CCNP Certification / BCMSN Examination Tutorial: Server Load Balancing (SLB)
If you’re engaged on your BCMSN Test on your strategy to CCNP certification, you’ll examine at size regarding how Cisco routers and multilayer switches can work to deliver router redundancy – but there’s An additional beneficial service, Server Load Balancing, that does the exact same for servers. Although HSRP, VRRP, and CLBP all depict numerous physical routers to hosts as only one Digital router, SLB represents a number of Actual physical servers to hosts as one virtual server.
In the next case in point, three physical servers have already been put into your SRB team ServFarm. They’re represented to your hosts as being the Digital server 210.one.one.fourteen.
The hosts will find to talk to the server at 210.1.one.fourteen, not realizing which they’re really speaking With all the routers in ServFarm. This permits speedy cutover if one of the Bodily servers goes down, as well as serves to cover the actual IP addresses of the servers in ServFarm.
The basic functions http://www.bbc.co.uk/search?q=먹튀검증 of SLB entails developing the server farm, followed by developing the Digital server. We’ll first include 210.one.1.eleven into the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# serious 210.one.1.11
MLS(config-slb-true)# inservice
The very first command makes the server farm, with 토토사이트 the real command specifying the IP address of the real server. The inservice command is required by SLB to consider the server as All set to deal with the server farm’s workload. The actual and inservice instructions must be repeated for every server from the server farm.
To produce the Digital server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# Digital 210.one.one.fourteen
MLS(config-slb-vserver)# inservice
Through the major down, the vserver was named VIRTUAL_SERVER, which signifies the server farm ServFarm. The virtual server is assigned the IP address 210.one.one.14, and connections are allowed once the inservice command is utilized.
You may also want to manage which of your respective network hosts can hook up with the Digital server. If hosts or subnets are named Together with the client command, People would be the only clientele which can connect to the Digital server. Notice that this command utilizes wildcard masks. The next configuration would permit just the hosts to the subnet 210.one.one.0 /24 to connect with the virtual server.
MLS(config-slb-vserver)# client 210.1.1.0 0.0.0.255
SLB will be the server finish’s solution to HSRP, VRRP, and GLBP – but you still should realize it to be a CCNP! Being aware of redundancy strategies and protocols is important in right now’s networks, so ensure that you’re comfy with SLB ahead of taking on the Test.