutions for FWLB: basic and IronClad. The basic solutionprovides the ability to expand the firewall infrastructure, utilizing many firewalls,but it does not provide full redundancy. In this case, ServerIronsthemselves become single points of failure.Basic FWLBINTERNETFirewallFirewallThe solution? IronClad FWLB. This provides a scalable firewall infrastructureas well as redundancy.374 Brocade IP Primer