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When you happen to be functioning on your BCMSN exam on your way to CCNP certification, you will read at length about how Cisco routers and multilayer switches can operate to present router redundancy - but there is one more valuable service, Server Load Balancing, that does the same for servers. Whereas HSRP, VRRP, and CLBP all represent various physical routers to hosts as a single virtual router, SLB represents many physical servers to hosts as a single virtual server. In the following example, 3 physical servers have been placed into the SRB group ServFarm. They're represented to the hosts as the virtual server 22.214.171.124. The hosts will seek to communicate with the server at 126.96.36.199, not understanding that they are truly communicating with the routers in ServFarm. This enables fast cutover if a single of the physical servers goes down, and also serves to hide the actual IP addresses of the servers in ServFarm. The fundamental operations of SLB entails building the server farm, followed by building the virtual server. We'll first add 188.8.131.52 to the server farm MLS(config)# ip slb serverfarm ServFarm MLS(config-slb-sfarm)# true 184.108.40.206 MLS(config-slb-genuine)# inservice The initially command creates the server farm, with the actual command specifying the IP address of the real server. The inservice command is expected by SLB to give consideration to the server as prepared to handle the server farm's workload. Learn new resources on our affiliated site by clicking http://markets.post-gazette.com/postgazette/news/read/30925912/mathfilefoldergames.com_hosts_virtual_math_summit. The actual and inservice commands will need to be repeated for each server in the server farm. To produce the virtual server MLS(config)# ip slb vserver VIRTUAL_SERVER MLS(config-slb-vserver)# serverfarm ServFarm MLS(config-slb-vserver)# virtual 220.127.116.11 MLS(config-slb-vserver)# inservice From the prime down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The virtual server is assigned the IP address 18.104.22.168, and connections are permitted after the inservice command is applied. You might also want to control which of your network hosts can connect to the virtual server. If hosts or subnets are named with the client command, those will be the only customers that can connect to the virtual server. Note that this command uses wildcard masks. I found out about http://www.wsav.com/story/30394774/mathfilefoldergamescom-hosts-virtual-math-summit by browsing webpages. If you have an opinion about operations, you will certainly require to compare about MathFileFolderGames.com Hosts Virtual Math Summit. The following configuration would allow only the hosts on the subnet 210.1.1. /24 to connect to the virtual server. MLS(config-slb-vserver)# client 210.1.1. ...255 SLB is the server end's answer to HSRP, VRRP, and GLBP - but you nevertheless will need to know it to come to be a CCNP Understanding redundancy methods and protocols is very important in today's networks, so make confident you're comfy with SLB prior to taking on the exam.. If you have an opinion about marketing, you will possibly desire to study about http://www.woio.com/story/30394774/mathfilefoldergamescom-hosts-virtual-math-summit.