CCNP Certification / BCMSN Examination Tutorial: Server Load Balancing (SLB)
Whenever you’re working on your BCMSN exam on your own solution to CCNP certification, you’ll study at size regarding how Cisco routers and multilayer switches can do the job to supply router redundancy – but there’s A different beneficial assistance, Server Load Balancing, that does the same for servers. While HSRP, VRRP, and CLBP all stand for a number of Bodily routers to hosts as a single Digital router, SLB represents numerous Bodily servers to hosts as only one Digital server.
In the 먹튀검증 next instance, three physical servers happen to be placed to the SRB group ServFarm. They’re represented towards the hosts since the Digital server 210.one.one.14.
The hosts will search for to talk to the server at 210.one.one.14, not understanding which they’re in fact speaking with the routers in ServFarm. This permits quick cutover if among the Actual physical servers goes down, and in addition serves to hide the actual IP addresses with the servers in ServFarm.
The basic functions of SLB includes creating the server farm, followed by developing the Digital server. We’ll first include 210.1.one.11 to the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# real 210.one.1.11
MLS(config-slb-real)# inservice
The 1st command results in the server farm, with the real command specifying the IP tackle of the real server. The inservice command is necessary by SLB to think about the server as ready to deal with the server farm’s workload. The real and inservice instructions really should be recurring for each server while in the server farm.
To make the Digital server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# Digital 210.one.one.14
MLS(config-slb-vserver)# inservice
Within the major down, the vserver was named VIRTUAL_SERVER, which represents the server farm ServFarm. The virtual server is assigned the IP deal with 210.one.1.14, and connections are authorized after the inservice command is applied.
You might also want to regulate which of one's network hosts can connect with the Digital server. If hosts or subnets are named Together with the customer command, People would be the only clientele that could connect to the virtual server. Observe this command takes advantage of wildcard masks. The subsequent configuration would permit just the hosts on the subnet 210.1.one.0 /24 to hook up with the Digital server.
MLS(config-slb-vserver)# client 210.one.one.0 0.0.0.255
SLB is the server close’s solution to HSRP, VRRP, and GLBP – but you continue to should understand it to become a CCNP! Knowing redundancy tactics and protocols is vital in currently’s networks, so make sure you’re cozy with SLB just before taking on the Examination.